chrome/browser/ui/browser.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/browser.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #include <shellapi.h>
  10 #endif  // defined(OS_WIN)
  11
  12 #include <algorithm>
  13 #include <string>
  14
  15 #include "base/base_paths.h"
  16 #include "base/bind.h"
  17 #include "base/command_line.h"
  18 #include "base/location.h"
  19 #include "base/logging.h"
  20 #include "base/metrics/histogram.h"
  21 #include "base/prefs/pref_service.h"
  22 #include "base/process/process_info.h"
  23 #include "base/profiler/scoped_tracker.h"
  24 #include "base/single_thread_task_runner.h"
  25 #include "base/strings/string_number_conversions.h"
  26 #include "base/strings/string_util.h"
  27 #include "base/strings/stringprintf.h"
  28 #include "base/strings/utf_string_conversions.h"
  29 #include "base/thread_task_runner_handle.h"
  30 #include "base/threading/thread.h"
  31 #include "base/threading/thread_restrictions.h"
  32 #include "base/time/time.h"
  33 #include "chrome/app/chrome_command_ids.h"
  34 #include "chrome/browser/app_mode/app_mode_utils.h"
  35 #include "chrome/browser/autofill/personal_data_manager_factory.h"
  36 #include "chrome/browser/background/background_contents.h"
  37 #include "chrome/browser/background/background_contents_service.h"
  38 #include "chrome/browser/background/background_contents_service_factory.h"
  39 #include "chrome/browser/browser_process.h"
  40 #include "chrome/browser/browser_shutdown.h"
  41 #include "chrome/browser/character_encoding.h"
  42 #include "chrome/browser/chrome_notification_types.h"
  43 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  44 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  45 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  46 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  47 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  48 #include "chrome/browser/defaults.h"
  49 #include "chrome/browser/devtools/devtools_toggle_action.h"
  50 #include "chrome/browser/devtools/devtools_window.h"
  51 #include "chrome/browser/download/download_service.h"
  52 #include "chrome/browser/download/download_service_factory.h"
  53 #include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
  54 #include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
  55 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  56 #include "chrome/browser/extensions/extension_service.h"
  57 #include "chrome/browser/extensions/extension_ui_util.h"
  58 #include "chrome/browser/extensions/extension_util.h"
  59 #include "chrome/browser/extensions/tab_helper.h"
  60 #include "chrome/browser/file_select_helper.h"
  61 #include "chrome/browser/first_run/first_run.h"
  62 #include "chrome/browser/history/top_sites_factory.h"
  63 #include "chrome/browser/infobars/infobar_service.h"
  64 #include "chrome/browser/lifetime/application_lifetime.h"
  65 #include "chrome/browser/notifications/notification_ui_manager.h"
  66 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  67 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  68 #include "chrome/browser/profiles/profile.h"
  69 #include "chrome/browser/profiles/profile_destroyer.h"
  70 #include "chrome/browser/profiles/profile_metrics.h"
  71 #include "chrome/browser/profiles/profiles_state.h"
  72 #include "chrome/browser/repost_form_warning_controller.h"
  73 #include "chrome/browser/search/search.h"
  74 #include "chrome/browser/sessions/session_restore.h"
  75 #include "chrome/browser/sessions/session_service.h"
  76 #include "chrome/browser/sessions/session_service_factory.h"
  77 #include "chrome/browser/sessions/session_tab_helper.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/ssl/security_state_model.h"
  81 #include "chrome/browser/sync/profile_sync_service.h"
  82 #include "chrome/browser/sync/profile_sync_service_factory.h"
  83 #include "chrome/browser/sync/sync_ui_util.h"
  84 #include "chrome/browser/tab_contents/retargeting_details.h"
  85 #include "chrome/browser/tab_contents/tab_util.h"
  86 #include "chrome/browser/task_management/web_contents_tags.h"
  87 #include "chrome/browser/themes/theme_service.h"
  88 #include "chrome/browser/themes/theme_service_factory.h"
  89 #include "chrome/browser/translate/chrome_translate_client.h"
  90 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
  91 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  92 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  93 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  94 #include "chrome/browser/ui/browser_command_controller.h"
  95 #include "chrome/browser/ui/browser_commands.h"
  96 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  97 #include "chrome/browser/ui/browser_dialogs.h"
  98 #include "chrome/browser/ui/browser_finder.h"
  99 #include "chrome/browser/ui/browser_instant_controller.h"
 100 #include "chrome/browser/ui/browser_iterator.h"
 101 #include "chrome/browser/ui/browser_list.h"
 102 #include "chrome/browser/ui/browser_navigator.h"
 103 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 104 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 105 #include "chrome/browser/ui/browser_tabstrip.h"
 106 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 107 #include "chrome/browser/ui/browser_ui_prefs.h"
 108 #include "chrome/browser/ui/browser_window.h"
 109 #include "chrome/browser/ui/chrome_pages.h"
 110 #include "chrome/browser/ui/chrome_select_file_policy.h"
 111 #include "chrome/browser/ui/exclusive_access/fullscreen_controller.h"
 112 #include "chrome/browser/ui/exclusive_access/mouse_lock_controller.h"
 113 #include "chrome/browser/ui/extensions/hosted_app_browser_controller.h"
 114 #include "chrome/browser/ui/fast_unload_controller.h"
 115 #include "chrome/browser/ui/find_bar/find_bar.h"
 116 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 117 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 118 #include "chrome/browser/ui/global_error/global_error.h"
 119 #include "chrome/browser/ui/global_error/global_error_service.h"
 120 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 121 #include "chrome/browser/ui/location_bar/location_bar.h"
 122 #include "chrome/browser/ui/media_utils.h"
 123 #include "chrome/browser/ui/search/search_delegate.h"
 124 #include "chrome/browser/ui/search/search_model.h"
 125 #include "chrome/browser/ui/search/search_tab_helper.h"
 126 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 127 #include "chrome/browser/ui/settings_window_manager.h"
 128 #include "chrome/browser/ui/singleton_tabs.h"
 129 #include "chrome/browser/ui/status_bubble.h"
 130 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 131 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 132 #include "chrome/browser/ui/tab_dialogs.h"
 133 #include "chrome/browser/ui/tab_helpers.h"
 134 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 135 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 136 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 137 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 138 #include "chrome/browser/ui/tabs/tab_utils.h"
 139 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 140 #include "chrome/browser/ui/unload_controller.h"
 141 #include "chrome/browser/ui/validation_message_bubble.h"
 142 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 143 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 144 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 145 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 146 #include "chrome/browser/upgrade_detector.h"
 147 #include "chrome/common/chrome_constants.h"
 148 #include "chrome/common/chrome_switches.h"
 149 #include "chrome/common/custom_handlers/protocol_handler.h"
 150 #include "chrome/common/pref_names.h"
 151 #include "chrome/common/profiling.h"
 152 #include "chrome/common/search_types.h"
 153 #include "chrome/common/url_constants.h"
 154 #include "chrome/grit/chromium_strings.h"
 155 #include "chrome/grit/generated_resources.h"
 156 #include "chrome/grit/locale_settings.h"
 157 #include "components/app_modal/javascript_dialog_manager.h"
 158 #include "components/bookmarks/browser/bookmark_model.h"
 159 #include "components/bookmarks/browser/bookmark_utils.h"
 160 #include "components/content_settings/core/browser/host_content_settings_map.h"
 161 #include "components/favicon/content/content_favicon_driver.h"
 162 #include "components/history/core/browser/top_sites.h"
 163 #include "components/search/search.h"
 164 #include "components/sessions/session_types.h"
 165 #include "components/startup_metric_utils/startup_metric_utils.h"
 166 #include "components/translate/core/browser/language_state.h"
 167 #include "components/ui/zoom/zoom_controller.h"
 168 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 169 #include "content/public/browser/devtools_agent_host.h"
 170 #include "content/public/browser/interstitial_page.h"
 171 #include "content/public/browser/invalidate_type.h"
 172 #include "content/public/browser/navigation_controller.h"
 173 #include "content/public/browser/navigation_entry.h"
 174 #include "content/public/browser/notification_details.h"
 175 #include "content/public/browser/notification_service.h"
 176 #include "content/public/browser/plugin_service.h"
 177 #include "content/public/browser/render_process_host.h"
 178 #include "content/public/browser/render_view_host.h"
 179 #include "content/public/browser/render_widget_host_view.h"
 180 #include "content/public/browser/security_style_explanation.h"
 181 #include "content/public/browser/security_style_explanations.h"
 182 #include "content/public/browser/site_instance.h"
 183 #include "content/public/browser/user_metrics.h"
 184 #include "content/public/browser/web_contents.h"
 185 #include "content/public/common/content_switches.h"
 186 #include "content/public/common/page_zoom.h"
 187 #include "content/public/common/renderer_preferences.h"
 188 #include "content/public/common/ssl_status.h"
 189 #include "content/public/common/webplugininfo.h"
 190 #include "extensions/browser/extension_prefs.h"
 191 #include "extensions/browser/extension_registry.h"
 192 #include "extensions/browser/extension_system.h"
 193 #include "extensions/common/constants.h"
 194 #include "extensions/common/extension.h"
 195 #include "extensions/common/manifest_handlers/background_info.h"
 196 #include "net/base/filename_util.h"
 197 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 198 #include "net/cookies/cookie_monster.h"
 199 #include "net/url_request/url_request_context.h"
 200 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 201 #include "ui/base/l10n/l10n_util.h"
 202 #include "ui/base/window_open_disposition.h"
 203 #include "ui/gfx/geometry/point.h"
 204 #include "ui/shell_dialogs/selected_file_info.h"
 205
 206 #if defined(OS_WIN)
 207 #include "base/win/metro.h"
 208 #include "chrome/browser/ssl/ssl_error_info.h"
 209 #include "chrome/browser/task_manager/task_manager.h"
 210 #include "chrome/browser/ui/view_ids.h"
 211 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 212 #include "components/browser_watcher/exit_funnel_win.h"
 213 #include "ui/base/touch/touch_device.h"
 214 #include "ui/base/win/shell.h"
 215 #endif  // OS_WIN
 216
 217 #if defined(OS_CHROMEOS)
 218 #include "chrome/browser/chromeos/fileapi/external_file_url_util.h"
 219 #endif
 220
 221 #if defined(USE_ASH)
 222 #include "ash/ash_switches.h"
 223 #endif
 224
 225 using base::TimeDelta;
 226 using base::UserMetricsAction;
 227 using content::NativeWebKeyboardEvent;
 228 using content::NavigationController;
 229 using content::NavigationEntry;
 230 using content::OpenURLParams;
 231 using content::PluginService;
 232 using content::Referrer;
 233 using content::RenderWidgetHostView;
 234 using content::SiteInstance;
 235 using content::WebContents;
 236 using extensions::Extension;
 237 using ui::WebDialogDelegate;
 238 using web_modal::WebContentsModalDialogManager;
 239 using blink::WebWindowFeatures;
 240
 241 ///////////////////////////////////////////////////////////////////////////////
 242
 243 namespace {
 244
 245 // How long we wait before updating the browser chrome while loading a page.
 246 const int kUIUpdateCoalescingTimeMS = 200;
 247
 248 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 249   return BrowserWindow::CreateBrowserWindow(browser);
 250 }
 251
 252 // Is the fast tab unload experiment enabled?
 253 bool IsFastTabUnloadEnabled() {
 254   return base::CommandLine::ForCurrentProcess()->HasSwitch(
 255       switches::kEnableFastUnload);
 256 }
 257
 258 // Note: This is a lossy operation. Not all of the policies that can be
 259 // expressed by a SecurityLevel (a //chrome concept) can be expressed by
 260 // a content::SecurityStyle.
