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