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/logging.h"
  19 #include "base/metrics/histogram.h"
  20 #include "base/prefs/pref_service.h"
  21 #include "base/process/process_info.h"
  22 #include "base/profiler/scoped_tracker.h"
  23 #include "base/strings/string_number_conversions.h"
  24 #include "base/strings/string_util.h"
  25 #include "base/strings/stringprintf.h"
  26 #include "base/strings/utf_string_conversions.h"
  27 #include "base/threading/thread.h"
  28 #include "base/threading/thread_restrictions.h"
  29 #include "base/time/time.h"
  30 #include "chrome/app/chrome_command_ids.h"
  31 #include "chrome/browser/app_mode/app_mode_utils.h"
  32 #include "chrome/browser/autofill/personal_data_manager_factory.h"
  33 #include "chrome/browser/background/background_contents.h"
  34 #include "chrome/browser/background/background_contents_service.h"
  35 #include "chrome/browser/background/background_contents_service_factory.h"
  36 #include "chrome/browser/browser_process.h"
  37 #include "chrome/browser/browser_shutdown.h"
  38 #include "chrome/browser/character_encoding.h"
  39 #include "chrome/browser/chrome_notification_types.h"
  40 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  41 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  42 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  43 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  44 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  45 #include "chrome/browser/defaults.h"
  46 #include "chrome/browser/devtools/devtools_toggle_action.h"
  47 #include "chrome/browser/devtools/devtools_window.h"
  48 #include "chrome/browser/download/download_item_model.h"
  49 #include "chrome/browser/download/download_service.h"
  50 #include "chrome/browser/download/download_service_factory.h"
  51 #include "chrome/browser/download/download_shelf.h"
  52 #include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
  53 #include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
  54 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  55 #include "chrome/browser/extensions/extension_service.h"
  56 #include "chrome/browser/extensions/extension_ui_util.h"
  57 #include "chrome/browser/extensions/extension_util.h"
  58 #include "chrome/browser/extensions/tab_helper.h"
  59 #include "chrome/browser/file_select_helper.h"
  60 #include "chrome/browser/first_run/first_run.h"
  61 #include "chrome/browser/history/top_sites_factory.h"
  62 #include "chrome/browser/infobars/infobar_service.h"
  63 #include "chrome/browser/lifetime/application_lifetime.h"
  64 #include "chrome/browser/notifications/notification_ui_manager.h"
  65 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  66 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  67 #include "chrome/browser/profiles/profile.h"
  68 #include "chrome/browser/profiles/profile_destroyer.h"
  69 #include "chrome/browser/profiles/profile_metrics.h"
  70 #include "chrome/browser/profiles/profiles_state.h"
  71 #include "chrome/browser/repost_form_warning_controller.h"
  72 #include "chrome/browser/search/search.h"
  73 #include "chrome/browser/sessions/session_restore.h"
  74 #include "chrome/browser/sessions/session_service.h"
  75 #include "chrome/browser/sessions/session_service_factory.h"
  76 #include "chrome/browser/sessions/session_tab_helper.h"
  77 #include "chrome/browser/sessions/tab_restore_service.h"
  78 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  79 #include "chrome/browser/sync/profile_sync_service.h"
  80 #include "chrome/browser/sync/profile_sync_service_factory.h"
  81 #include "chrome/browser/sync/sync_ui_util.h"
  82 #include "chrome/browser/tab_contents/retargeting_details.h"
  83 #include "chrome/browser/tab_contents/tab_util.h"
  84 #include "chrome/browser/themes/theme_service.h"
  85 #include "chrome/browser/themes/theme_service_factory.h"
  86 #include "chrome/browser/translate/chrome_translate_client.h"
  87 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
  88 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  89 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  90 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  91 #include "chrome/browser/ui/browser_command_controller.h"
  92 #include "chrome/browser/ui/browser_commands.h"
  93 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  94 #include "chrome/browser/ui/browser_dialogs.h"
  95 #include "chrome/browser/ui/browser_finder.h"
  96 #include "chrome/browser/ui/browser_instant_controller.h"
  97 #include "chrome/browser/ui/browser_iterator.h"
  98 #include "chrome/browser/ui/browser_list.h"
  99 #include "chrome/browser/ui/browser_navigator.h"
 100 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 101 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 102 #include "chrome/browser/ui/browser_tabstrip.h"
 103 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 104 #include "chrome/browser/ui/browser_ui_prefs.h"
 105 #include "chrome/browser/ui/browser_window.h"
 106 #include "chrome/browser/ui/chrome_pages.h"
 107 #include "chrome/browser/ui/chrome_select_file_policy.h"
 108 #include "chrome/browser/ui/exclusive_access/fullscreen_controller.h"
 109 #include "chrome/browser/ui/exclusive_access/mouse_lock_controller.h"
 110 #include "chrome/browser/ui/extensions/bookmark_app_browser_controller.h"
 111 #include "chrome/browser/ui/fast_unload_controller.h"
 112 #include "chrome/browser/ui/find_bar/find_bar.h"
 113 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 114 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 115 #include "chrome/browser/ui/global_error/global_error.h"
 116 #include "chrome/browser/ui/global_error/global_error_service.h"
 117 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 118 #include "chrome/browser/ui/location_bar/location_bar.h"
 119 #include "chrome/browser/ui/media_utils.h"
 120 #include "chrome/browser/ui/search/search_delegate.h"
 121 #include "chrome/browser/ui/search/search_model.h"
 122 #include "chrome/browser/ui/search/search_tab_helper.h"
 123 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 124 #include "chrome/browser/ui/settings_window_manager.h"
 125 #include "chrome/browser/ui/singleton_tabs.h"
 126 #include "chrome/browser/ui/status_bubble.h"
 127 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 128 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 129 #include "chrome/browser/ui/tab_dialogs.h"
 130 #include "chrome/browser/ui/tab_helpers.h"
 131 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 132 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 133 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 134 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 135 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 136 #include "chrome/browser/ui/unload_controller.h"
 137 #include "chrome/browser/ui/validation_message_bubble.h"
 138 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 139 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 140 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 141 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 142 #include "chrome/browser/upgrade_detector.h"
 143 #include "chrome/common/chrome_constants.h"
 144 #include "chrome/common/chrome_switches.h"
 145 #include "chrome/common/custom_handlers/protocol_handler.h"
 146 #include "chrome/common/pref_names.h"
 147 #include "chrome/common/profiling.h"
 148 #include "chrome/common/search_types.h"
 149 #include "chrome/common/url_constants.h"
 150 #include "chrome/grit/chromium_strings.h"
 151 #include "chrome/grit/generated_resources.h"
 152 #include "chrome/grit/locale_settings.h"
 153 #include "components/app_modal/javascript_dialog_manager.h"
 154 #include "components/bookmarks/browser/bookmark_model.h"
 155 #include "components/bookmarks/browser/bookmark_utils.h"
 156 #include "components/content_settings/core/browser/host_content_settings_map.h"
 157 #include "components/favicon/content/content_favicon_driver.h"
 158 #include "components/history/core/browser/top_sites.h"
 159 #include "components/infobars/core/simple_alert_infobar_delegate.h"
 160 #include "components/search/search.h"
 161 #include "components/sessions/session_types.h"
 162 #include "components/startup_metric_utils/startup_metric_utils.h"
 163 #include "components/translate/core/browser/language_state.h"
 164 #include "components/ui/zoom/zoom_controller.h"
 165 #include "components/web_modal/popup_manager.h"
 166 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 167 #include "content/public/browser/devtools_agent_host.h"
 168 #include "content/public/browser/download_item.h"
 169 #include "content/public/browser/download_manager.h"
 170 #include "content/public/browser/interstitial_page.h"
 171 #include "content/public/browser/invalidate_type.h"
 172 #include "content/public/browser/navigation_controller.h"
 173 #include "content/public/browser/navigation_entry.h"
 174 #include "content/public/browser/notification_details.h"
 175 #include "content/public/browser/notification_service.h"
 176 #include "content/public/browser/plugin_service.h"
 177 #include "content/public/browser/render_process_host.h"
 178 #include "content/public/browser/render_view_host.h"
 179 #include "content/public/browser/render_widget_host_view.h"
 180 #include "content/public/browser/site_instance.h"
 181 #include "content/public/browser/user_metrics.h"
 182 #include "content/public/browser/web_contents.h"
 183 #include "content/public/common/content_switches.h"
 184 #include "content/public/common/page_zoom.h"
 185 #include "content/public/common/renderer_preferences.h"
 186 #include "content/public/common/webplugininfo.h"
 187 #include "extensions/browser/extension_prefs.h"
 188 #include "extensions/browser/extension_registry.h"
 189 #include "extensions/browser/extension_system.h"
 190 #include "extensions/common/constants.h"
 191 #include "extensions/common/extension.h"
 192 #include "extensions/common/manifest_handlers/background_info.h"
 193 #include "net/base/filename_util.h"
 194 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 195 #include "net/cookies/cookie_monster.h"
 196 #include "net/url_request/url_request_context.h"
 197 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 198 #include "ui/base/l10n/l10n_util.h"
 199 #include "ui/base/window_open_disposition.h"
 200 #include "ui/gfx/geometry/point.h"
 201 #include "ui/shell_dialogs/selected_file_info.h"
 202
 203 #if defined(OS_WIN)
 204 #include "base/win/metro.h"
 205 #include "chrome/browser/ssl/ssl_error_info.h"
 206 #include "chrome/browser/task_manager/task_manager.h"
 207 #include "chrome/browser/ui/view_ids.h"
 208 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 209 #include "components/browser_watcher/exit_funnel_win.h"
 210 #include "ui/base/touch/touch_device.h"
 211 #include "ui/base/win/shell.h"
 212 #endif  // OS_WIN
 213
 214 #if defined(OS_CHROMEOS)
 215 #include "chrome/browser/chromeos/fileapi/external_file_url_util.h"
 216 #endif
 217
 218 #if defined(USE_ASH)
 219 #include "ash/ash_switches.h"
 220 #endif
 221
 222 using base::TimeDelta;
 223 using base::UserMetricsAction;
 224 using content::NativeWebKeyboardEvent;
 225 using content::NavigationController;
 226 using content::NavigationEntry;
 227 using content::OpenURLParams;
 228 using content::PluginService;
 229 using content::Referrer;
 230 using content::RenderWidgetHostView;
 231 using content::SiteInstance;
 232 using content::WebContents;
 233 using extensions::Extension;
 234 using ui::WebDialogDelegate;
 235 using web_modal::WebContentsModalDialogManager;
 236 using blink::WebWindowFeatures;
 237
 238 ///////////////////////////////////////////////////////////////////////////////
 239
 240 namespace {
 241
 242 // How long we wait before updating the browser chrome while loading a page.