 261 content::SecurityStyle SecurityLevelToSecurityStyle(
 262     SecurityStateModel::SecurityLevel security_level) {
 263   switch (security_level) {
 264     case SecurityStateModel::NONE:
 265       return content::SECURITY_STYLE_UNAUTHENTICATED;
 266     case SecurityStateModel::SECURITY_WARNING:
 267     case SecurityStateModel::SECURITY_POLICY_WARNING:
 268       return content::SECURITY_STYLE_WARNING;
 269     case SecurityStateModel::EV_SECURE:
 270     case SecurityStateModel::SECURE:
 271       return content::SECURITY_STYLE_AUTHENTICATED;
 272     case SecurityStateModel::SECURITY_ERROR:
 273       return content::SECURITY_STYLE_AUTHENTICATION_BROKEN;
 274   }
 275
 276   NOTREACHED();
 277   return content::SECURITY_STYLE_UNKNOWN;
 278 }
 279
 280 }  // namespace
 281
 282 ////////////////////////////////////////////////////////////////////////////////
 283 // Browser, CreateParams:
 284
 285 Browser::CreateParams::CreateParams(Profile* profile,
 286                                     chrome::HostDesktopType host_desktop_type)
 287     : type(TYPE_TABBED),
 288       profile(profile),
 289       host_desktop_type(host_desktop_type),
 290       trusted_source(false),
 291       initial_show_state(ui::SHOW_STATE_DEFAULT),
 292       is_session_restore(false),
 293       window(NULL) {
 294 }
 295
 296 Browser::CreateParams::CreateParams(Type type,
 297                                     Profile* profile,
 298                                     chrome::HostDesktopType host_desktop_type)
 299     : type(type),
 300       profile(profile),
 301       host_desktop_type(host_desktop_type),
 302       trusted_source(false),
 303       initial_show_state(ui::SHOW_STATE_DEFAULT),
 304       is_session_restore(false),
 305       window(NULL) {
 306 }
 307
 308 // static
 309 Browser::CreateParams Browser::CreateParams::CreateForApp(
 310     const std::string& app_name,
 311     bool trusted_source,
 312     const gfx::Rect& window_bounds,
 313     Profile* profile,
 314     chrome::HostDesktopType host_desktop_type) {
 315   DCHECK(!app_name.empty());
 316
 317   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 318   params.app_name = app_name;
 319   params.trusted_source = trusted_source;
 320   params.initial_bounds = window_bounds;
 321
 322   return params;
 323 }
 324
 325 // static
 326 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 327     Profile* profile,
 328     chrome::HostDesktopType host_desktop_type) {
 329   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 330   params.app_name = DevToolsWindow::kDevToolsApp;
 331   params.trusted_source = true;
 332   return params;
 333 }
 334
 335 ////////////////////////////////////////////////////////////////////////////////
 336 // Browser, InterstitialObserver:
 337
 338 class Browser::InterstitialObserver : public content::WebContentsObserver {
 339  public:
 340   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 341       : WebContentsObserver(web_contents),
 342         browser_(browser) {
 343   }
 344
 345   void DidAttachInterstitialPage() override {
 346     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 347   }
 348
 349   void DidDetachInterstitialPage() override {
 350     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 351   }
 352
 353  private:
 354   Browser* browser_;
 355
 356   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 357 };
 358
 359 ///////////////////////////////////////////////////////////////////////////////
 360 // Browser, Constructors, Creation, Showing:
 361
 362 Browser::Browser(const CreateParams& params)
 363     : extension_registry_observer_(this),
 364       type_(params.type),
 365       profile_(params.profile),
 366       window_(NULL),
 367       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 368       tab_strip_model_(
 369           new TabStripModel(tab_strip_model_delegate_.get(), params.profile)),
 370       app_name_(params.app_name),
 371       is_trusted_source_(params.trusted_source),
 372       cancel_download_confirmation_state_(NOT_PROMPTED),
 373       override_bounds_(params.initial_bounds),
 374       initial_show_state_(params.initial_show_state),
 375       is_session_restore_(params.is_session_restore),
 376       host_desktop_type_(
 377           BrowserWindow::AdjustHostDesktopType(params.host_desktop_type)),
 378       content_setting_bubble_model_delegate_(
 379           new BrowserContentSettingBubbleModelDelegate(this)),
 380       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 381       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 382       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 383       bookmark_bar_state_(BookmarkBar::HIDDEN),
 384       command_controller_(new chrome::BrowserCommandController(this)),
 385       window_has_shown_(false),
 386       chrome_updater_factory_(this),
 387       weak_factory_(this) {
 388   // If this causes a crash then a window is being opened using a profile type
 389   // that is disallowed by policy. The crash prevents the disabled window type
 390   // from opening at all, but the path that triggered it should be fixed.
 391   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 392   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 393       << "Only off the record browser may be opened in guest mode";
 394   DCHECK(!profile_->IsSystemProfile())
 395       << "The system profile should never have a real browser.";
 396   // TODO(mlerman): After this hits stable channel, see if there are counts
 397   // for this metric. If not, change the DCHECK above to a CHECK.
 398   if (profile_->IsSystemProfile())
 399     content::RecordAction(base::UserMetricsAction("BrowserForSystemProfile"));
 400
 401   // TODO(jeremy): Move to initializer list once flag is removed.
 402   if (IsFastTabUnloadEnabled())
 403     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 404   else
 405     unload_controller_.reset(new chrome::UnloadController(this));
 406
 407   tab_strip_model_->AddObserver(this);
 408
 409   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 410   search_model_.reset(new SearchModel());
 411   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 412
 413   extension_registry_observer_.Add(
 414       extensions::ExtensionRegistry::Get(profile_));
 415   registrar_.Add(this,
 416                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 417                  content::NotificationService::AllSources());
 418 #if defined(ENABLE_THEMES)
 419   registrar_.Add(
 420       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 421       content::Source<ThemeService>(
 422           ThemeServiceFactory::GetForProfile(profile_)));
 423 #endif
 424   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 425                  content::NotificationService::AllSources());
 426
 427   profile_pref_registrar_.Init(profile_->GetPrefs());
 428   profile_pref_registrar_.Add(
 429       prefs::kDevToolsDisabled,
 430       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 431   profile_pref_registrar_.Add(
 432       bookmarks::prefs::kShowBookmarkBar,
 433       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 434                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 435
 436   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 437   // or you'll get a nasty surprise when you run the incognito tests.
 438   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 439                              profile_->GetPrefs());
 440
 441   if (search::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 442     instant_controller_.reset(new BrowserInstantController(this));
 443
 444   if (extensions::HostedAppBrowserController::IsForHostedApp(this)) {
 445     hosted_app_controller_.reset(
 446         new extensions::HostedAppBrowserController(this));
 447   }
 448
 449   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 450
 451   ProfileMetrics::LogProfileLaunch(profile_);
 452
 453   window_ = params.window ? params.window : CreateBrowserWindow(this);
 454
 455   if (hosted_app_controller_)
 456     hosted_app_controller_->UpdateLocationBarVisibility(false);
 457
 458   // Create the extension window controller before sending notifications.
 459   extension_window_controller_.reset(
 460       new BrowserExtensionWindowController(this));
 461
 462   SessionService* session_service =
 463       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 464   if (session_service)
 465     session_service->WindowOpened(this);
 466
 467   // TODO(beng): move to ChromeBrowserMain:
 468   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 469 #if defined(OS_WIN)
 470     // Notify PDM that this is a first run.
 471     ImportAutofillDataWin(
 472         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 473 #endif  // defined(OS_WIN)
 474   }
 475
 476   exclusive_access_manager_.reset(
 477       new ExclusiveAccessManager(window_->GetExclusiveAccessContext()));
 478
 479   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 480   //             replace uses of this with BL's notifications.
 481   BrowserList::AddBrowser(this);
 482   content::NotificationService::current()->Notify(
 483       chrome::NOTIFICATION_BROWSER_WINDOW_READY, content::Source<Browser>(this),
 484       content::NotificationService::NoDetails());
 485 }
 486
 487 Browser::~Browser() {
 488   // Stop observing notifications before continuing with destruction. Profile
 489   // destruction will unload extensions and reentrant calls to Browser:: should
 490   // be avoided while it is being torn down.
 491   registrar_.RemoveAll();
 492   extension_registry_observer_.RemoveAll();
 493
 494   // The tab strip should not have any tabs at this point.
 495   DCHECK(tab_strip_model_->empty());
 496   tab_strip_model_->RemoveObserver(this);
 497   bubble_manager_.reset();
 498
 499   // Destroy the BrowserCommandController before removing the browser, so that
 500   // it doesn't act on any notifications that are sent as a result of removing
 501   // the browser.
 502   command_controller_.reset();
 503   BrowserList::RemoveBrowser(this);
 504
 505   SessionService* session_service =
 506       SessionServiceFactory::GetForProfile(profile_);
 507   if (session_service)
 508     session_service->WindowClosed(session_id_);
 509
 510   TabRestoreService* tab_restore_service =
 511       TabRestoreServiceFactory::GetForProfile(profile());
 512   if (tab_restore_service)
 513     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 514
 515 #if !defined(OS_MACOSX)
 516   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 517     // We're the last browser window with this profile. We need to nuke the
 518     // TabRestoreService, which will start the shutdown of the
 519     // NavigationControllers and allow for proper shutdown. If we don't do this
 520     // chrome won't shutdown cleanly, and may end up crashing when some
 521     // thread tries to use the IO thread (or another thread) that is no longer
 522     // valid.
 523     // This isn't a valid assumption for Mac OS, as it stays running after
 524     // the last browser has closed. The Mac equivalent is in its app
 525     // controller.
 526     TabRestoreServiceFactory::ResetForProfile(profile_);
 527   }
 528 #endif
 529
 530   profile_pref_registrar_.RemoveAll();
 531
 532   encoding_auto_detect_.Destroy();
 533
 534   // Destroy BrowserExtensionWindowController before the incognito profile
 535   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 536   extension_window_controller_.reset();
 537
 538   // Destroy BrowserInstantController before the incongnito profile is destroyed
 539   // because the InstantController destructor depends on this profile.
 540   instant_controller_.reset();
 541
 542   if (profile_->IsOffTheRecord() &&
 543       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 544     if (profile_->IsGuestSession()) {
 545 // ChromeOS handles guest data independently.
 546 #if !defined(OS_CHROMEOS)
 547       // Clear all browsing data once a Guest Session completes. The Guest
 548       // profile has BrowserContextKeyedServices that the Incognito profile
 549       // doesn't, so the ProfileDestroyer can't delete it properly.
 550       // TODO(mlerman): Delete the guest using an improved ProfileDestroyer.
 551       profiles::RemoveBrowsingDataForProfile(profile_->GetPath());
 552 #endif
 553     } else {
 554       // An incognito profile is no longer needed, this indirectly frees
 555       // its cache and cookies once it gets destroyed at the appropriate time.
 556       ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 557     }
 558   }
 559
 560   // There may be pending file dialogs, we need to tell them that we've gone
 561   // away so they don't try and call back to us.
 562   if (select_file_dialog_.get())
 563     select_file_dialog_->ListenerDestroyed();
 564
 565   int num_downloads;
 566   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 567           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 568       !browser_defaults::kBrowserAliveWithNoWindows) {
 569     DownloadService::CancelAllDownloads();
 570   }
 571 }
 572
 573 ///////////////////////////////////////////////////////////////////////////////
 574 // Getters & Setters
 575
 576 ChromeBubbleManager* Browser::GetBubbleManager() {
 577   if (!bubble_manager_)
 578     bubble_manager_.reset(new ChromeBubbleManager(tab_strip_model_.get()));
 579   return bubble_manager_.get();
 580 }
 581
 582 FindBarController* Browser::GetFindBarController() {
 583   if (!find_bar_controller_.get()) {
 584     FindBar* find_bar = window_->CreateFindBar();
 585     find_bar_controller_.reset(new FindBarController(find_bar));
 586     find_bar->SetFindBarController(find_bar_controller_.get());
 587     find_bar_controller_->ChangeWebContents(
 588         tab_strip_model_->GetActiveWebContents());
 589     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
 590   }
 591   return find_bar_controller_.get();
 592 }
 593
 594 bool Browser::HasFindBarController() const {
 595   return find_bar_controller_.get() != NULL;
 596 }
 597
 598 bool Browser::is_app() const {
 599   return !app_name_.empty();
 600 }
 601
 602 bool Browser::is_devtools() const {
 603   return app_name_ == DevToolsWindow::kDevToolsApp;
 604 }
 605
 606 ///////////////////////////////////////////////////////////////////////////////
 607 // Browser, State Storage and Retrieval for UI:
 608
 609 gfx::Image Browser::GetCurrentPageIcon() const {
 610   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 611   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 612   // window during the window's creation (before tabs have been added).
 613   favicon::FaviconDriver* favicon_driver =
 614       web_contents
 615           ? favicon::ContentFaviconDriver::FromWebContents(web_contents)
 616           : nullptr;
 617   return favicon_driver ? favicon_driver->GetFavicon() : gfx::Image();
 618 }
 619
 620 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 621   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 622   base::string16 title;
 623
 624   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 625   // window during the window's creation (before tabs have been added).
 626   if (contents) {
 627     // The web app frame uses the host instead of the title.
 628     if (ShouldUseWebAppFrame())
 629       return base::UTF8ToUTF16(contents->GetURL().host());
 630
 631     title = contents->GetTitle();
 632     FormatTitleForDisplay(&title);
 633   }
 634   if (title.empty())
 635     title = CoreTabHelper::GetDefaultTitle();
 636
 637 #if defined(OS_MACOSX)
 638   // On Mac, we don't want to suffix the page title with
 639   // the application name.
 640   return title;
 641 #elif defined(USE_ASH)
 642   // On Ash, we don't want to suffix the page title with the application name,
 643   // but on Windows, where USE_ASH can also be true, we still want the prefix
 644   // on desktop.
 645   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 646     return title;
 647 #endif
 648   // Don't append the app name to window titles on app frames and app popups
 649   return is_app() ?
 650       title :
 651       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 652 }
 653
 654 // static
 655 void Browser::FormatTitleForDisplay(base::string16* title) {
 656   size_t current_index = 0;
 657   size_t match_index;
 658   while ((match_index = title->find(L'\n', current_index)) !=
 659          base::string16::npos) {
 660     title->replace(match_index, 1, base::string16());
 661     current_index = match_index;
 662   }
 663 }
 664
 665 ///////////////////////////////////////////////////////////////////////////////
 666 // Browser, OnBeforeUnload handling:
 667
 668 bool Browser::ShouldCloseWindow() {
 669   if (!CanCloseWithInProgressDownloads())
 670     return false;
 671
 672   if (IsFastTabUnloadEnabled())
 673     return fast_unload_controller_->ShouldCloseWindow();
 674   return unload_controller_->ShouldCloseWindow();
 675 }
 676
 677 bool Browser::CallBeforeUnloadHandlers(
 678     const base::Callback<void(bool)>& on_close_confirmed) {
 679   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 680   if (IsFastTabUnloadEnabled()) {
 681     return fast_unload_controller_->CallBeforeUnloadHandlers(
 682         on_close_confirmed);
 683   }
 684   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 685 }
 686
 687 void Browser::ResetBeforeUnloadHandlers() {
 688   cancel_download_confirmation_state_ = NOT_PROMPTED;
 689   if (IsFastTabUnloadEnabled())
 690     fast_unload_controller_->ResetBeforeUnloadHandlers();
 691   else
 692     unload_controller_->ResetBeforeUnloadHandlers();
 693 }
 694
 695 bool Browser::HasCompletedUnloadProcessing() const {
 696   DCHECK(IsFastTabUnloadEnabled());
 697   return fast_unload_controller_->HasCompletedUnloadProcessing();
 698 }
 699
 700 bool Browser::IsAttemptingToCloseBrowser() const {
 701   if (IsFastTabUnloadEnabled())
 702     return fast_unload_controller_->is_attempting_to_close_browser();
 703   return unload_controller_->is_attempting_to_close_browser();
 704 }
 705
 706 void Browser::OnWindowClosing() {
 707   if (!ShouldCloseWindow())
 708     return;
 709
 710   // Application should shutdown on last window close if the user is explicitly
 711   // trying to quit, or if there is nothing keeping the browser alive (such as
 712   // AppController on the Mac, or BackgroundContentsService for background
 713   // pages).
 714   bool should_quit_if_last_browser =
 715       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 716
 717   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this)) {
 718 #if defined(OS_WIN)
 719     browser_watcher::ExitFunnel::RecordSingleEvent(
 720           chrome::kBrowserExitCodesRegistryPath, L"LastWindowClose");
 721 #endif
 722     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 723   }
 724
 725   // Don't use GetForProfileIfExisting here, we want to force creation of the
 726   // session service so that user can restore what was open.
 727   SessionService* session_service =
 728       SessionServiceFactory::GetForProfile(profile());
 729   if (session_service)
 730     session_service->WindowClosing(session_id());
 731
 732   TabRestoreService* tab_restore_service =
 733       TabRestoreServiceFactory::GetForProfile(profile());
 734
 735 #if defined(USE_AURA)
 736   if (tab_restore_service && is_app() && !is_devtools())
 737     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 738 #endif
 739
 740   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 741     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 742
 743   // TODO(sky): convert session/tab restore to use notification.
 744   content::NotificationService::current()->Notify(
 745       chrome::NOTIFICATION_BROWSER_CLOSING,
 746       content::Source<Browser>(this),
 747       content::NotificationService::NoDetails());
 748
 749   if (!IsFastTabUnloadEnabled())
 750     tab_strip_model_->CloseAllTabs();
 751 }
 752
 753 ////////////////////////////////////////////////////////////////////////////////
 754 // In-progress download termination handling:
 755
 756 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 757   if (cancel_downloads) {
 758     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 759     chrome::CloseWindow(this);
 760     return;
 761   }
 762
 763   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 764   // close again we'll show the warning again.
 765   cancel_download_confirmation_state_ = NOT_PROMPTED;
 766
 767   // Show the download page so the user can figure-out what downloads are still
 768   // in-progress.
 769   chrome::ShowDownloads(this);
 770
 771   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 772   // prompt every time any tab is closed. http://crbug.com/305516
 773   if (IsFastTabUnloadEnabled())
 774     fast_unload_controller_->CancelWindowClose();
 775   else
 776     unload_controller_->CancelWindowClose();
 777 }
 778
 779 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 780     int* num_downloads_blocking) const {
 781   DCHECK(num_downloads_blocking);
 782   *num_downloads_blocking = 0;
 783
 784   // If we're not running a full browser process with a profile manager
 785   // (testing), it's ok to close the browser.
 786   if (!g_browser_process->profile_manager())
 787     return DOWNLOAD_CLOSE_OK;
 788
 789   int total_download_count =
 790       DownloadService::NonMaliciousDownloadCountAllProfiles();
 791   if (total_download_count == 0)
 792     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 793
 794   // Figure out how many windows are open total, and associated with this
 795   // profile, that are relevant for the ok-to-close decision.
 796   int profile_window_count = 0;
 797   int total_window_count = 0;
 798   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 799     // Don't count this browser window or any other in the process of closing.
 800     Browser* const browser = *it;
 801     // Window closing may be delayed, and windows that are in the process of
 802     // closing don't count against our totals.
 803     if (browser == this || browser->IsAttemptingToCloseBrowser())
 804       continue;
 805
 806     if (it->profile() == profile())
 807       profile_window_count++;
 808     total_window_count++;
 809   }
 810
 811   // If there aren't any other windows, we're at browser shutdown,
 812   // which would cancel all current downloads.
 813   if (total_window_count == 0) {
 814     *num_downloads_blocking = total_download_count;
 815     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 816   }
 817
 818   // If there aren't any other windows on our profile, and we're an incognito
 819   // profile, and there are downloads associated with that profile,
 820   // those downloads would be cancelled by our window (-> profile) close.
 821   DownloadService* download_service =
 822       DownloadServiceFactory::GetForBrowserContext(profile());
 823   if ((profile_window_count == 0) &&
 824       (download_service->NonMaliciousDownloadCount() > 0) &&
 825       profile()->IsOffTheRecord()) {
 826     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 827     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 828   }
 829
 830   // Those are the only conditions under which we will block shutdown.
 831   return DOWNLOAD_CLOSE_OK;
 832 }
 833
 834 ////////////////////////////////////////////////////////////////////////////////
 835 // Browser, Tab adding/showing functions:
 836
 837 void Browser::WindowFullscreenStateChanged() {
 838   exclusive_access_manager_->fullscreen_controller()
 839       ->WindowFullscreenStateChanged();
 840   command_controller_->FullscreenStateChanged();
 841   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 842 }
 843
 844 ///////////////////////////////////////////////////////////////////////////////
 845 // Browser, Assorted browser commands:
 846
 847 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 848   exclusive_access_manager_->fullscreen_controller()
 849       ->ToggleBrowserFullscreenModeWithExtension(extension_url);
 850 }
 851
 852 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 853   return SupportsWindowFeatureImpl(feature, true);
 854 }
 855
 856 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 857   return SupportsWindowFeatureImpl(feature, false);
 858 }
 859
 860 void Browser::ToggleEncodingAutoDetect() {
 861   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 862   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 863   // If "auto detect" is turned on, then any current override encoding
 864   // is cleared. This also implicitly performs a reload.
 865   // OTOH, if "auto detect" is turned off, we don't change the currently
 866   // active encoding.
 867   if (encoding_auto_detect_.GetValue()) {
 868     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 869     if (contents)
 870       contents->ResetOverrideEncoding();
 871   }
 872 }
 873
 874 void Browser::OverrideEncoding(int encoding_id) {
 875   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 876   const std::string selected_encoding =
 877       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 878   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 879   if (!selected_encoding.empty() && contents)
 880      contents->SetOverrideEncoding(selected_encoding);
 881   // Update the list of recently selected encodings.
 882   std::string new_selected_encoding_list;
 883   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 884         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 885         encoding_id,
 886         &new_selected_encoding_list)) {
 887     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 888                                     new_selected_encoding_list);
 889   }
 890 }
 891
 892 void Browser::OpenFile() {
 893   content::RecordAction(UserMetricsAction("OpenFile"));
 894   select_file_dialog_ = ui::SelectFileDialog::Create(
 895       this, new ChromeSelectFilePolicy(
 896           tab_strip_model_->GetActiveWebContents()));
 897
 898   const base::FilePath directory = profile_->last_selected_directory();
 899
 900   // TODO(beng): figure out how to juggle this.
 901   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 902   ui::SelectFileDialog::FileTypeInfo file_types;
 903   file_types.support_drive = true;
 904   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 905                                   base::string16(),
 906                                   directory,
 907                                   &file_types,
 908                                   0,
 909                                   base::FilePath::StringType(),
 910                                   parent_window,
 911                                   NULL);
 912 }
 913
 914 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 915   if (GetStatusBubble())
 916     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 917 }
 918
 919 ///////////////////////////////////////////////////////////////////////////////
 920
 921 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 922                                          ui::PageTransition transition,
 923                                          bool user_initiated) {
 924   tab_strip_model_->TabNavigating(contents, transition);
 925
 926   bool contents_is_selected =
 927       contents == tab_strip_model_->GetActiveWebContents();
 928   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 929     // Forcibly reset the location bar if the url is going to change in the
 930     // current tab, since otherwise it won't discard any ongoing user edits,
 931     // since it doesn't realize this is a user-initiated action.
 932     window()->GetLocationBar()->Revert();
 933   }
 934
 935   if (GetStatusBubble())
 936     GetStatusBubble()->Hide();
 937
 938   // Update the location bar. This is synchronous. We specifically don't
 939   // update the load state since the load hasn't started yet and updating it
 940   // will put it out of sync with the actual state like whether we're
 941   // displaying a favicon, which controls the throbber. If we updated it here,
 942   // the throbber will show the default favicon for a split second when
 943   // navigating away from the new tab page.
 944   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 945
 946   if (contents_is_selected)
 947     contents->SetInitialFocus();
 948 }
 949
 950 ///////////////////////////////////////////////////////////////////////////////
 951 // Browser, PageNavigator implementation:
 952
 953 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 954   return OpenURLFromTab(NULL, params);
 955 }
 956
 957 ///////////////////////////////////////////////////////////////////////////////
 958 // Browser, TabStripModelObserver implementation:
 959
 960 void Browser::TabInsertedAt(WebContents* contents,
 961                             int index,
 962                             bool foreground) {
 963   SetAsDelegate(contents, true);
 964
 965   SessionTabHelper* session_tab_helper =
 966       SessionTabHelper::FromWebContents(contents);
 967   session_tab_helper->SetWindowID(session_id());
 968
 969   content::NotificationService::current()->Notify(
 970       chrome::NOTIFICATION_TAB_PARENTED,
 971       content::Source<content::WebContents>(contents),
 972       content::NotificationService::NoDetails());
 973
 974   SyncHistoryWithTabs(index);
 975
 976   // Make sure the loading state is updated correctly, otherwise the throbber
 977   // won't start if the page is loading.