 243 const int kUIUpdateCoalescingTimeMS = 200;
 244
 245 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 246   return BrowserWindow::CreateBrowserWindow(browser);
 247 }
 248
 249 // Is the fast tab unload experiment enabled?
 250 bool IsFastTabUnloadEnabled() {
 251   return base::CommandLine::ForCurrentProcess()->HasSwitch(
 252       switches::kEnableFastUnload);
 253 }
 254
 255 }  // namespace
 256
 257 ////////////////////////////////////////////////////////////////////////////////
 258 // Browser, CreateParams:
 259
 260 Browser::CreateParams::CreateParams(Profile* profile,
 261                                     chrome::HostDesktopType host_desktop_type)
 262     : type(TYPE_TABBED),
 263       profile(profile),
 264       host_desktop_type(host_desktop_type),
 265       trusted_source(false),
 266       initial_show_state(ui::SHOW_STATE_DEFAULT),
 267       is_session_restore(false),
 268       window(NULL) {
 269 }
 270
 271 Browser::CreateParams::CreateParams(Type type,
 272                                     Profile* profile,
 273                                     chrome::HostDesktopType host_desktop_type)
 274     : type(type),
 275       profile(profile),
 276       host_desktop_type(host_desktop_type),
 277       trusted_source(false),
 278       initial_show_state(ui::SHOW_STATE_DEFAULT),
 279       is_session_restore(false),
 280       window(NULL) {
 281 }
 282
 283 // static
 284 Browser::CreateParams Browser::CreateParams::CreateForApp(
 285     const std::string& app_name,
 286     bool trusted_source,
 287     const gfx::Rect& window_bounds,
 288     Profile* profile,
 289     chrome::HostDesktopType host_desktop_type) {
 290   DCHECK(!app_name.empty());
 291
 292   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 293   params.app_name = app_name;
 294   params.trusted_source = trusted_source;
 295   params.initial_bounds = window_bounds;
 296
 297   return params;
 298 }
 299
 300 // static
 301 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 302     Profile* profile,
 303     chrome::HostDesktopType host_desktop_type) {
 304   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 305   params.app_name = DevToolsWindow::kDevToolsApp;
 306   params.trusted_source = true;
 307   return params;
 308 }
 309
 310 ////////////////////////////////////////////////////////////////////////////////
 311 // Browser, InterstitialObserver:
 312
 313 class Browser::InterstitialObserver : public content::WebContentsObserver {
 314  public:
 315   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 316       : WebContentsObserver(web_contents),
 317         browser_(browser) {
 318   }
 319
 320   void DidAttachInterstitialPage() override {
 321     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 322   }
 323
 324   void DidDetachInterstitialPage() override {
 325     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 326   }
 327
 328  private:
 329   Browser* browser_;
 330
 331   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 332 };
 333
 334 ///////////////////////////////////////////////////////////////////////////////
 335 // Browser, Constructors, Creation, Showing:
 336
 337 Browser::Browser(const CreateParams& params)
 338     : extension_registry_observer_(this),
 339       type_(params.type),
 340       profile_(params.profile),
 341       window_(NULL),
 342       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 343       tab_strip_model_(
 344           new TabStripModel(tab_strip_model_delegate_.get(), params.profile)),
 345       app_name_(params.app_name),
 346       is_trusted_source_(params.trusted_source),
 347       cancel_download_confirmation_state_(NOT_PROMPTED),
 348       override_bounds_(params.initial_bounds),
 349       initial_show_state_(params.initial_show_state),
 350       is_session_restore_(params.is_session_restore),
 351       host_desktop_type_(
 352           BrowserWindow::AdjustHostDesktopType(params.host_desktop_type)),
 353       content_setting_bubble_model_delegate_(
 354           new BrowserContentSettingBubbleModelDelegate(this)),
 355       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 356       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 357       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 358       bookmark_bar_state_(BookmarkBar::HIDDEN),
 359       command_controller_(new chrome::BrowserCommandController(this)),
 360       window_has_shown_(false),
 361       chrome_updater_factory_(this),
 362       weak_factory_(this) {
 363   // If this causes a crash then a window is being opened using a profile type
 364   // that is disallowed by policy. The crash prevents the disabled window type
 365   // from opening at all, but the path that triggered it should be fixed.
 366   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 367   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 368       << "Only off the record browser may be opened in guest mode";
 369   DCHECK(!profile_->IsSystemProfile())
 370       << "The system profile should never have a real browser.";
 371   // TODO(mlerman): After this hits stable channel, see if there are counts
 372   // for this metric. If not, change the DCHECK above to a CHECK.
 373   if (profile_->IsSystemProfile())
 374     content::RecordAction(base::UserMetricsAction("BrowserForSystemProfile"));
 375
 376   // TODO(jeremy): Move to initializer list once flag is removed.
 377   if (IsFastTabUnloadEnabled())
 378     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 379   else
 380     unload_controller_.reset(new chrome::UnloadController(this));
 381
 382   tab_strip_model_->AddObserver(this);
 383
 384   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 385   search_model_.reset(new SearchModel());
 386   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 387
 388   extension_registry_observer_.Add(
 389       extensions::ExtensionRegistry::Get(profile_));
 390   registrar_.Add(this,
 391                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 392                  content::NotificationService::AllSources());
 393 #if defined(ENABLE_THEMES)
 394   registrar_.Add(
 395       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 396       content::Source<ThemeService>(
 397           ThemeServiceFactory::GetForProfile(profile_)));
 398 #endif
 399   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 400                  content::NotificationService::AllSources());
 401
 402   profile_pref_registrar_.Init(profile_->GetPrefs());
 403   profile_pref_registrar_.Add(
 404       prefs::kDevToolsDisabled,
 405       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 406   profile_pref_registrar_.Add(
 407       bookmarks::prefs::kShowBookmarkBar,
 408       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 409                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 410
 411   BrowserList::AddBrowser(this);
 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 (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 419     instant_controller_.reset(new BrowserInstantController(this));
 420
 421   if (extensions::BookmarkAppBrowserController::IsForBookmarkApp(this)) {
 422     bookmark_app_controller_.reset(
 423         new extensions::BookmarkAppBrowserController(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 (bookmark_app_controller_)
 433     bookmark_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 BrowserList::AddBrowser() to the end of this function and
 445   //             replace uses of this with BL's notifications.