 978   LoadingStateChanged(contents, true);
 979
 980   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 981
 982   SessionService* session_service =
 983       SessionServiceFactory::GetForProfile(profile_);
 984   if (session_service) {
 985     session_service->TabInserted(contents);
 986     int new_active_index = tab_strip_model_->active_index();
 987     if (index < new_active_index)
 988       session_service->SetSelectedTabInWindow(session_id(),
 989                                               new_active_index);
 990   }
 991 }
 992
 993 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 994                            WebContents* contents,
 995                            int index) {
 996   exclusive_access_manager_->OnTabClosing(contents);
 997   SessionService* session_service =
 998       SessionServiceFactory::GetForProfile(profile_);
 999   if (session_service)
1000     session_service->TabClosing(contents);
1001   content::NotificationService::current()->Notify(
1002       chrome::NOTIFICATION_TAB_CLOSING,
1003       content::Source<NavigationController>(&contents->GetController()),
1004       content::NotificationService::NoDetails());
1005
1006   // Sever the WebContents' connection back to us.
1007   SetAsDelegate(contents, false);
1008 }
1009
1010 void Browser::TabDetachedAt(WebContents* contents, int index) {
1011   // TabDetachedAt is called before TabStripModel has updated the
1012   // active index.
1013   int old_active_index = tab_strip_model_->active_index();
1014   if (index < old_active_index && !tab_strip_model_->closing_all()) {
1015     SessionService* session_service =
1016         SessionServiceFactory::GetForProfileIfExisting(profile_);
1017     if (session_service)
1018       session_service->SetSelectedTabInWindow(session_id(),
1019                                               old_active_index - 1);
1020   }
1021
1022   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1023 }
1024
1025 void Browser::TabDeactivated(WebContents* contents) {
1026   exclusive_access_manager_->OnTabDeactivated(contents);
1027   search_delegate_->OnTabDeactivated(contents);
1028   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
1029
1030   // Save what the user's currently typing, so it can be restored when we
1031   // switch back to this tab.
1032   window_->GetLocationBar()->SaveStateToContents(contents);
1033
1034   if (instant_controller_)
1035     instant_controller_->TabDeactivated(contents);
1036 }
1037
1038 void Browser::ActiveTabChanged(WebContents* old_contents,
1039                                WebContents* new_contents,
1040                                int index,
1041                                int reason) {
1042   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1043
1044   // Update the bookmark state, since the BrowserWindow may query it during
1045   // OnActiveTabChanged() below.
1046   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1047
1048   // Let the BrowserWindow do its handling.  On e.g. views this changes the
1049   // focused object, which should happen before we update the toolbar below,
1050   // since the omnibox expects the correct element to already be focused when it
1051   // is updated.
1052   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1053
1054   exclusive_access_manager_->OnTabDetachedFromView(old_contents);
1055
1056   // Discarded tabs always get reloaded.
1057   if (tab_strip_model_->IsTabDiscarded(index)) {
1058     LOG(WARNING) << "Reloading discarded tab at " << index;
1059     static int reload_count = 0;
1060     UMA_HISTOGRAM_CUSTOM_COUNTS(
1061         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1062     chrome::Reload(this, CURRENT_TAB);
1063   }
1064
1065   // If we have any update pending, do it now.
1066   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1067     ProcessPendingUIUpdates();
1068
1069   // Propagate the profile to the location bar.
1070   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1071
1072   if (search::IsInstantExtendedAPIEnabled())
1073     search_delegate_->OnTabActivated(new_contents);
1074
1075   // Update reload/stop state.
1076   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1077
1078   // Update commands to reflect current state.
1079   command_controller_->TabStateChanged();
1080
1081   // Reset the status bubble.
1082   StatusBubble* status_bubble = GetStatusBubble();
1083   if (status_bubble) {
1084     status_bubble->Hide();
1085
1086     // Show the loading state (if any).
1087     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1088         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1089   }
1090
1091   if (HasFindBarController()) {
1092     find_bar_controller_->ChangeWebContents(new_contents);
1093     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
1094   }
1095
1096   // Update sessions (selected tab index and last active time). Don't force
1097   // creation of sessions. If sessions doesn't exist, the change will be picked
1098   // up by sessions when created.
1099   SessionService* session_service =
1100       SessionServiceFactory::GetForProfileIfExisting(profile_);
1101   if (session_service && !tab_strip_model_->closing_all()) {
1102     session_service->SetSelectedTabInWindow(session_id(),
1103                                             tab_strip_model_->active_index());
1104     if (SessionRestore::GetSmartRestoreMode() ==
1105         SessionRestore::SMART_RESTORE_MODE_MRU) {
1106       SessionTabHelper* session_tab_helper =
1107           SessionTabHelper::FromWebContents(new_contents);
1108       session_service->SetLastActiveTime(session_id(),
1109                                          session_tab_helper->session_id(),
1110                                          base::TimeTicks::Now());
1111     }
1112   }
1113
1114   // This needs to be called after notifying SearchDelegate.
1115   if (instant_controller_)
1116     instant_controller_->ActiveTabChanged();
1117
1118   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1119   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1120 }
1121
1122 void Browser::TabMoved(WebContents* contents,
1123                        int from_index,
1124                        int to_index) {
1125   DCHECK(from_index >= 0 && to_index >= 0);
1126   // Notify the history service.
1127   SyncHistoryWithTabs(std::min(from_index, to_index));
1128 }
1129
1130 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1131                             WebContents* old_contents,
1132                             WebContents* new_contents,
1133                             int index) {
1134   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1135   exclusive_access_manager_->OnTabClosing(old_contents);
1136   SessionService* session_service =
1137       SessionServiceFactory::GetForProfile(profile_);
1138   if (session_service)
1139     session_service->TabClosing(old_contents);
1140   TabInsertedAt(new_contents,
1141                 index,
1142                 (index == tab_strip_model_->active_index()));
1143
1144   int entry_count = new_contents->GetController().GetEntryCount();
1145   if (entry_count > 0) {
1146     // Send out notification so that observers are updated appropriately.
1147     new_contents->GetController().NotifyEntryChanged(
1148         new_contents->GetController().GetEntryAtIndex(entry_count - 1));
1149   }
1150
1151   if (session_service) {
1152     // The new_contents may end up with a different navigation stack. Force
1153     // the session service to update itself.
1154     session_service->TabRestored(new_contents,
1155                                  tab_strip_model_->IsTabPinned(index));
1156   }
1157 }
1158
1159 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1160   SessionService* session_service =
1161       SessionServiceFactory::GetForProfileIfExisting(profile());
1162   if (session_service) {
1163     SessionTabHelper* session_tab_helper =
1164         SessionTabHelper::FromWebContents(contents);
1165     session_service->SetPinnedState(session_id(),
1166                                     session_tab_helper->session_id(),
1167                                     tab_strip_model_->IsTabPinned(index));
1168   }
1169 }
1170
1171 void Browser::TabStripEmpty() {
1172   // Close the frame after we return to the message loop (not immediately,
1173   // otherwise it will destroy this object before the stack has a chance to
1174   // cleanly unwind.)
1175   // Note: This will be called several times if TabStripEmpty is called several
1176   //       times. This is because it does not close the window if tabs are
1177   //       still present.
1178   base::ThreadTaskRunnerHandle::Get()->PostTask(
1179       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1180
1181   // Instant may have visible WebContents that need to be detached before the
1182   // window system closes.
1183   instant_controller_.reset();
1184 }
1185
1186 bool Browser::CanOverscrollContent() const {
1187 #if defined(OS_WIN)
1188   // Don't enable overscroll on Windows machines unless they have a touch
1189   // screen as these machines typically don't have a touchpad capable of
1190   // horizontal scrolling. We are purposefully biased towards "no" here,
1191   // so that we don't waste resources capturing screenshots for horizontal
1192   // overscroll navigation unnecessarily.
1193   bool allow_overscroll = ui::IsTouchDevicePresent();
1194 #elif defined(USE_AURA)
1195   bool allow_overscroll = true;
1196 #else
1197   bool allow_overscroll = false;
1198 #endif
1199
1200   if (!allow_overscroll)
1201     return false;
1202
1203   const std::string value =
1204       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
1205           switches::kOverscrollHistoryNavigation);
1206   bool overscroll_enabled = value != "0";
1207   if (!overscroll_enabled)
1208     return false;
1209   if (is_app() || is_devtools() || !is_type_tabbed())
1210     return false;
1211
1212   // The detached bookmark bar has appearance of floating above the
1213   // web-contents. This does not play nicely with overscroll navigation
1214   // gestures. So disable overscroll navigation when the bookmark bar is in the
1215   // detached state and the overscroll effect moves the layers.
1216   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1217     return false;
1218   return true;
1219 }
1220
1221 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1222   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1223   // other pages have committed.
1224   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1225   if (!profile || !source->GetController().GetLastCommittedEntry())
1226     return false;
1227   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1228   return search::IsNTPURL(committed_url, profile);
1229 }
1230
1231 void Browser::SetFocusToLocationBar(bool select_all) {
1232   // Two differences between this and FocusLocationBar():
1233   // (1) This doesn't get recorded in user metrics, since it's called
1234   //     internally.
1235   // (2) This checks whether the location bar can be focused, and if not, clears
1236   //     the focus.  FocusLocationBar() is only reached when the location bar is
1237   //     focusable, but this may be reached at other times, e.g. while in
1238   //     fullscreen mode, where we need to leave focus in a consistent state.
1239   window_->SetFocusToLocationBar(select_all);
1240 }
1241
1242 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1243                                      const NativeWebKeyboardEvent& event,
1244                                      bool* is_keyboard_shortcut) {
1245   // Escape exits tabbed fullscreen mode and mouse lock, and possibly others.
1246   // TODO(koz): Write a test for this http://crbug.com/100441.
1247   if (event.windowsKeyCode == 27 &&
1248       exclusive_access_manager_->HandleUserPressedEscape()) {
1249     return true;
1250   }
1251   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1252 }
1253
1254 void Browser::HandleKeyboardEvent(content::WebContents* source,
1255                                   const NativeWebKeyboardEvent& event) {
1256   DevToolsWindow* devtools_window =
1257       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1258   bool handled = false;
1259   if (devtools_window)
1260     handled = devtools_window->ForwardKeyboardEvent(event);
1261
1262   if (!handled)
1263     window()->HandleKeyboardEvent(event);
1264 }
1265
1266 bool Browser::TabsNeedBeforeUnloadFired() {
1267   if (IsFastTabUnloadEnabled())
1268     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1269   return unload_controller_->TabsNeedBeforeUnloadFired();
1270 }
1271
1272 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1273                                     const gfx::Rect& anchor_in_root_view,
1274                                     const base::string16& main_text,
1275                                     const base::string16& sub_text) {
1276   validation_message_bubble_ =
1277       TabDialogs::FromWebContents(web_contents)
1278           ->ShowValidationMessage(anchor_in_root_view, main_text, sub_text);
1279 }
1280
1281 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1282   validation_message_bubble_.reset();
1283 }
1284
1285 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1286                                     const gfx::Rect& anchor_in_root_view) {
1287   if (!validation_message_bubble_)
1288     return;
1289   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1290   if (rwhv) {
1291     validation_message_bubble_->SetPositionRelativeToAnchor(
1292         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1293   }
1294 }
1295
1296 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1297                                     const blink::WebGestureEvent& event) {
1298   // Disable pinch zooming in undocked dev tools window due to poor UX.
1299   if (app_name() == DevToolsWindow::kDevToolsApp)
1300     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1301            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1302            event.type == blink::WebGestureEvent::GesturePinchEnd;
1303
1304   return false;
1305 }
1306
1307 bool Browser::CanDragEnter(content::WebContents* source,
1308                            const content::DropData& data,
1309                            blink::WebDragOperationsMask operations_allowed) {
1310   // Disallow drag-and-drop navigation for Settings windows which do not support
1311   // external navigation.
1312   if ((operations_allowed & blink::WebDragOperationLink) &&
1313       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1314     return false;
1315   }
1316   return true;
1317 }
1318
1319 content::SecurityStyle Browser::GetSecurityStyle(
1320     WebContents* web_contents,
1321     content::SecurityStyleExplanations* security_style_explanations) {
1322   SecurityStateModel* model = SecurityStateModel::FromWebContents(web_contents);
1323   DCHECK(model);
1324   const SecurityStateModel::SecurityInfo& security_info =
1325       model->security_info();
1326
1327   const content::SecurityStyle security_style =
1328       SecurityLevelToSecurityStyle(security_info.security_level);
1329
1330   security_style_explanations->ran_insecure_content_style =
1331       SecurityStateModel::kRanInsecureContentStyle;
1332   security_style_explanations->displayed_insecure_content_style =
1333       SecurityStateModel::kDisplayedInsecureContentStyle;
1334
1335   // Check if the page is HTTP; if so, no explanations are needed. Note
1336   // that SECURITY_STYLE_UNAUTHENTICATED does not necessarily mean that
1337   // the page is loaded over HTTP, because the security style merely
1338   // represents how the embedder wishes to display the security state of
1339   // the page, and the embedder can choose to display HTTPS page as HTTP
1340   // if it wants to (for example, displaying deprecated crypto
1341   // algorithms with the same UI treatment as HTTP pages).
1342   security_style_explanations->scheme_is_cryptographic =
1343       security_info.scheme_is_cryptographic;
1344   if (!security_info.scheme_is_cryptographic) {
1345     return security_style;
1346   }
1347
1348   if (security_info.sha1_deprecation_status ==
1349       SecurityStateModel::DEPRECATED_SHA1_BROKEN) {
1350     security_style_explanations->broken_explanations.push_back(
1351         content::SecurityStyleExplanation(
1352             l10n_util::GetStringUTF8(IDS_BROKEN_SHA1),
1353             l10n_util::GetStringUTF8(IDS_BROKEN_SHA1_DESCRIPTION),
1354             security_info.cert_id));
1355   } else if (security_info.sha1_deprecation_status ==
1356              SecurityStateModel::DEPRECATED_SHA1_WARNING) {
1357     security_style_explanations->warning_explanations.push_back(
1358         content::SecurityStyleExplanation(
1359             l10n_util::GetStringUTF8(IDS_WARNING_SHA1),
1360             l10n_util::GetStringUTF8(IDS_WARNING_SHA1_DESCRIPTION),
1361             security_info.cert_id));
1362   }
1363
1364   security_style_explanations->ran_insecure_content =
1365       security_info.mixed_content_status ==
1366           SecurityStateModel::RAN_MIXED_CONTENT ||
1367       security_info.mixed_content_status ==
1368           SecurityStateModel::RAN_AND_DISPLAYED_MIXED_CONTENT;
1369   security_style_explanations->displayed_insecure_content =
1370       security_info.mixed_content_status ==
1371           SecurityStateModel::DISPLAYED_MIXED_CONTENT ||
1372       security_info.mixed_content_status ==
1373           SecurityStateModel::RAN_AND_DISPLAYED_MIXED_CONTENT;
1374
1375   if (net::IsCertStatusError(security_info.cert_status)) {
1376     base::string16 error_string = base::UTF8ToUTF16(net::ErrorToString(
1377         net::MapCertStatusToNetError(security_info.cert_status)));
1378
1379     content::SecurityStyleExplanation explanation(
1380         l10n_util::GetStringUTF8(IDS_CERTIFICATE_CHAIN_ERROR),
1381         l10n_util::GetStringFUTF8(
1382             IDS_CERTIFICATE_CHAIN_ERROR_DESCRIPTION_FORMAT, error_string),
1383         security_info.cert_id);
1384
1385     if (net::IsCertStatusMinorError(security_info.cert_status))
1386       security_style_explanations->warning_explanations.push_back(explanation);
1387     else
1388       security_style_explanations->broken_explanations.push_back(explanation);
1389   } else {
1390     // If the certificate does not have errors and is not using
1391     // deprecated SHA1, then add an explanation that the certificate is
1392     // valid.
1393     if (security_info.sha1_deprecation_status ==
1394         SecurityStateModel::NO_DEPRECATED_SHA1) {
1395       security_style_explanations->secure_explanations.push_back(
1396           content::SecurityStyleExplanation(
1397               l10n_util::GetStringUTF8(IDS_VALID_SERVER_CERTIFICATE),
1398               l10n_util::GetStringUTF8(
1399                   IDS_VALID_SERVER_CERTIFICATE_DESCRIPTION),
1400               security_info.cert_id));
1401     }
1402   }
1403
1404   return security_style;
1405 }
1406
1407 void Browser::ShowCertificateViewerInDevTools(
1408     content::WebContents* web_contents, int cert_id) {
1409   DevToolsWindow* devtools_window =
1410       DevToolsWindow::GetInstanceForInspectedWebContents(web_contents);
1411   if (devtools_window)
1412     devtools_window->ShowCertificateViewer(cert_id);
1413 }
1414
1415 bool Browser::IsMouseLocked() const {
1416   return exclusive_access_manager_->mouse_lock_controller()->IsMouseLocked();
1417 }
1418
1419 void Browser::OnWindowDidShow() {
1420   if (window_has_shown_)
1421     return;
1422   window_has_shown_ = true;
1423
1424   startup_metric_utils::RecordBrowserWindowDisplay(base::Time::Now());
1425
1426   // Nothing to do for non-tabbed windows.
1427   if (!is_type_tabbed())
1428     return;
1429
1430   // Show any pending global error bubble.
1431   GlobalErrorService* service =
1432       GlobalErrorServiceFactory::GetForProfile(profile());
1433   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1434   if (error)
1435     error->ShowBubbleView(this);
1436 }
1437
1438 void Browser::ShowFirstRunBubble() {
1439   window()->GetLocationBar()->ShowFirstRunBubble();
1440 }
1441
1442 ///////////////////////////////////////////////////////////////////////////////
1443 // Browser, content::WebContentsDelegate implementation:
1444
1445 WebContents* Browser::OpenURLFromTab(WebContents* source,
1446                                      const OpenURLParams& params) {
1447   if (is_devtools()) {
1448     DevToolsWindow* window = DevToolsWindow::AsDevToolsWindow(source);
1449     DCHECK(window);
1450     return window->OpenURLFromTab(source, params);
1451   }
1452
1453   chrome::NavigateParams nav_params(this, params.url, params.transition);
1454   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1455   nav_params.source_contents = source;
1456   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1457   if (params.user_gesture)
1458     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1459   nav_params.user_gesture = params.user_gesture;
1460
1461   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1462   if (source)
1463     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1464
1465   if (popup_blocker_helper) {
1466     if ((params.disposition == NEW_POPUP ||
1467          params.disposition == NEW_FOREGROUND_TAB ||
1468          params.disposition == NEW_BACKGROUND_TAB ||
1469          params.disposition == NEW_WINDOW) &&
1470         !params.user_gesture &&
1471         !base::CommandLine::ForCurrentProcess()->HasSwitch(
1472             switches::kDisablePopupBlocking)) {
1473       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1474                                                 WebWindowFeatures())) {
1475         return NULL;
1476       }
1477     }
1478   }
1479
1480   chrome::Navigate(&nav_params);
1481
1482   return nav_params.target_contents;
1483 }
1484
1485 void Browser::NavigationStateChanged(WebContents* source,
1486                                      content::InvalidateTypes changed_flags) {
1487   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1488   // is fixed.
1489   tracked_objects::ScopedTracker tracking_profile1(
1490       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1491           "466285 Browser::NavigationStateChanged::ScheduleUIUpdate"));
1492   // Only update the UI when something visible has changed.
1493   if (changed_flags)
1494     ScheduleUIUpdate(source, changed_flags);
1495
1496   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1497   // is fixed.
1498   tracked_objects::ScopedTracker tracking_profile2(
1499       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1500           "466285 Browser::NavigationStateChanged::TabStateChanged"));
1501   // We can synchronously update commands since they will only change once per
1502   // navigation, so we don't have to worry about flickering. We do, however,
1503   // need to update the command state early on load to always present usable
1504   // actions in the face of slow-to-commit pages.
1505   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1506                        content::INVALIDATE_TYPE_LOAD))
1507     command_controller_->TabStateChanged();
1508
1509   if (hosted_app_controller_)
1510     hosted_app_controller_->UpdateLocationBarVisibility(true);
1511 }
1512
1513 void Browser::VisibleSSLStateChanged(WebContents* source) {
1514   // When the current tab's SSL state changes, we need to update the URL
1515   // bar to reflect the new state.
1516   DCHECK(source);
1517
1518   // Notify the model that the security state has changed, so that the
1519   // URL bar updates with up-to-date data computed by the model.
1520   SecurityStateModel* model = SecurityStateModel::FromWebContents(source);
1521   DCHECK(model);
1522   model->SecurityStateChanged();
1523
1524   if (tab_strip_model_->GetActiveWebContents() == source)
1525     UpdateToolbar(false);
1526 }
1527
1528 void Browser::AddNewContents(WebContents* source,
1529                              WebContents* new_contents,
1530                              WindowOpenDisposition disposition,
1531                              const gfx::Rect& initial_rect,
1532                              bool user_gesture,
1533                              bool* was_blocked) {
1534   chrome::AddWebContents(this, source, new_contents, disposition, initial_rect,
1535                          user_gesture, was_blocked);
1536 }
1537
1538 void Browser::ActivateContents(WebContents* contents) {
1539   tab_strip_model_->ActivateTabAt(
1540       tab_strip_model_->GetIndexOfWebContents(contents), false);
1541   window_->Activate();
1542 }
1543
1544 void Browser::DeactivateContents(WebContents* contents) {
1545   window_->Deactivate();
1546 }
1547
1548 void Browser::LoadingStateChanged(WebContents* source,
1549     bool to_different_document) {
1550   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1551   window_->UpdateTitleBar();
1552
1553   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1554   if (source == selected_contents) {
1555     bool is_loading = source->IsLoading() && to_different_document;
1556     command_controller_->LoadingStateChanged(is_loading, false);
1557     if (GetStatusBubble()) {
1558       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1559           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1560     }
1561   }
1562 }
1563
1564 void Browser::CloseContents(WebContents* source) {
1565   bool can_close_contents;
1566   if (IsFastTabUnloadEnabled())
1567     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1568   else
1569     can_close_contents = unload_controller_->CanCloseContents(source);
1570
1571   if (can_close_contents)
1572     chrome::CloseWebContents(this, source, true);
1573 }
1574
1575 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1576   if (!IsPopupOrPanel(source)) {
1577     NOTREACHED() << "moving invalid browser type";
1578     return;
1579   }
1580   window_->SetBounds(pos);
1581 }
1582
1583 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1584   return is_type_popup();
1585 }
1586
1587 void Browser::UpdateTargetURL(WebContents* source, const GURL& url) {
1588   if (!GetStatusBubble())
1589     return;
1590
1591   if (source == tab_strip_model_->GetActiveWebContents()) {
1592     PrefService* prefs = profile_->GetPrefs();
1593     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1594   }
1595 }
1596
1597 void Browser::ContentsMouseEvent(
1598     WebContents* source, const gfx::Point& location, bool motion) {
1599   if (!GetStatusBubble())
1600     return;
1601
1602   if (source == tab_strip_model_->GetActiveWebContents()) {
1603     GetStatusBubble()->MouseMoved(location, !motion);
1604     if (!motion)
1605       GetStatusBubble()->SetURL(GURL(), std::string());
1606   }
1607 }
1608
1609 void Browser::ContentsZoomChange(bool zoom_in) {
1610   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1611 }
1612
1613 bool Browser::TakeFocus(content::WebContents* source,
1614                         bool reverse) {
1615   content::NotificationService::current()->Notify(
1616       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1617       content::Source<Browser>(this),
1618       content::NotificationService::NoDetails());
1619   return false;
1620 }
1621
1622 gfx::Rect Browser::GetRootWindowResizerRect() const {
1623   return window_->GetRootWindowResizerRect();
1624 }
1625
1626 void Browser::BeforeUnloadFired(WebContents* web_contents,
1627                                 bool proceed,
1628                                 bool* proceed_to_fire_unload) {
1629   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1630         proceed, proceed_to_fire_unload))
1631     return;
1632
1633   if (IsFastTabUnloadEnabled()) {
1634     *proceed_to_fire_unload =
1635         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1636   } else {
1637     *proceed_to_fire_unload =
1638         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1639   }
1640 }
1641
1642 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1643   const content::NavigationEntry* entry =
1644       source->GetController().GetActiveEntry();
1645   if (entry) {
1646     GURL url = entry->GetURL();
1647     GURL virtual_url = entry->GetVirtualURL();
1648     if ((url.SchemeIs(content::kChromeUIScheme) &&
1649         url.host() == chrome::kChromeUINewTabHost) ||
1650         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1651         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1652       return true;
1653     }
1654   }
1655
1656   return search::NavEntryIsInstantNTP(source, entry);
1657 }
1658
1659 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1660   DCHECK(source);
1661   chrome::ViewSource(this, source);
1662 }
1663
1664 void Browser::ViewSourceForFrame(WebContents* source,
1665                                  const GURL& frame_url,
1666                                  const content::PageState& frame_page_state) {
1667   DCHECK(source);
1668   chrome::ViewSource(this, source, frame_url, frame_page_state);
1669 }
1670
1671 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1672   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1673                                 source);
1674 }
1675
1676 bool Browser::ShouldCreateWebContents(
1677     WebContents* web_contents,
1678     int route_id,
1679     int main_frame_route_id,
1680     WindowContainerType window_container_type,
1681     const std::string& frame_name,
1682     const GURL& target_url,
1683     const std::string& partition_id,
1684     content::SessionStorageNamespace* session_storage_namespace) {
1685   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1686     // If a BackgroundContents is created, suppress the normal WebContents.