 446   content::NotificationService::current()->Notify(
 447       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 448       content::Source<Browser>(this),
 449       content::NotificationService::NoDetails());
 450
 451   // TODO(beng): move to ChromeBrowserMain:
 452   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 453 #if defined(OS_WIN)
 454     // Notify PDM that this is a first run.
 455     ImportAutofillDataWin(
 456         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 457 #endif  // defined(OS_WIN)
 458   }
 459
 460   exclusive_access_manager_.reset(
 461       new ExclusiveAccessManager(window_->GetExclusiveAccessContext()));
 462
 463   // Must be initialized after window_.
 464   // Also: surprise! a modal dialog host is not necessary to host modal dialogs
 465   // without a modal dialog host, so that value may be null.
 466   popup_manager_.reset(new web_modal::PopupManager(
 467       GetWebContentsModalDialogHost()));
 468 }
 469
 470 Browser::~Browser() {
 471   // Stop observing notifications before continuing with destruction. Profile
 472   // destruction will unload extensions and reentrant calls to Browser:: should
 473   // be avoided while it is being torn down.
 474   registrar_.RemoveAll();
 475   extension_registry_observer_.RemoveAll();
 476
 477   // The tab strip should not have any tabs at this point.
 478   DCHECK(tab_strip_model_->empty());
 479   tab_strip_model_->RemoveObserver(this);
 480
 481   // Destroy the BrowserCommandController before removing the browser, so that
 482   // it doesn't act on any notifications that are sent as a result of removing
 483   // the browser.
 484   command_controller_.reset();
 485   BrowserList::RemoveBrowser(this);
 486
 487   SessionService* session_service =
 488       SessionServiceFactory::GetForProfile(profile_);
 489   if (session_service)
 490     session_service->WindowClosed(session_id_);
 491
 492   TabRestoreService* tab_restore_service =
 493       TabRestoreServiceFactory::GetForProfile(profile());
 494   if (tab_restore_service)
 495     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 496
 497 #if !defined(OS_MACOSX)
 498   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 499     // We're the last browser window with this profile. We need to nuke the
 500     // TabRestoreService, which will start the shutdown of the
 501     // NavigationControllers and allow for proper shutdown. If we don't do this
 502     // chrome won't shutdown cleanly, and may end up crashing when some
 503     // thread tries to use the IO thread (or another thread) that is no longer
 504     // valid.
 505     // This isn't a valid assumption for Mac OS, as it stays running after
 506     // the last browser has closed. The Mac equivalent is in its app
 507     // controller.
 508     TabRestoreServiceFactory::ResetForProfile(profile_);
 509   }
 510 #endif
 511
 512   profile_pref_registrar_.RemoveAll();
 513
 514   encoding_auto_detect_.Destroy();
 515
 516   // Destroy BrowserExtensionWindowController before the incognito profile
 517   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 518   extension_window_controller_.reset();
 519
 520   // Destroy BrowserInstantController before the incongnito profile is destroyed
 521   // because the InstantController destructor depends on this profile.
 522   instant_controller_.reset();
 523
 524   if (profile_->IsOffTheRecord() &&
 525       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 526     if (profile_->IsGuestSession()) {
 527 // ChromeOS handles guest data independently.
 528 #if !defined(OS_CHROMEOS)
 529       // Clear all browsing data once a Guest Session completes. The Guest
 530       // profile has BrowserContextKeyedServices that the Incognito profile
 531       // doesn't, so the ProfileDestroyer can't delete it properly.
 532       // TODO(mlerman): Delete the guest using an improved ProfileDestroyer.
 533       profiles::RemoveBrowsingDataForProfile(profile_->GetPath());
 534 #endif
 535     } else {
 536       // An incognito profile is no longer needed, this indirectly frees
 537       // its cache and cookies once it gets destroyed at the appropriate time.
 538       ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 539     }
 540   }
 541
 542   // There may be pending file dialogs, we need to tell them that we've gone
 543   // away so they don't try and call back to us.
 544   if (select_file_dialog_.get())
 545     select_file_dialog_->ListenerDestroyed();
 546
 547   int num_downloads;
 548   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 549           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 550       !browser_defaults::kBrowserAliveWithNoWindows) {
 551     DownloadService::CancelAllDownloads();
 552   }
 553 }
 554
 555 ///////////////////////////////////////////////////////////////////////////////
 556 // Getters & Setters
 557
 558 FindBarController* Browser::GetFindBarController() {
 559   if (!find_bar_controller_.get()) {
 560     FindBar* find_bar = window_->CreateFindBar();
 561     find_bar_controller_.reset(new FindBarController(find_bar));
 562     find_bar->SetFindBarController(find_bar_controller_.get());
 563     find_bar_controller_->ChangeWebContents(
 564         tab_strip_model_->GetActiveWebContents());
 565     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
 566   }
 567   return find_bar_controller_.get();
 568 }
 569
 570 bool Browser::HasFindBarController() const {
 571   return find_bar_controller_.get() != NULL;
 572 }
 573
 574 bool Browser::is_app() const {
 575   return !app_name_.empty();
 576 }
 577
 578 bool Browser::is_devtools() const {
 579   return app_name_ == DevToolsWindow::kDevToolsApp;
 580 }
 581
 582 ///////////////////////////////////////////////////////////////////////////////
 583 // Browser, State Storage and Retrieval for UI:
 584
 585 gfx::Image Browser::GetCurrentPageIcon() const {
 586   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 587   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 588   // window during the window's creation (before tabs have been added).
 589   favicon::FaviconDriver* favicon_driver =
 590       web_contents
 591           ? favicon::ContentFaviconDriver::FromWebContents(web_contents)
 592           : nullptr;
 593   return favicon_driver ? favicon_driver->GetFavicon() : gfx::Image();
 594 }
 595
 596 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 597   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 598   base::string16 title;
 599
 600   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 601   // window during the window's creation (before tabs have been added).
 602   if (contents) {
 603     // The web app frame uses the host instead of the title.
 604     if (ShouldUseWebAppFrame())
 605       return base::UTF8ToUTF16(contents->GetURL().host());
 606
 607     title = contents->GetTitle();
 608     FormatTitleForDisplay(&title);
 609   }
 610   if (title.empty())
 611     title = CoreTabHelper::GetDefaultTitle();
 612
 613 #if defined(OS_MACOSX)
 614   // On Mac, we don't want to suffix the page title with
 615   // the application name.
 616   return title;
 617 #elif defined(USE_ASH)
 618   // On Ash, we don't want to suffix the page title with the application name,
 619   // but on Windows, where USE_ASH can also be true, we still want the prefix
 620   // on desktop.
 621   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 622     return title;
 623 #endif
 624   // Don't append the app name to window titles on app frames and app popups
 625   return is_app() ?
 626       title :
 627       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 628 }
 629
 630 // static
 631 void Browser::FormatTitleForDisplay(base::string16* title) {
 632   size_t current_index = 0;
 633   size_t match_index;
 634   while ((match_index = title->find(L'\n', current_index)) !=
 635          base::string16::npos) {
 636     title->replace(match_index, 1, base::string16());
 637     current_index = match_index;
 638   }
 639 }
 640
 641 ///////////////////////////////////////////////////////////////////////////////
 642 // Browser, OnBeforeUnload handling:
 643
 644 bool Browser::ShouldCloseWindow() {
 645   if (!CanCloseWithInProgressDownloads())
 646     return false;
 647
 648   if (IsFastTabUnloadEnabled())
 649     return fast_unload_controller_->ShouldCloseWindow();
 650   return unload_controller_->ShouldCloseWindow();
 651 }
 652
 653 bool Browser::CallBeforeUnloadHandlers(
 654     const base::Callback<void(bool)>& on_close_confirmed) {
 655   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 656   if (IsFastTabUnloadEnabled()) {
 657     return fast_unload_controller_->CallBeforeUnloadHandlers(
 658         on_close_confirmed);
 659   }
 660   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 661 }
 662
 663 void Browser::ResetBeforeUnloadHandlers() {
 664   cancel_download_confirmation_state_ = NOT_PROMPTED;
 665   if (IsFastTabUnloadEnabled())
 666     fast_unload_controller_->ResetBeforeUnloadHandlers();
 667   else
 668     unload_controller_->ResetBeforeUnloadHandlers();
 669 }
 670
 671 bool Browser::HasCompletedUnloadProcessing() const {
 672   DCHECK(IsFastTabUnloadEnabled());
 673   return fast_unload_controller_->HasCompletedUnloadProcessing();
 674 }
 675
 676 bool Browser::IsAttemptingToCloseBrowser() const {
 677   if (IsFastTabUnloadEnabled())
 678     return fast_unload_controller_->is_attempting_to_close_browser();
 679   return unload_controller_->is_attempting_to_close_browser();
 680 }
 681
 682 void Browser::OnWindowClosing() {
 683   if (!ShouldCloseWindow())
 684     return;
 685
 686   // Application should shutdown on last window close if the user is explicitly
 687   // trying to quit, or if there is nothing keeping the browser alive (such as
 688   // AppController on the Mac, or BackgroundContentsService for background
 689   // pages).