1687     return !MaybeCreateBackgroundContents(route_id,
1688                                           main_frame_route_id,
1689                                           web_contents,
1690                                           frame_name,
1691                                           target_url,
1692                                           partition_id,
1693                                           session_storage_namespace);
1694   }
1695
1696   return true;
1697 }
1698
1699 void Browser::WebContentsCreated(WebContents* source_contents,
1700                                  int opener_render_frame_id,
1701                                  const std::string& frame_name,
1702                                  const GURL& target_url,
1703                                  WebContents* new_contents) {
1704   // Adopt the WebContents now, so all observers are in place, as the network
1705   // requests for its initial navigation will start immediately. The WebContents
1706   // will later be inserted into this browser using Browser::Navigate via
1707   // AddNewContents.
1708   TabHelpers::AttachTabHelpers(new_contents);
1709
1710   // Make the tab show up in the task manager.
1711   task_management::WebContentsTags::CreateForTabContents(new_contents);
1712
1713   // Notify.
1714   RetargetingDetails details;
1715   details.source_web_contents = source_contents;
1716   details.source_render_frame_id = opener_render_frame_id;
1717   details.target_url = target_url;
1718   details.target_web_contents = new_contents;
1719   details.not_yet_in_tabstrip = true;
1720   content::NotificationService::current()->Notify(
1721       chrome::NOTIFICATION_RETARGETING,
1722       content::Source<Profile>(profile_),
1723       content::Details<RetargetingDetails>(&details));
1724 }
1725
1726 void Browser::RendererUnresponsive(WebContents* source) {
1727   // Ignore hangs if a tab is blocked.
1728   int index = tab_strip_model_->GetIndexOfWebContents(source);
1729   DCHECK_NE(TabStripModel::kNoTab, index);
1730   if (tab_strip_model_->IsTabBlocked(index))
1731     return;
1732
1733   TabDialogs::FromWebContents(source)->ShowHungRendererDialog();
1734 }
1735
1736 void Browser::RendererResponsive(WebContents* source) {
1737   TabDialogs::FromWebContents(source)->HideHungRendererDialog();
1738 }
1739
1740 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1741   if (web_contents == tab_strip_model_->GetActiveWebContents())
1742     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1743 }
1744
1745 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager(
1746     WebContents* source) {
1747   return app_modal::JavaScriptDialogManager::GetInstance();
1748 }
1749
1750 content::ColorChooser* Browser::OpenColorChooser(
1751       WebContents* web_contents,
1752       SkColor initial_color,
1753       const std::vector<content::ColorSuggestion>& suggestions) {
1754   return chrome::ShowColorChooser(web_contents, initial_color);
1755 }
1756
1757 void Browser::RunFileChooser(WebContents* web_contents,
1758                              const content::FileChooserParams& params) {
1759   FileSelectHelper::RunFileChooser(web_contents, params);
1760 }
1761
1762 void Browser::EnumerateDirectory(WebContents* web_contents,
1763                                  int request_id,
1764                                  const base::FilePath& path) {
1765   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1766 }
1767
1768 bool Browser::EmbedsFullscreenWidget() const {
1769   return true;
1770 }
1771
1772 void Browser::EnterFullscreenModeForTab(WebContents* web_contents,
1773                                         const GURL& origin) {
1774   exclusive_access_manager_->fullscreen_controller()->EnterFullscreenModeForTab(
1775       web_contents, origin);
1776 }
1777
1778 void Browser::ExitFullscreenModeForTab(WebContents* web_contents) {
1779   exclusive_access_manager_->fullscreen_controller()->ExitFullscreenModeForTab(
1780       web_contents);
1781 }
1782
1783 bool Browser::IsFullscreenForTabOrPending(
1784     const WebContents* web_contents) const {
1785   return exclusive_access_manager_->fullscreen_controller()
1786       ->IsFullscreenForTabOrPending(web_contents);
1787 }
1788
1789 blink::WebDisplayMode Browser::GetDisplayMode(
1790     const WebContents* web_contents) const {
1791   if (window_->IsFullscreen())
1792     return blink::WebDisplayModeFullscreen;
1793
1794   if (is_type_popup())
1795     return blink::WebDisplayModeStandalone;
1796
1797   return blink::WebDisplayModeBrowser;
1798 }
1799
1800 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1801                                       const std::string& protocol,
1802                                       const GURL& url,
1803                                       bool user_gesture) {
1804   content::BrowserContext* context = web_contents->GetBrowserContext();
1805   if (context->IsOffTheRecord())
1806     return;
1807
1808   ProtocolHandler handler =
1809       ProtocolHandler::CreateProtocolHandler(protocol, url);
1810
1811   ProtocolHandlerRegistry* registry =
1812       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1813   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1814     return;
1815
1816   TabSpecificContentSettings* tab_content_settings =
1817       TabSpecificContentSettings::FromWebContents(web_contents);
1818   if (!user_gesture && window_) {
1819     tab_content_settings->set_pending_protocol_handler(handler);
1820     tab_content_settings->set_previous_protocol_handler(
1821         registry->GetHandlerFor(handler.protocol()));
1822     window_->GetLocationBar()->UpdateContentSettingsIcons();
1823     return;
1824   }
1825
1826   // Make sure content-setting icon is turned off in case the page does
1827   // ungestured and gestured RPH calls.
1828   if (window_) {
1829     tab_content_settings->ClearPendingProtocolHandler();
1830     window_->GetLocationBar()->UpdateContentSettingsIcons();
1831   }
1832
1833   PermissionBubbleManager* bubble_manager =
1834       PermissionBubbleManager::FromWebContents(web_contents);
1835   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1836     bubble_manager->AddRequest(
1837         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1838                                                      url, user_gesture));
1839   } else {
1840     RegisterProtocolHandlerInfoBarDelegate::Create(
1841         InfoBarService::FromWebContents(web_contents), registry, handler);
1842   }
1843 }
1844
1845 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1846                                         const std::string& protocol,
1847                                         const GURL& url,
1848                                         bool user_gesture) {
1849   // user_gesture will be used in case we decide to have confirmation bubble
1850   // for user while un-registering the handler.
1851   content::BrowserContext* context = web_contents->GetBrowserContext();
1852   if (context->IsOffTheRecord())
1853     return;
1854
1855   ProtocolHandler handler =
1856       ProtocolHandler::CreateProtocolHandler(protocol, url);
1857
1858   ProtocolHandlerRegistry* registry =
1859       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1860   registry->RemoveHandler(handler);
1861 }
1862
1863 void Browser::UpdatePreferredSize(WebContents* source,
1864                                   const gfx::Size& pref_size) {
1865   window_->UpdatePreferredSize(source, pref_size);
1866 }
1867
1868 void Browser::ResizeDueToAutoResize(WebContents* source,
1869                                     const gfx::Size& new_size) {
1870   window_->ResizeDueToAutoResize(source, new_size);
1871 }
1872
1873 void Browser::FindReply(WebContents* web_contents,
1874                         int request_id,
1875                         int number_of_matches,
1876                         const gfx::Rect& selection_rect,
1877                         int active_match_ordinal,
1878                         bool final_update) {
1879   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1880   if (!find_tab_helper)
1881     return;
1882
1883   find_tab_helper->HandleFindReply(request_id,
1884                                    number_of_matches,
1885                                    selection_rect,
1886                                    active_match_ordinal,
1887                                    final_update);
1888 }
1889
1890 void Browser::RequestToLockMouse(WebContents* web_contents,
1891                                  bool user_gesture,
1892                                  bool last_unlocked_by_target) {
1893   exclusive_access_manager_->mouse_lock_controller()->RequestToLockMouse(
1894       web_contents, user_gesture, last_unlocked_by_target);
1895 }
1896
1897 void Browser::LostMouseLock() {
1898   exclusive_access_manager_->mouse_lock_controller()->LostMouseLock();
1899 }
1900
1901 void Browser::RequestMediaAccessPermission(
1902     content::WebContents* web_contents,
1903     const content::MediaStreamRequest& request,
1904     const content::MediaResponseCallback& callback) {
1905   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1906 }
1907
1908 bool Browser::CheckMediaAccessPermission(content::WebContents* web_contents,
1909                                          const GURL& security_origin,
1910                                          content::MediaStreamType type) {
1911   return ::CheckMediaAccessPermission(web_contents, security_origin, type);
1912 }
1913
1914 bool Browser::RequestPpapiBrokerPermission(
1915     WebContents* web_contents,
1916     const GURL& url,
1917     const base::FilePath& plugin_path,
1918     const base::Callback<void(bool)>& callback) {
1919   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1920   return true;
1921 }
1922
1923 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1924   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1925   // would disappear on non-NTP pages, resulting in a bigger size for the new
1926   // render view.
1927   gfx::Size size = web_contents->GetContainerBounds().size();
1928   // Don't change render view size if bookmark bar is currently not detached,
1929   // or there's no pending entry, or navigating to a NTP page.
1930   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1931     return size;
1932   const NavigationEntry* pending_entry =
1933       web_contents->GetController().GetPendingEntry();
1934   if (pending_entry &&
1935       !search::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1936     size.Enlarge(
1937         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1938   }
1939   return size;
1940 }
1941
1942 ///////////////////////////////////////////////////////////////////////////////
1943 // Browser, CoreTabHelperDelegate implementation:
1944
1945 void Browser::SwapTabContents(content::WebContents* old_contents,
1946                               content::WebContents* new_contents,
1947                               bool did_start_load,
1948                               bool did_finish_load) {
1949   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1950   DCHECK_NE(TabStripModel::kNoTab, index);
1951   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1952 }
1953
1954 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1955   return chrome::CanReload(this);
1956 }
1957
1958 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1959   return chrome::CanSavePage(this);
1960 }
1961
1962 ///////////////////////////////////////////////////////////////////////////////
1963 // Browser, SearchEngineTabHelperDelegate implementation:
1964
1965 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1966                                        Profile* profile) {
1967   window()->ConfirmAddSearchProvider(template_url, profile);
1968 }
1969
1970 ///////////////////////////////////////////////////////////////////////////////
1971 // Browser, SearchTabHelperDelegate implementation:
1972
1973 void Browser::NavigateOnThumbnailClick(const GURL& url,
1974                                        WindowOpenDisposition disposition,
1975                                        content::WebContents* source_contents) {
1976   DCHECK(source_contents);
1977   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1978   // gets called to handle clicks in the new tab page (to navigate to most
1979   // visited item URLs) and in the search results page (to navigate to
1980   // privileged destinations (e.g. chrome://URLs)).
1981   //
1982   // TODO(kmadhusu): Page transitions to privileged destinations should be
1983   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1984   chrome::NavigateParams params(this, url,
1985                                 ui::PAGE_TRANSITION_AUTO_BOOKMARK);
1986   params.referrer = content::Referrer();
1987   params.source_contents = source_contents;
1988   params.disposition = disposition;
1989   params.is_renderer_initiated = false;
1990   params.initiating_profile = profile_;
1991   chrome::Navigate(&params);
1992 }
1993
1994 void Browser::OnWebContentsInstantSupportDisabled(
1995     const content::WebContents* web_contents) {
1996   DCHECK(web_contents);
1997   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1998     UpdateToolbar(false);
1999 }
2000
2001 OmniboxView* Browser::GetOmniboxView() {
2002   return window_->GetLocationBar()->GetOmniboxView();
2003 }
2004
2005 std::set<std::string> Browser::GetOpenUrls() {
2006   scoped_refptr<history::TopSites> top_sites =
2007       TopSitesFactory::GetForProfile(profile_);
2008   if (!top_sites)  // NULL for Incognito profiles.
2009     return std::set<std::string>();
2010
2011   std::set<std::string> open_urls;
2012   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
2013   return open_urls;
2014 }
2015
2016 ///////////////////////////////////////////////////////////////////////////////
2017 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
2018
2019 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
2020                                     bool blocked) {
2021   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
2022   if (index == TabStripModel::kNoTab) {
2023     NOTREACHED();
2024     return;
2025   }
2026   tab_strip_model_->SetTabBlocked(index, blocked);
2027   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
2028     web_contents->Focus();
2029 }
2030
2031 web_modal::WebContentsModalDialogHost*
2032 Browser::GetWebContentsModalDialogHost() {
2033   return window_->GetWebContentsModalDialogHost();
2034 }
2035
2036 ///////////////////////////////////////////////////////////////////////////////
2037 // Browser, BookmarkTabHelperDelegate implementation:
2038
2039 void Browser::URLStarredChanged(content::WebContents* web_contents,
2040                                 bool starred) {
2041   if (web_contents == tab_strip_model_->GetActiveWebContents())
2042     window_->SetStarredState(starred);
2043 }
2044
2045 ///////////////////////////////////////////////////////////////////////////////
2046 // Browser, ZoomObserver implementation:
2047
2048 void Browser::OnZoomChanged(
2049     const ui_zoom::ZoomController::ZoomChangedEventData& data) {
2050   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
2051     window_->ZoomChangedForActiveTab(data.can_show_bubble);
2052     // Change the zoom commands state based on the zoom state
2053     command_controller_->ZoomStateChanged();
2054   }
2055 }
2056
2057 ///////////////////////////////////////////////////////////////////////////////
2058 // Browser, ui::SelectFileDialog::Listener implementation:
2059
2060 void Browser::FileSelected(const base::FilePath& path, int index,
2061                            void* params) {
2062   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
2063 }
2064
2065 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
2066                                         int index,
2067                                         void* params) {
2068   profile_->set_last_selected_directory(file_info.file_path.DirName());
2069
2070   GURL url = net::FilePathToFileURL(file_info.local_path);
2071
2072 #if defined(OS_CHROMEOS)
2073   const GURL external_url =
2074       chromeos::CreateExternalFileURLFromPath(profile_, file_info.file_path);
2075   if (!external_url.is_empty())
2076     url = external_url;
2077 #endif
2078
2079   if (url.is_empty())
2080     return;
2081
2082   OpenURL(OpenURLParams(
2083       url, Referrer(), CURRENT_TAB, ui::PAGE_TRANSITION_TYPED, false));
2084 }
2085
2086 ///////////////////////////////////////////////////////////////////////////////
2087 // Browser, content::NotificationObserver implementation:
2088
2089 void Browser::Observe(int type,
2090                       const content::NotificationSource& source,
2091                       const content::NotificationDetails& details) {
2092   switch (type) {
2093     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
2094       Profile* profile = content::Source<Profile>(source).ptr();
2095       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
2096         window()->GetLocationBar()->UpdatePageActions();
2097       break;
2098     }
2099
2100 #if defined(ENABLE_THEMES)
2101     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
2102       window()->UserChangedTheme();
2103       break;
2104 #endif
2105
2106     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
2107       WebContents* web_contents = content::Source<WebContents>(source).ptr();
2108       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
2109         LocationBar* location_bar = window()->GetLocationBar();
2110         if (location_bar)
2111           location_bar->UpdateContentSettingsIcons();
2112       }
2113       break;
2114     }
2115
2116     default:
2117       NOTREACHED() << "Got a notification we didn't register for.";
2118   }
2119 }
2120
2121 #if defined(ENABLE_EXTENSIONS)
2122 ///////////////////////////////////////////////////////////////////////////////
2123 // Browser, extensions::ExtensionRegistryObserver implementation:
2124
2125 void Browser::OnExtensionUninstalled(content::BrowserContext* browser_context,
2126                                      const extensions::Extension* extension,
2127                                      extensions::UninstallReason reason) {
2128   // During window creation on Windows we may end up calling into
2129   // SHAppBarMessage, which internally spawns a nested message loop.This
2130   // makes it possible for us to end up here before window creation has
2131   // completed, at which point window_ is NULL. See 94752 for details.
2132
2133   if (window() && window()->GetLocationBar())
2134     window()->GetLocationBar()->UpdatePageActions();
2135 }
2136
2137 void Browser::OnExtensionLoaded(content::BrowserContext* browser_context,
2138                                 const extensions::Extension* extension) {
2139   command_controller_->ExtensionStateChanged();
2140 }
2141
2142 void Browser::OnExtensionUnloaded(
2143     content::BrowserContext* browser_context,
2144     const extensions::Extension* extension,
2145     extensions::UnloadedExtensionInfo::Reason reason) {
2146   command_controller_->ExtensionStateChanged();
2147   if (window()->GetLocationBar())
2148     window()->GetLocationBar()->UpdatePageActions();
2149
2150   // Close any tabs from the unloaded extension, unless it's terminated,
2151   // in which case let the sad tabs remain.
2152   // Also, if tab is muted and the cause is the unloaded extension, unmute it.
2153   if (reason != extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
2154     // Iterate backwards as we may remove items while iterating.
2155     for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
2156       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2157       // Two cases are handled here:
2158
2159       // - The scheme check is for when an extension page is loaded in a
2160       // tab, e.g. chrome-extension://id/page.html.
2161       // - The extension_app check is for apps, which can have non-extension
2162       // schemes, e.g. https://mail.google.com if you have the Gmail app
2163       // installed.
2164       if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
2165            web_contents->GetURL().host() == extension->id()) ||
2166           (extensions::TabHelper::FromWebContents(web_contents)
2167                ->extension_app() == extension)) {
2168         tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
2169       } else {
2170         chrome::UnmuteIfMutedByExtension(web_contents, extension->id());
2171       }
2172     }
2173   }
2174 }
2175 #endif  // defined(ENABLE_EXTENSIONS)
2176
2177 ///////////////////////////////////////////////////////////////////////////////
2178 // Browser, translate::ContentTranslateDriver::Observer implementation:
2179
2180 void Browser::OnIsPageTranslatedChanged(content::WebContents* source) {
2181   DCHECK(source);
2182   if (tab_strip_model_->GetActiveWebContents() == source) {
2183     window_->SetTranslateIconToggled(
2184         ChromeTranslateClient::FromWebContents(
2185             source)->GetLanguageState().IsPageTranslated());
2186   }
2187 }
2188
2189 void Browser::OnTranslateEnabledChanged(content::WebContents* source) {
2190   DCHECK(source);
2191   if (tab_strip_model_->GetActiveWebContents() == source)
2192     UpdateToolbar(false);
2193 }
2194
2195 ///////////////////////////////////////////////////////////////////////////////
2196 // Browser, Command and state updating (private):
2197
2198 void Browser::OnDevToolsDisabledChanged() {
2199   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2200     content::DevToolsAgentHost::DetachAllClients();
2201 }
2202
2203 ///////////////////////////////////////////////////////////////////////////////
2204 // Browser, UI update coalescing and handling (private):
2205
2206 void Browser::UpdateToolbar(bool should_restore_state) {
2207   window_->UpdateToolbar(should_restore_state ?
2208       tab_strip_model_->GetActiveWebContents() : NULL);
2209 }
2210
2211 void Browser::ScheduleUIUpdate(WebContents* source,
2212                                unsigned changed_flags) {
2213   DCHECK(source);
2214   int index = tab_strip_model_->GetIndexOfWebContents(source);
2215   DCHECK_NE(TabStripModel::kNoTab, index);
2216
2217   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2218   // is fixed.
2219   tracked_objects::ScopedTracker tracking_profile1(
2220       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2221           "466285 Browser::ScheduleUIUpdate::Toolbar"));
2222   // Do some synchronous updates.
2223   if (changed_flags & content::INVALIDATE_TYPE_URL) {
2224     if (source == tab_strip_model_->GetActiveWebContents()) {
2225       // Only update the URL for the current tab. Note that we do not update
2226       // the navigation commands since those would have already been updated
2227       // synchronously by NavigationStateChanged.
2228       UpdateToolbar(false);
2229     } else {
2230       // Clear the saved tab state for the tab that navigated, so that we don't
2231       // restore any user text after the old URL has been invalidated (e.g.,
2232       // after a new navigation commits in that tab while unfocused).
2233       window_->ResetToolbarTabState(source);
2234     }
2235     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2236   }
2237
2238   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2239   // is fixed.
2240   tracked_objects::ScopedTracker tracking_profile2(
2241       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2242           "466285 Browser::ScheduleUIUpdate::TabStripModel"));
2243   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2244     // Update the loading state synchronously. This is so the throbber will
2245     // immediately start/stop, which gives a more snappy feel. We want to do
2246     // this for any tab so they start & stop quickly.
2247     tab_strip_model_->UpdateWebContentsStateAt(
2248         tab_strip_model_->GetIndexOfWebContents(source),
2249         TabStripModelObserver::LOADING_ONLY);
2250     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2251     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2252     // changed_flags.
2253   }
2254
2255   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2256     // To correctly calculate whether the title changed while not loading
2257     // we need to process the update synchronously. This state only matters for
2258     // the TabStripModel, so we notify the TabStripModel now and notify others
2259     // asynchronously.
2260     tab_strip_model_->UpdateWebContentsStateAt(
2261         tab_strip_model_->GetIndexOfWebContents(source),
2262         TabStripModelObserver::TITLE_NOT_LOADING);
2263   }
2264
2265   // If the only updates were synchronously handled above, we're done.
2266   if (changed_flags == 0)
2267     return;
2268
2269   // Save the dirty bits.
2270   scheduled_updates_[source] |= changed_flags;
2271
2272   if (!chrome_updater_factory_.HasWeakPtrs()) {
2273     // No task currently scheduled, start another.
2274     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
2275         FROM_HERE, base::Bind(&Browser::ProcessPendingUIUpdates,
2276                               chrome_updater_factory_.GetWeakPtr()),
2277         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2278   }
2279 }
2280
2281 void Browser::ProcessPendingUIUpdates() {
2282 #ifndef NDEBUG
2283   // Validate that all tabs we have pending updates for exist. This is scary
2284   // because the pending list must be kept in sync with any detached or
2285   // deleted tabs.
2286   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2287        i != scheduled_updates_.end(); ++i) {
2288     bool found = false;
2289     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2290       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2291         found = true;
2292         break;
2293       }
2294     }
2295     DCHECK(found);
2296   }
2297 #endif
2298
2299   chrome_updater_factory_.InvalidateWeakPtrs();
2300
2301   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2302   // is fixed.
2303   tracked_objects::ScopedTracker tracking_profile1(
2304       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2305           "467185 Browser::ProcessPendingUIUpdates1"));
2306
2307   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2308        i != scheduled_updates_.end(); ++i) {
2309     // Do not dereference |contents|, it may be out-of-date!
2310     const WebContents* contents = i->first;
2311     unsigned flags = i->second;
2312
2313     if (contents == tab_strip_model_->GetActiveWebContents()) {
2314       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2315       // is fixed.
2316       tracked_objects::ScopedTracker tracking_profile2(
2317           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2318               "467185 Browser::ProcessPendingUIUpdates2"));
2319
2320       // Updates that only matter when the tab is selected go here.
2321
2322       // Updating the URL happens synchronously in ScheduleUIUpdate.
2323       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2324         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2325             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2326       }
2327
2328       if (flags & (content::INVALIDATE_TYPE_TAB |
2329                    content::INVALIDATE_TYPE_TITLE)) {
2330         window_->UpdateTitleBar();
2331       }
2332     }
2333
2334     // Updates that don't depend upon the selected state go here.