 690   bool should_quit_if_last_browser =
 691       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 692
 693   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this)) {
 694 #if defined(OS_WIN)
 695     browser_watcher::ExitFunnel::RecordSingleEvent(
 696           chrome::kBrowserExitCodesRegistryPath, L"LastWindowClose");
 697 #endif
 698     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 699   }
 700
 701   // Don't use GetForProfileIfExisting here, we want to force creation of the
 702   // session service so that user can restore what was open.
 703   SessionService* session_service =
 704       SessionServiceFactory::GetForProfile(profile());
 705   if (session_service)
 706     session_service->WindowClosing(session_id());
 707
 708   TabRestoreService* tab_restore_service =
 709       TabRestoreServiceFactory::GetForProfile(profile());
 710
 711 #if defined(USE_AURA)
 712   if (tab_restore_service && is_app() && !is_devtools())
 713     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 714 #endif
 715
 716   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 717     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 718
 719   // TODO(sky): convert session/tab restore to use notification.
 720   content::NotificationService::current()->Notify(
 721       chrome::NOTIFICATION_BROWSER_CLOSING,
 722       content::Source<Browser>(this),
 723       content::NotificationService::NoDetails());
 724
 725   if (!IsFastTabUnloadEnabled())
 726     tab_strip_model_->CloseAllTabs();
 727 }
 728
 729 ////////////////////////////////////////////////////////////////////////////////
 730 // In-progress download termination handling:
 731
 732 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 733   if (cancel_downloads) {
 734     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 735     chrome::CloseWindow(this);
 736     return;
 737   }
 738
 739   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 740   // close again we'll show the warning again.
 741   cancel_download_confirmation_state_ = NOT_PROMPTED;
 742
 743   // Show the download page so the user can figure-out what downloads are still
 744   // in-progress.
 745   chrome::ShowDownloads(this);
 746
 747   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 748   // prompt every time any tab is closed. http://crbug.com/305516
 749   if (IsFastTabUnloadEnabled())
 750     fast_unload_controller_->CancelWindowClose();
 751   else
 752     unload_controller_->CancelWindowClose();
 753 }
 754
 755 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 756     int* num_downloads_blocking) const {
 757   DCHECK(num_downloads_blocking);
 758   *num_downloads_blocking = 0;
 759
 760   // If we're not running a full browser process with a profile manager
 761   // (testing), it's ok to close the browser.
 762   if (!g_browser_process->profile_manager())
 763     return DOWNLOAD_CLOSE_OK;
 764
 765   int total_download_count =
 766       DownloadService::NonMaliciousDownloadCountAllProfiles();
 767   if (total_download_count == 0)
 768     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 769
 770   // Figure out how many windows are open total, and associated with this
 771   // profile, that are relevant for the ok-to-close decision.
 772   int profile_window_count = 0;
 773   int total_window_count = 0;
 774   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 775     // Don't count this browser window or any other in the process of closing.
 776     Browser* const browser = *it;
 777     // Window closing may be delayed, and windows that are in the process of
 778     // closing don't count against our totals.
 779     if (browser == this || browser->IsAttemptingToCloseBrowser())
 780       continue;
 781
 782     if (it->profile() == profile())
 783       profile_window_count++;
 784     total_window_count++;
 785   }
 786
 787   // If there aren't any other windows, we're at browser shutdown,
 788   // which would cancel all current downloads.
 789   if (total_window_count == 0) {
 790     *num_downloads_blocking = total_download_count;
 791     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 792   }
 793
 794   // If there aren't any other windows on our profile, and we're an incognito
 795   // profile, and there are downloads associated with that profile,
 796   // those downloads would be cancelled by our window (-> profile) close.
 797   DownloadService* download_service =
 798       DownloadServiceFactory::GetForBrowserContext(profile());
 799   if ((profile_window_count == 0) &&
 800       (download_service->NonMaliciousDownloadCount() > 0) &&
 801       profile()->IsOffTheRecord()) {
 802     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 803     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 804   }
 805
 806   // Those are the only conditions under which we will block shutdown.
 807   return DOWNLOAD_CLOSE_OK;
 808 }
 809
 810 ////////////////////////////////////////////////////////////////////////////////
 811 // Browser, Tab adding/showing functions:
 812
 813 void Browser::WindowFullscreenStateChanged() {
 814   exclusive_access_manager_->fullscreen_controller()
 815       ->WindowFullscreenStateChanged();
 816   command_controller_->FullscreenStateChanged();
 817   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 818 }
 819
 820 ///////////////////////////////////////////////////////////////////////////////
 821 // Browser, Assorted browser commands:
 822
 823 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 824   exclusive_access_manager_->fullscreen_controller()
 825       ->ToggleBrowserFullscreenModeWithExtension(extension_url);
 826 }
 827
 828 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 829   return SupportsWindowFeatureImpl(feature, true);
 830 }
 831
 832 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 833   return SupportsWindowFeatureImpl(feature, false);
 834 }
 835
 836 void Browser::ToggleEncodingAutoDetect() {
 837   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 838   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 839   // If "auto detect" is turned on, then any current override encoding
 840   // is cleared. This also implicitly performs a reload.
 841   // OTOH, if "auto detect" is turned off, we don't change the currently
 842   // active encoding.
 843   if (encoding_auto_detect_.GetValue()) {
 844     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 845     if (contents)
 846       contents->ResetOverrideEncoding();
 847   }
 848 }
 849
 850 void Browser::OverrideEncoding(int encoding_id) {
 851   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 852   const std::string selected_encoding =
 853       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 854   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 855   if (!selected_encoding.empty() && contents)
 856      contents->SetOverrideEncoding(selected_encoding);
 857   // Update the list of recently selected encodings.
 858   std::string new_selected_encoding_list;
 859   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 860         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 861         encoding_id,
 862         &new_selected_encoding_list)) {
 863     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 864                                     new_selected_encoding_list);
 865   }
 866 }
 867
 868 void Browser::OpenFile() {
 869   content::RecordAction(UserMetricsAction("OpenFile"));
 870   select_file_dialog_ = ui::SelectFileDialog::Create(
 871       this, new ChromeSelectFilePolicy(
 872           tab_strip_model_->GetActiveWebContents()));
 873
 874   const base::FilePath directory = profile_->last_selected_directory();
 875
 876   // TODO(beng): figure out how to juggle this.
 877   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 878   ui::SelectFileDialog::FileTypeInfo file_types;
 879   file_types.support_drive = true;
 880   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 881                                   base::string16(),
 882                                   directory,
 883                                   &file_types,
 884                                   0,
 885                                   base::FilePath::StringType(),
 886                                   parent_window,
 887                                   NULL);
 888 }
 889
 890 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 891   if (GetStatusBubble())
 892     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 893 }
 894
 895 ///////////////////////////////////////////////////////////////////////////////
 896
 897 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 898                                          ui::PageTransition transition,
 899                                          bool user_initiated) {
 900   tab_strip_model_->TabNavigating(contents, transition);
 901
 902   bool contents_is_selected =
 903       contents == tab_strip_model_->GetActiveWebContents();
 904   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 905     // Forcibly reset the location bar if the url is going to change in the
 906     // current tab, since otherwise it won't discard any ongoing user edits,
 907     // since it doesn't realize this is a user-initiated action.