2335     if (flags &
2336         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2337       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2338       // is fixed.
2339       tracked_objects::ScopedTracker tracking_profile3(
2340           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2341               "467185 Browser::ProcessPendingUIUpdates3"));
2342       tab_strip_model_->UpdateWebContentsStateAt(
2343           tab_strip_model_->GetIndexOfWebContents(contents),
2344           TabStripModelObserver::ALL);
2345     }
2346
2347     // Update the bookmark bar. It may happen that the tab is crashed, and if
2348     // so, the bookmark bar should be hidden.
2349     if (flags & content::INVALIDATE_TYPE_TAB) {
2350       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2351       // is fixed.
2352       tracked_objects::ScopedTracker tracking_profile4(
2353           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2354               "467185 Browser::ProcessPendingUIUpdates4"));
2355       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2356     }
2357
2358     // We don't need to process INVALIDATE_STATE, since that's not visible.
2359   }
2360
2361   scheduled_updates_.clear();
2362 }
2363
2364 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2365   if (!contents)
2366     return;
2367
2368   UpdateMap::iterator i = scheduled_updates_.find(contents);
2369   if (i != scheduled_updates_.end())
2370     scheduled_updates_.erase(i);
2371 }
2372
2373 ///////////////////////////////////////////////////////////////////////////////
2374 // Browser, Getters for UI (private):
2375
2376 StatusBubble* Browser::GetStatusBubble() {
2377   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2378   if (chrome::IsRunningInAppMode())
2379     return NULL;
2380
2381   return window_ ? window_->GetStatusBubble() : NULL;
2382 }
2383
2384 ///////////////////////////////////////////////////////////////////////////////
2385 // Browser, Session restore functions (private):
2386
2387 void Browser::SyncHistoryWithTabs(int index) {
2388   SessionService* session_service =
2389       SessionServiceFactory::GetForProfileIfExisting(profile());
2390   if (session_service) {
2391     for (int i = index; i < tab_strip_model_->count(); ++i) {
2392       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2393       if (web_contents) {
2394         SessionTabHelper* session_tab_helper =
2395             SessionTabHelper::FromWebContents(web_contents);
2396         session_service->SetTabIndexInWindow(
2397             session_id(), session_tab_helper->session_id(), i);
2398         session_service->SetPinnedState(
2399             session_id(),
2400             session_tab_helper->session_id(),
2401             tab_strip_model_->IsTabPinned(i));
2402       }
2403     }
2404   }
2405 }
2406
2407 ///////////////////////////////////////////////////////////////////////////////
2408 // Browser, In-progress download termination handling (private):
2409
2410 bool Browser::CanCloseWithInProgressDownloads() {
2411   // If we've prompted, we need to hear from the user before we
2412   // can close.
2413   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2414     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2415
2416   int num_downloads_blocking;
2417   Browser::DownloadClosePreventionType dialog_type =
2418       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2419   if (dialog_type == DOWNLOAD_CLOSE_OK)
2420     return true;
2421
2422   // Closing this window will kill some downloads; prompt to make sure
2423   // that's ok.
2424   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2425   window_->ConfirmBrowserCloseWithPendingDownloads(
2426       num_downloads_blocking,
2427       dialog_type,
2428       false,
2429       base::Bind(&Browser::InProgressDownloadResponse,
2430                  weak_factory_.GetWeakPtr()));
2431
2432   // Return false so the browser does not close.  We'll close if the user
2433   // confirms in the dialog.
2434   return false;
2435 }
2436
2437 ///////////////////////////////////////////////////////////////////////////////
2438 // Browser, Assorted utility functions (private):
2439
2440 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2441   Browser* delegate = set_delegate ? this : NULL;
2442   // WebContents...
2443   web_contents->SetDelegate(delegate);
2444
2445   // ...and all the helpers.
2446   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2447   WebContentsModalDialogManager::FromWebContents(web_contents)->
2448       SetDelegate(delegate);
2449   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2450   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2451   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2452   translate::ContentTranslateDriver& content_translate_driver =
2453       ChromeTranslateClient::FromWebContents(web_contents)->translate_driver();
2454   if (delegate) {
2455     ui_zoom::ZoomController::FromWebContents(web_contents)->AddObserver(this);
2456     content_translate_driver.AddObserver(this);
2457   } else {
2458     ui_zoom::ZoomController::FromWebContents(web_contents)->RemoveObserver(
2459         this);
2460     content_translate_driver.RemoveObserver(this);
2461   }
2462 }
2463
2464 void Browser::CloseFrame() {
2465   window_->Close();
2466 }
2467
2468 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2469                                 int index,
2470                                 DetachType type) {
2471   if (type == DETACH_TYPE_DETACH) {
2472     // Save the current location bar state, but only if the tab being detached
2473     // is the selected tab.  Because saving state can conditionally revert the
2474     // location bar, saving the current tab's location bar state to a
2475     // non-selected tab can corrupt both tabs.
2476     if (contents == tab_strip_model_->GetActiveWebContents()) {
2477       LocationBar* location_bar = window()->GetLocationBar();
2478       if (location_bar)
2479         location_bar->SaveStateToContents(contents);
2480     }
2481
2482     if (!tab_strip_model_->closing_all())
2483       SyncHistoryWithTabs(0);
2484   }
2485
2486   SetAsDelegate(contents, false);
2487   RemoveScheduledUpdatesFor(contents);
2488
2489   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2490     find_bar_controller_->ChangeWebContents(NULL);
2491   }
2492
2493   // Stop observing search model changes for this tab.
2494   search_delegate_->OnTabDetached(contents);
2495
2496   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2497     if (interstitial_observers_[i]->web_contents() != contents)
2498       continue;
2499
2500     delete interstitial_observers_[i];
2501     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2502     return;
2503   }
2504 }
2505
2506 bool Browser::SupportsLocationBar() const {
2507   // Tabbed browser always show a location bar.
2508   if (is_type_tabbed())
2509     return true;
2510
2511   // Non-app windows that aren't tabbed or system windows should always show a
2512   // location bar, unless they are from a trusted source.
2513   if (!is_app())
2514     return !is_trusted_source();
2515
2516   if (hosted_app_controller_)
2517     return hosted_app_controller_->SupportsLocationBar();
2518
2519   return false;
2520 }
2521
2522 bool Browser::ShouldUseWebAppFrame() const {
2523   // Only use the web app frame for apps in ash, and only if the web app frame
2524   // is enabled.
2525   if (!is_app())
2526     return false;
2527
2528   if (hosted_app_controller_)
2529     return hosted_app_controller_->should_use_web_app_frame();
2530
2531   return false;
2532 }
2533
2534 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2535                                         bool check_fullscreen) const {
2536   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2537
2538   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2539
2540   if (is_type_tabbed())
2541     features |= FEATURE_BOOKMARKBAR;
2542
2543   if (!hide_ui_for_fullscreen) {
2544     if (!is_type_tabbed())
2545       features |= FEATURE_TITLEBAR;
2546
2547     if (is_type_tabbed())
2548       features |= FEATURE_TABSTRIP;
2549
2550     if (is_type_tabbed())
2551       features |= FEATURE_TOOLBAR;
2552
2553     if (SupportsLocationBar())
2554       features |= FEATURE_LOCATIONBAR;
2555
2556     if (ShouldUseWebAppFrame())
2557       features |= FEATURE_WEBAPPFRAME;
2558   }
2559   return !!(features & feature);
2560 }
2561
2562 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2563   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2564   // fixed.
2565   tracked_objects::ScopedTracker tracking_profile1(
2566       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2567           "467185 Browser::UpdateBookmarkBarState1"));
2568   BookmarkBar::State state;
2569   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2570   // mode, unless on the new tab page.
2571   if (profile_->IsGuestSession()) {
2572     state = BookmarkBar::HIDDEN;
2573   } else if (browser_defaults::bookmarks_enabled &&
2574       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2575       !ShouldHideUIForFullscreen()) {
2576     state = BookmarkBar::SHOW;
2577   } else {
2578     // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2579     // is fixed.
2580     tracked_objects::ScopedTracker tracking_profile2(
2581         FROM_HERE_WITH_EXPLICIT_FUNCTION(
2582             "467185 Browser::UpdateBookmarkBarState2"));
2583     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2584     BookmarkTabHelper* bookmark_tab_helper =
2585         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2586     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2587       state = BookmarkBar::DETACHED;
2588     else
2589       state = BookmarkBar::HIDDEN;
2590   }
2591
2592   if (state == bookmark_bar_state_)
2593     return;
2594
2595   bookmark_bar_state_ = state;
2596
2597   if (!window_)
2598     return;  // This is called from the constructor when window_ is NULL.
2599
2600   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2601     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2602     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2603     // end up querying state once they process the tab switch.
2604     return;
2605   }
2606
2607   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2608   // fixed.
2609   tracked_objects::ScopedTracker tracking_profile3(
2610       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2611           "467185 Browser::UpdateBookmarkBarState3"));
2612
2613   bool should_animate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2614   window_->BookmarkBarStateChanged(should_animate ?
2615       BookmarkBar::ANIMATE_STATE_CHANGE :
2616       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2617 }
2618
2619 bool Browser::ShouldHideUIForFullscreen() const {
2620   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2621   // keep the controls in a slide-down panel.
2622   return window_ && window_->ShouldHideUIForFullscreen();
2623 }
2624
2625 bool Browser::MaybeCreateBackgroundContents(
2626     int route_id,
2627     int main_frame_route_id,
2628     WebContents* opener_web_contents,
2629     const std::string& frame_name,
2630     const GURL& target_url,
2631     const std::string& partition_id,
2632     content::SessionStorageNamespace* session_storage_namespace) {
2633   GURL opener_url = opener_web_contents->GetURL();
2634   ExtensionService* extensions_service =
2635       extensions::ExtensionSystem::Get(profile_)->extension_service();
2636
2637   if (!opener_url.is_valid() ||
2638       frame_name.empty() ||
2639       !extensions_service ||
2640       !extensions_service->is_ready())
2641     return false;
2642
2643   // Only hosted apps have web extents, so this ensures that only hosted apps
2644   // can create BackgroundContents. We don't have to check for background
2645   // permission as that is checked in RenderMessageFilter when the CreateWindow
2646   // message is processed.
2647   const Extension* extension = extensions::ExtensionRegistry::Get(profile_)
2648                                    ->enabled_extensions()
2649                                    .GetHostedAppByURL(opener_url);
2650   if (!extension)
2651     return false;
2652
2653   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2654   BackgroundContentsService* service =
2655       BackgroundContentsServiceFactory::GetForProfile(profile_);
2656   if (!service)
2657     return false;
2658
2659   // Ensure that we're trying to open this from the extension's process.
2660   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2661   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2662   if (!opener_site_instance->GetProcess() ||
2663       !process_map->Contains(
2664           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2665     return false;
2666   }
2667
2668   // Only allow a single background contents per app.
2669   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2670   BackgroundContents* existing =
2671       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2672   if (existing) {
2673     // For non-scriptable background contents, ignore the request altogether,
2674     // (returning true, so that a regular WebContents isn't created either).
2675     if (!allow_js_access)
2676       return true;
2677     // For scriptable background pages, if one already exists, close it (even
2678     // if it was specified in the manifest).
2679     delete existing;
2680   }
2681
2682   // If script access is not allowed, create the the background contents in a
2683   // new SiteInstance, so that a separate process is used.
2684   scoped_refptr<content::SiteInstance> site_instance =
2685       allow_js_access ?
2686       opener_site_instance :
2687       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2688
2689   // Passed all the checks, so this should be created as a BackgroundContents.
2690   BackgroundContents* contents =
2691       service->CreateBackgroundContents(site_instance.get(),
2692                                         route_id,
2693                                         main_frame_route_id,
2694                                         profile_,
2695                                         frame_name,
2696                                         base::ASCIIToUTF16(extension->id()),
2697                                         partition_id,
2698                                         session_storage_namespace);
2699
2700   // When a separate process is used, the original renderer cannot access the
2701   // new window later, thus we need to navigate the window now.
2702   if (contents && !allow_js_access) {
2703     contents->web_contents()->GetController().LoadURL(
2704         target_url,
2705         content::Referrer(),
2706         ui::PAGE_TRANSITION_LINK,
2707         std::string());  // No extra headers.
2708   }
2709
2710   return contents != NULL;
2711 }