 908     window()->GetLocationBar()->Revert();
 909   }
 910
 911   if (GetStatusBubble())
 912     GetStatusBubble()->Hide();
 913
 914   // Update the location bar. This is synchronous. We specifically don't
 915   // update the load state since the load hasn't started yet and updating it
 916   // will put it out of sync with the actual state like whether we're
 917   // displaying a favicon, which controls the throbber. If we updated it here,
 918   // the throbber will show the default favicon for a split second when
 919   // navigating away from the new tab page.
 920   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 921
 922   if (contents_is_selected)
 923     contents->SetInitialFocus();
 924 }
 925
 926 ///////////////////////////////////////////////////////////////////////////////
 927 // Browser, PageNavigator implementation:
 928
 929 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 930   return OpenURLFromTab(NULL, params);
 931 }
 932
 933 ///////////////////////////////////////////////////////////////////////////////
 934 // Browser, TabStripModelObserver implementation:
 935
 936 void Browser::TabInsertedAt(WebContents* contents,
 937                             int index,
 938                             bool foreground) {
 939   SetAsDelegate(contents, true);
 940
 941   if (popup_manager_)
 942     popup_manager_->RegisterWith(contents);
 943
 944   SessionTabHelper* session_tab_helper =
 945       SessionTabHelper::FromWebContents(contents);
 946   session_tab_helper->SetWindowID(session_id());
 947
 948   content::NotificationService::current()->Notify(
 949       chrome::NOTIFICATION_TAB_PARENTED,
 950       content::Source<content::WebContents>(contents),
 951       content::NotificationService::NoDetails());
 952
 953   SyncHistoryWithTabs(index);
 954
 955   // Make sure the loading state is updated correctly, otherwise the throbber
 956   // won't start if the page is loading.
 957   LoadingStateChanged(contents, true);
 958
 959   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 960
 961   SessionService* session_service =
 962       SessionServiceFactory::GetForProfile(profile_);
 963   if (session_service) {
 964     session_service->TabInserted(contents);
 965     int new_active_index = tab_strip_model_->active_index();
 966     if (index < new_active_index)
 967       session_service->SetSelectedTabInWindow(session_id(),
 968                                               new_active_index);
 969   }
 970 }
 971
 972 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 973                            WebContents* contents,
 974                            int index) {
 975   exclusive_access_manager_->OnTabClosing(contents);
 976   SessionService* session_service =
 977       SessionServiceFactory::GetForProfile(profile_);
 978   if (session_service)
 979     session_service->TabClosing(contents);
 980   content::NotificationService::current()->Notify(
 981       chrome::NOTIFICATION_TAB_CLOSING,
 982       content::Source<NavigationController>(&contents->GetController()),
 983       content::NotificationService::NoDetails());
 984
 985   if (popup_manager_)
 986     popup_manager_->UnregisterWith(contents);
 987
 988   // Sever the WebContents' connection back to us.
 989   SetAsDelegate(contents, false);
 990 }
 991
 992 void Browser::TabDetachedAt(WebContents* contents, int index) {
 993   // TabDetachedAt is called before TabStripModel has updated the
 994   // active index.
 995   int old_active_index = tab_strip_model_->active_index();
 996   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 997     SessionService* session_service =
 998         SessionServiceFactory::GetForProfileIfExisting(profile_);
 999     if (session_service)
1000       session_service->SetSelectedTabInWindow(session_id(),
1001                                               old_active_index - 1);
1002   }
1003
1004   if (popup_manager_)
1005     popup_manager_->UnregisterWith(contents);
1006
1007   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1008 }
1009
1010 void Browser::TabDeactivated(WebContents* contents) {
1011   exclusive_access_manager_->OnTabDeactivated(contents);
1012   search_delegate_->OnTabDeactivated(contents);
1013   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
1014
1015   // Save what the user's currently typing, so it can be restored when we
1016   // switch back to this tab.
1017   window_->GetLocationBar()->SaveStateToContents(contents);
1018
1019   if (instant_controller_)
1020     instant_controller_->TabDeactivated(contents);
1021 }
1022
1023 void Browser::ActiveTabChanged(WebContents* old_contents,
1024                                WebContents* new_contents,
1025                                int index,
1026                                int reason) {
1027   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1028
1029   // Update the bookmark state, since the BrowserWindow may query it during
1030   // OnActiveTabChanged() below.
1031   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1032
1033   // Let the BrowserWindow do its handling.  On e.g. views this changes the
1034   // focused object, which should happen before we update the toolbar below,
1035   // since the omnibox expects the correct element to already be focused when it
1036   // is updated.
1037   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1038
1039   exclusive_access_manager_->OnTabDetachedFromView(old_contents);
1040
1041   // Discarded tabs always get reloaded.
1042   if (tab_strip_model_->IsTabDiscarded(index)) {
1043     LOG(WARNING) << "Reloading discarded tab at " << index;
1044     static int reload_count = 0;
1045     UMA_HISTOGRAM_CUSTOM_COUNTS(
1046         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1047     chrome::Reload(this, CURRENT_TAB);
1048   }
1049
1050   // If we have any update pending, do it now.
1051   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1052     ProcessPendingUIUpdates();
1053
1054   // Propagate the profile to the location bar.
1055   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1056
1057   if (chrome::IsInstantExtendedAPIEnabled())
1058     search_delegate_->OnTabActivated(new_contents);
1059
1060   // Update reload/stop state.
1061   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1062
1063   // Update commands to reflect current state.
1064   command_controller_->TabStateChanged();
1065
1066   // Reset the status bubble.
1067   StatusBubble* status_bubble = GetStatusBubble();
1068   if (status_bubble) {
1069     status_bubble->Hide();
1070
1071     // Show the loading state (if any).
1072     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1073         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1074   }
1075
1076   if (HasFindBarController()) {
1077     find_bar_controller_->ChangeWebContents(new_contents);
1078     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
1079   }
1080
1081   // Update sessions (selected tab index and last active time). Don't force
1082   // creation of sessions. If sessions doesn't exist, the change will be picked
1083   // up by sessions when created.
1084   SessionService* session_service =
1085       SessionServiceFactory::GetForProfileIfExisting(profile_);
1086   if (session_service && !tab_strip_model_->closing_all()) {
1087     session_service->SetSelectedTabInWindow(session_id(),
1088                                             tab_strip_model_->active_index());
1089     if (SessionRestore::GetSmartRestoreMode() ==
1090         SessionRestore::SMART_RESTORE_MODE_MRU) {
1091       SessionTabHelper* session_tab_helper =
1092           SessionTabHelper::FromWebContents(new_contents);
1093       session_service->SetLastActiveTime(session_id(),
1094                                          session_tab_helper->session_id(),
1095                                          base::TimeTicks::Now());
1096     }
1097   }
1098
1099   // This needs to be called after notifying SearchDelegate.
1100   if (instant_controller_)
1101     instant_controller_->ActiveTabChanged();
1102
1103   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1104   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1105 }
1106
1107 void Browser::TabMoved(WebContents* contents,
1108                        int from_index,
1109                        int to_index) {
1110   DCHECK(from_index >= 0 && to_index >= 0);
1111   // Notify the history service.
1112   SyncHistoryWithTabs(std::min(from_index, to_index));
1113 }
1114
1115 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1116                             WebContents* old_contents,
1117                             WebContents* new_contents,
1118                             int index) {
1119   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1120   exclusive_access_manager_->OnTabClosing(old_contents);
1121   SessionService* session_service =
1122       SessionServiceFactory::GetForProfile(profile_);
1123   if (session_service)
1124     session_service->TabClosing(old_contents);
1125   TabInsertedAt(new_contents,
1126                 index,
1127                 (index == tab_strip_model_->active_index()));
1128
1129   int entry_count = new_contents->GetController().GetEntryCount();
1130   if (entry_count > 0) {
1131     // Send out notification so that observers are updated appropriately.
1132     new_contents->GetController().NotifyEntryChanged(
1133         new_contents->GetController().GetEntryAtIndex(entry_count - 1));
1134   }
1135
1136   if (session_service) {
1137     // The new_contents may end up with a different navigation stack. Force
1138     // the session service to update itself.
1139     session_service->TabRestored(new_contents,
1140                                  tab_strip_model_->IsTabPinned(index));
1141   }
1142 }
1143
1144 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1145   SessionService* session_service =
1146       SessionServiceFactory::GetForProfileIfExisting(profile());
1147   if (session_service) {
1148     SessionTabHelper* session_tab_helper =
1149         SessionTabHelper::FromWebContents(contents);
1150     session_service->SetPinnedState(session_id(),
1151                                     session_tab_helper->session_id(),
1152                                     tab_strip_model_->IsTabPinned(index));
1153   }
1154 }
1155
1156 void Browser::TabStripEmpty() {
1157   // Close the frame after we return to the message loop (not immediately,
1158   // otherwise it will destroy this object before the stack has a chance to
1159   // cleanly unwind.)
1160   // Note: This will be called several times if TabStripEmpty is called several
1161   //       times. This is because it does not close the window if tabs are
1162   //       still present.
1163   base::MessageLoop::current()->PostTask(
1164       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1165
1166   // Instant may have visible WebContents that need to be detached before the
1167   // window system closes.
1168   instant_controller_.reset();
1169 }
1170
1171 bool Browser::CanOverscrollContent() const {
1172 #if defined(OS_WIN)
1173   // Don't enable overscroll on Windows machines unless they have a touch
1174   // screen as these machines typically don't have a touchpad capable of
1175   // horizontal scrolling. We are purposefully biased towards "no" here,
1176   // so that we don't waste resources capturing screenshots for horizontal
1177   // overscroll navigation unnecessarily.
1178   bool allow_overscroll = ui::IsTouchDevicePresent();
1179 #elif defined(USE_AURA)
1180   bool allow_overscroll = true;
1181 #else
1182   bool allow_overscroll = false;
1183 #endif
1184
1185   if (!allow_overscroll)
1186     return false;
1187
1188   const std::string value =
1189       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
1190           switches::kOverscrollHistoryNavigation);
1191   bool overscroll_enabled = value != "0";
1192   if (!overscroll_enabled)
1193     return false;
1194   if (is_app() || is_devtools() || !is_type_tabbed())
1195     return false;
1196
1197   // The detached bookmark bar has appearance of floating above the
1198   // web-contents. This does not play nicely with overscroll navigation
1199   // gestures. So disable overscroll navigation when the bookmark bar is in the
1200   // detached state and the overscroll effect moves the layers.
1201   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1202     return false;
1203   return true;
1204 }
1205
1206 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1207   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1208   // other pages have committed.
1209   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1210   if (!profile || !source->GetController().GetLastCommittedEntry())
1211     return false;
1212   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1213   return chrome::IsNTPURL(committed_url, profile);
1214 }
1215
1216 void Browser::SetFocusToLocationBar(bool select_all) {
1217   // Two differences between this and FocusLocationBar():
1218   // (1) This doesn't get recorded in user metrics, since it's called
1219   //     internally.
1220   // (2) This checks whether the location bar can be focused, and if not, clears
1221   //     the focus.  FocusLocationBar() is only reached when the location bar is
1222   //     focusable, but this may be reached at other times, e.g. while in
1223   //     fullscreen mode, where we need to leave focus in a consistent state.
1224   window_->SetFocusToLocationBar(select_all);
1225 }
1226
1227 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1228                                      const NativeWebKeyboardEvent& event,
1229                                      bool* is_keyboard_shortcut) {
1230   // Escape exits tabbed fullscreen mode and mouse lock, and possibly others.
1231   // TODO(koz): Write a test for this http://crbug.com/100441.
1232   if (event.windowsKeyCode == 27 &&
1233       exclusive_access_manager_->HandleUserPressedEscape()) {
1234     return true;
1235   }
1236   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1237 }
1238
1239 void Browser::HandleKeyboardEvent(content::WebContents* source,
1240                                   const NativeWebKeyboardEvent& event) {
1241   DevToolsWindow* devtools_window =
1242       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1243   bool handled = false;
1244   if (devtools_window)
1245     handled = devtools_window->ForwardKeyboardEvent(event);
1246
1247   if (!handled)
1248     window()->HandleKeyboardEvent(event);
1249 }
1250
1251 bool Browser::TabsNeedBeforeUnloadFired() {
1252   if (IsFastTabUnloadEnabled())
1253     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1254   return unload_controller_->TabsNeedBeforeUnloadFired();
1255 }
1256
1257 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1258                                     const gfx::Rect& anchor_in_root_view,
1259                                     const base::string16& main_text,
1260                                     const base::string16& sub_text) {
1261   validation_message_bubble_ =
1262       TabDialogs::FromWebContents(web_contents)
1263           ->ShowValidationMessage(anchor_in_root_view, main_text, sub_text);
1264 }
1265
1266 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1267   validation_message_bubble_.reset();
1268 }
1269
1270 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1271                                     const gfx::Rect& anchor_in_root_view) {
1272   if (!validation_message_bubble_)
1273     return;
1274   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1275   if (rwhv) {
1276     validation_message_bubble_->SetPositionRelativeToAnchor(
1277         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1278   }
1279 }
1280
1281 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1282                                     const blink::WebGestureEvent& event) {
1283   // Disable pinch zooming in undocked dev tools window due to poor UX.
1284   if (app_name() == DevToolsWindow::kDevToolsApp)
1285     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1286            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1287            event.type == blink::WebGestureEvent::GesturePinchEnd;
1288
1289   return false;
1290 }
1291
1292 bool Browser::CanDragEnter(content::WebContents* source,
1293                            const content::DropData& data,
1294                            blink::WebDragOperationsMask operations_allowed) {
1295   // Disallow drag-and-drop navigation for Settings windows which do not support
1296   // external navigation.
1297   if ((operations_allowed & blink::WebDragOperationLink) &&
1298       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1299     return false;
1300   }
1301   return true;
1302 }
1303
1304 bool Browser::IsMouseLocked() const {
1305   return exclusive_access_manager_->mouse_lock_controller()->IsMouseLocked();
1306 }
1307
1308 void Browser::OnWindowDidShow() {
1309   if (window_has_shown_)
1310     return;
1311   window_has_shown_ = true;
1312
1313 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1314 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1315   // Measure the latency from startup till the first browser window becomes
1316   // visible.
1317   static bool is_first_browser_window = true;
1318   if (is_first_browser_window &&
1319       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1320     is_first_browser_window = false;
1321     const base::Time process_creation_time =
1322         base::CurrentProcessInfo::CreationTime();
1323
1324     if (!process_creation_time.is_null()) {
1325       UMA_HISTOGRAM_LONG_TIMES(
1326           "Startup.BrowserWindowDisplay",
1327           base::Time::Now() - process_creation_time);
1328     }
1329   }
1330 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1331
1332   // Nothing to do for non-tabbed windows.
1333   if (!is_type_tabbed())
1334     return;
1335
1336   // Show any pending global error bubble.
1337   GlobalErrorService* service =
1338       GlobalErrorServiceFactory::GetForProfile(profile());
1339   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1340   if (error)
1341     error->ShowBubbleView(this);
1342 }
1343
1344 void Browser::ShowFirstRunBubble() {
1345   window()->GetLocationBar()->ShowFirstRunBubble();
1346 }
1347
1348 void Browser::ShowDownload(content::DownloadItem* download) {
1349   if (!window())
1350     return;
1351
1352   // If the download occurs in a new tab, and it's not a save page
1353   // download (started before initial navigation completed) close it.
1354   // Avoid calling CloseContents if the tab is not in this browser's tab strip
1355   // model; this can happen if the download was initiated by something internal
1356   // to Chrome, such as by the app list.
1357   WebContents* source = download->GetWebContents();
1358   if (source && source->GetController().IsInitialNavigation() &&
1359       tab_strip_model_->count() > 1 &&
1360       tab_strip_model_->GetIndexOfWebContents(source) !=
1361           TabStripModel::kNoTab &&
1362       !download->IsSavePackageDownload()) {
1363     CloseContents(source);
1364   }
1365
1366   // Some (app downloads) are not supposed to appear on the shelf.
1367   if (!DownloadItemModel(download).ShouldShowInShelf())
1368     return;
1369
1370   // GetDownloadShelf creates the download shelf if it was not yet created.
1371   window()->GetDownloadShelf()->AddDownload(download);
1372 }
1373
1374 ///////////////////////////////////////////////////////////////////////////////
1375 // Browser, content::WebContentsDelegate implementation:
1376
1377 WebContents* Browser::OpenURLFromTab(WebContents* source,
1378                                      const OpenURLParams& params) {
1379   if (is_devtools()) {
1380     DevToolsWindow* window = DevToolsWindow::AsDevToolsWindow(source);
1381     DCHECK(window);
1382     return window->OpenURLFromTab(source, params);
1383   }
1384
1385   chrome::NavigateParams nav_params(this, params.url, params.transition);
1386   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1387   nav_params.source_contents = source;
1388   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1389   if (params.user_gesture)
1390     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1391   nav_params.user_gesture = params.user_gesture;
1392
1393   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1394   if (source)
1395     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1396
1397   if (popup_blocker_helper) {
1398     if ((params.disposition == NEW_POPUP ||
1399          params.disposition == NEW_FOREGROUND_TAB ||
1400          params.disposition == NEW_BACKGROUND_TAB ||
1401          params.disposition == NEW_WINDOW) &&
1402         !params.user_gesture &&
1403         !base::CommandLine::ForCurrentProcess()->HasSwitch(
1404             switches::kDisablePopupBlocking)) {
1405       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1406                                                 WebWindowFeatures())) {
1407         return NULL;
1408       }
1409     }
1410   }
1411
1412   chrome::Navigate(&nav_params);
1413
1414   return nav_params.target_contents;
1415 }
1416
1417 void Browser::NavigationStateChanged(WebContents* source,
1418                                      content::InvalidateTypes changed_flags) {
1419   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1420   // is fixed.
1421   tracked_objects::ScopedTracker tracking_profile1(
1422       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1423           "466285 Browser::NavigationStateChanged::ScheduleUIUpdate"));
1424   // Only update the UI when something visible has changed.
1425   if (changed_flags)
1426     ScheduleUIUpdate(source, changed_flags);
1427
1428   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1429   // is fixed.
1430   tracked_objects::ScopedTracker tracking_profile2(
1431       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1432           "466285 Browser::NavigationStateChanged::TabStateChanged"));
1433   // We can synchronously update commands since they will only change once per
1434   // navigation, so we don't have to worry about flickering. We do, however,
1435   // need to update the command state early on load to always present usable
1436   // actions in the face of slow-to-commit pages.
1437   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1438                        content::INVALIDATE_TYPE_LOAD))
1439     command_controller_->TabStateChanged();
1440
1441   if (bookmark_app_controller_)
1442     bookmark_app_controller_->UpdateLocationBarVisibility(true);
1443 }
1444
1445 void Browser::VisibleSSLStateChanged(const WebContents* source) {
1446   // When the current tab's SSL state changes, we need to update the URL
1447   // bar to reflect the new state.
1448   DCHECK(source);
1449   if (tab_strip_model_->GetActiveWebContents() == source)
1450     UpdateToolbar(false);
1451 }
1452
1453 void Browser::AddNewContents(WebContents* source,
1454                              WebContents* new_contents,
1455                              WindowOpenDisposition disposition,
1456                              const gfx::Rect& initial_rect,
1457                              bool user_gesture,
1458                              bool* was_blocked) {
1459   chrome::AddWebContents(this, source, new_contents, disposition, initial_rect,
1460                          user_gesture, was_blocked);
1461 }
1462
1463 void Browser::ActivateContents(WebContents* contents) {
1464   tab_strip_model_->ActivateTabAt(
1465       tab_strip_model_->GetIndexOfWebContents(contents), false);
1466   window_->Activate();
1467 }
1468
1469 void Browser::DeactivateContents(WebContents* contents) {
1470   window_->Deactivate();
1471 }
1472
1473 void Browser::LoadingStateChanged(WebContents* source,
1474     bool to_different_document) {
1475   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1476   window_->UpdateTitleBar();
1477
1478   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1479   if (source == selected_contents) {
1480     bool is_loading = source->IsLoading() && to_different_document;
1481     command_controller_->LoadingStateChanged(is_loading, false);
1482     if (GetStatusBubble()) {
1483       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1484           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1485     }
1486   }
1487 }
1488
1489 void Browser::CloseContents(WebContents* source) {
1490   bool can_close_contents;
1491   if (IsFastTabUnloadEnabled())
1492     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1493   else
1494     can_close_contents = unload_controller_->CanCloseContents(source);
1495
1496   if (can_close_contents)
1497     chrome::CloseWebContents(this, source, true);
1498 }
1499
1500 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1501   if (!IsPopupOrPanel(source)) {
1502     NOTREACHED() << "moving invalid browser type";
1503     return;
1504   }
1505   window_->SetBounds(pos);
1506 }
1507
1508 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1509   return is_type_popup();
1510 }
1511
1512 void Browser::UpdateTargetURL(WebContents* source, const GURL& url) {
1513   if (!GetStatusBubble())
1514     return;
1515
1516   if (source == tab_strip_model_->GetActiveWebContents()) {
1517     PrefService* prefs = profile_->GetPrefs();
1518     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1519   }
1520 }
1521
1522 void Browser::ContentsMouseEvent(
1523     WebContents* source, const gfx::Point& location, bool motion) {
1524   if (!GetStatusBubble())
1525     return;
1526
1527   if (source == tab_strip_model_->GetActiveWebContents()) {
1528     GetStatusBubble()->MouseMoved(location, !motion);
1529     if (!motion)
1530       GetStatusBubble()->SetURL(GURL(), std::string());
1531   }
1532 }
1533
1534 void Browser::ContentsZoomChange(bool zoom_in) {
1535   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1536 }
1537
1538 bool Browser::TakeFocus(content::WebContents* source,
1539                         bool reverse) {
1540   content::NotificationService::current()->Notify(
1541       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1542       content::Source<Browser>(this),
1543       content::NotificationService::NoDetails());
1544   return false;
1545 }
1546
1547 gfx::Rect Browser::GetRootWindowResizerRect() const {
1548   return window_->GetRootWindowResizerRect();
1549 }
1550
1551 void Browser::BeforeUnloadFired(WebContents* web_contents,
1552                                 bool proceed,
1553                                 bool* proceed_to_fire_unload) {
1554   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1555         proceed, proceed_to_fire_unload))
1556     return;
1557
1558   if (IsFastTabUnloadEnabled()) {
1559     *proceed_to_fire_unload =
1560         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1561   } else {
1562     *proceed_to_fire_unload =
1563         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1564   }
1565 }
1566
1567 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1568   const content::NavigationEntry* entry =
1569       source->GetController().GetActiveEntry();
1570   if (entry) {
1571     GURL url = entry->GetURL();
1572     GURL virtual_url = entry->GetVirtualURL();
1573     if ((url.SchemeIs(content::kChromeUIScheme) &&
1574         url.host() == chrome::kChromeUINewTabHost) ||
1575         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1576         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1577       return true;
1578     }
1579   }
1580
1581   return chrome::NavEntryIsInstantNTP(source, entry);
1582 }
1583
1584 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1585   DCHECK(source);
1586   chrome::ViewSource(this, source);
1587 }
1588
1589 void Browser::ViewSourceForFrame(WebContents* source,
1590                                  const GURL& frame_url,
1591                                  const content::PageState& frame_page_state) {
1592   DCHECK(source);
1593   chrome::ViewSource(this, source, frame_url, frame_page_state);
1594 }
1595
1596 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1597   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1598                                 source);
1599 }
1600
1601 bool Browser::ShouldCreateWebContents(
1602     WebContents* web_contents,
1603     int route_id,
1604     int main_frame_route_id,
1605     WindowContainerType window_container_type,
1606     const base::string16& frame_name,
1607     const GURL& target_url,
1608     const std::string& partition_id,
1609     content::SessionStorageNamespace* session_storage_namespace) {
1610   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1611     // If a BackgroundContents is created, suppress the normal WebContents.
1612     return !MaybeCreateBackgroundContents(route_id,
1613                                           main_frame_route_id,
1614                                           web_contents,
1615                                           frame_name,
1616                                           target_url,
1617                                           partition_id,
1618                                           session_storage_namespace);
1619   }
1620
1621   return true;
1622 }
1623
1624 void Browser::WebContentsCreated(WebContents* source_contents,
1625                                  int opener_render_frame_id,
1626                                  const base::string16& frame_name,
1627                                  const GURL& target_url,
1628                                  WebContents* new_contents) {
1629   // Adopt the WebContents now, so all observers are in place, as the network
1630   // requests for its initial navigation will start immediately. The WebContents
1631   // will later be inserted into this browser using Browser::Navigate via
1632   // AddNewContents.
1633   TabHelpers::AttachTabHelpers(new_contents);
1634
1635   // Notify.
1636   RetargetingDetails details;
1637   details.source_web_contents = source_contents;
1638   details.source_render_frame_id = opener_render_frame_id;
1639   details.target_url = target_url;
1640   details.target_web_contents = new_contents;
1641   details.not_yet_in_tabstrip = true;
1642   content::NotificationService::current()->Notify(
1643       chrome::NOTIFICATION_RETARGETING,
1644       content::Source<Profile>(profile_),
1645       content::Details<RetargetingDetails>(&details));
1646 }
1647
1648 void Browser::RendererUnresponsive(WebContents* source) {
1649   // Ignore hangs if a tab is blocked.
1650   int index = tab_strip_model_->GetIndexOfWebContents(source);
1651   DCHECK_NE(TabStripModel::kNoTab, index);
1652   if (tab_strip_model_->IsTabBlocked(index))
1653     return;
1654
1655   TabDialogs::FromWebContents(source)->ShowHungRendererDialog();
1656 }
1657
1658 void Browser::RendererResponsive(WebContents* source) {
1659   TabDialogs::FromWebContents(source)->HideHungRendererDialog();
1660 }
1661
1662 void Browser::WorkerCrashed(WebContents* source) {
1663   SimpleAlertInfoBarDelegate::Create(
1664       InfoBarService::FromWebContents(source),
1665       infobars::InfoBarDelegate::kNoIconID,
1666       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1667 }
1668
1669 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1670   if (web_contents == tab_strip_model_->GetActiveWebContents())
1671     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1672 }
1673
1674 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager(
1675     WebContents* source) {
1676   return app_modal::JavaScriptDialogManager::GetInstance();
1677 }
1678
1679 content::ColorChooser* Browser::OpenColorChooser(
1680       WebContents* web_contents,
1681       SkColor initial_color,
1682       const std::vector<content::ColorSuggestion>& suggestions) {
1683   return chrome::ShowColorChooser(web_contents, initial_color);
1684 }
1685
1686 void Browser::RunFileChooser(WebContents* web_contents,
1687                              const content::FileChooserParams& params) {
1688   FileSelectHelper::RunFileChooser(web_contents, params);
1689 }
1690
1691 void Browser::EnumerateDirectory(WebContents* web_contents,
1692                                  int request_id,
1693                                  const base::FilePath& path) {
1694   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1695 }
1696
1697 bool Browser::EmbedsFullscreenWidget() const {
1698   return true;
1699 }
1700
1701 void Browser::EnterFullscreenModeForTab(WebContents* web_contents,
1702                                         const GURL& origin) {
1703   exclusive_access_manager_->fullscreen_controller()->EnterFullscreenModeForTab(
1704       web_contents, origin);
1705 }
1706
1707 void Browser::ExitFullscreenModeForTab(WebContents* web_contents) {
1708   exclusive_access_manager_->fullscreen_controller()->ExitFullscreenModeForTab(
1709       web_contents);
1710 }
1711
1712 bool Browser::IsFullscreenForTabOrPending(
1713     const WebContents* web_contents) const {
1714   return exclusive_access_manager_->fullscreen_controller()
1715       ->IsFullscreenForTabOrPending(web_contents);
1716 }
1717
1718 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1719                                       const std::string& protocol,
1720                                       const GURL& url,
1721                                       bool user_gesture) {
1722   content::BrowserContext* context = web_contents->GetBrowserContext();
1723   if (context->IsOffTheRecord())
1724     return;
1725
1726   ProtocolHandler handler =
1727       ProtocolHandler::CreateProtocolHandler(protocol, url);
1728
1729   ProtocolHandlerRegistry* registry =
1730       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1731   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1732     return;
1733
1734   TabSpecificContentSettings* tab_content_settings =
1735       TabSpecificContentSettings::FromWebContents(web_contents);
1736   if (!user_gesture && window_) {
1737     tab_content_settings->set_pending_protocol_handler(handler);
1738     tab_content_settings->set_previous_protocol_handler(
1739         registry->GetHandlerFor(handler.protocol()));
1740     window_->GetLocationBar()->UpdateContentSettingsIcons();
1741     return;
1742   }
1743
1744   // Make sure content-setting icon is turned off in case the page does
1745   // ungestured and gestured RPH calls.
1746   if (window_) {
1747     tab_content_settings->ClearPendingProtocolHandler();
1748     window_->GetLocationBar()->UpdateContentSettingsIcons();
1749   }
1750
1751   PermissionBubbleManager* bubble_manager =
1752       PermissionBubbleManager::FromWebContents(web_contents);
1753   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1754     bubble_manager->AddRequest(
1755         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1756                                                      url, user_gesture));
1757   } else {
1758     RegisterProtocolHandlerInfoBarDelegate::Create(
1759         InfoBarService::FromWebContents(web_contents), registry, handler);
1760   }
1761 }
1762
1763 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1764                                         const std::string& protocol,
1765                                         const GURL& url,
1766                                         bool user_gesture) {
1767   // user_gesture will be used in case we decide to have confirmation bubble
1768   // for user while un-registering the handler.
1769   content::BrowserContext* context = web_contents->GetBrowserContext();
1770   if (context->IsOffTheRecord())
1771     return;
1772
1773   ProtocolHandler handler =
1774       ProtocolHandler::CreateProtocolHandler(protocol, url);
1775
1776   ProtocolHandlerRegistry* registry =
1777       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1778   registry->RemoveHandler(handler);
1779 }
1780
1781 void Browser::UpdatePreferredSize(WebContents* source,
1782                                   const gfx::Size& pref_size) {
1783   window_->UpdatePreferredSize(source, pref_size);
1784 }
1785
1786 void Browser::ResizeDueToAutoResize(WebContents* source,
1787                                     const gfx::Size& new_size) {
1788   window_->ResizeDueToAutoResize(source, new_size);
1789 }
1790
1791 void Browser::FindReply(WebContents* web_contents,
1792                         int request_id,
1793                         int number_of_matches,
1794                         const gfx::Rect& selection_rect,
1795                         int active_match_ordinal,
1796                         bool final_update) {
1797   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1798   if (!find_tab_helper)
1799     return;
1800
1801   find_tab_helper->HandleFindReply(request_id,
1802                                    number_of_matches,
1803                                    selection_rect,
1804                                    active_match_ordinal,
1805                                    final_update);
1806 }
1807
1808 void Browser::RequestToLockMouse(WebContents* web_contents,
1809                                  bool user_gesture,
1810                                  bool last_unlocked_by_target) {
1811   exclusive_access_manager_->mouse_lock_controller()->RequestToLockMouse(
1812       web_contents, user_gesture, last_unlocked_by_target);
1813 }
1814
1815 void Browser::LostMouseLock() {
1816   exclusive_access_manager_->mouse_lock_controller()->LostMouseLock();
1817 }
1818
1819 void Browser::RequestMediaAccessPermission(
1820     content::WebContents* web_contents,
1821     const content::MediaStreamRequest& request,
1822     const content::MediaResponseCallback& callback) {
1823   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1824 }
1825
1826 bool Browser::CheckMediaAccessPermission(content::WebContents* web_contents,
1827                                          const GURL& security_origin,
1828                                          content::MediaStreamType type) {
1829   return ::CheckMediaAccessPermission(web_contents, security_origin, type);
1830 }
1831
1832 bool Browser::RequestPpapiBrokerPermission(
1833     WebContents* web_contents,
1834     const GURL& url,
1835     const base::FilePath& plugin_path,
1836     const base::Callback<void(bool)>& callback) {
1837   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1838   return true;
1839 }
1840
1841 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1842   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1843   // would disappear on non-NTP pages, resulting in a bigger size for the new
1844   // render view.
1845   gfx::Size size = web_contents->GetContainerBounds().size();
1846   // Don't change render view size if bookmark bar is currently not detached,
1847   // or there's no pending entry, or navigating to a NTP page.
1848   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1849     return size;
1850   const NavigationEntry* pending_entry =
1851       web_contents->GetController().GetPendingEntry();
1852   if (pending_entry &&
1853       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1854     size.Enlarge(
1855         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1856   }
1857   return size;
1858 }
1859
1860 ///////////////////////////////////////////////////////////////////////////////
1861 // Browser, CoreTabHelperDelegate implementation:
1862
1863 void Browser::SwapTabContents(content::WebContents* old_contents,
1864                               content::WebContents* new_contents,
1865                               bool did_start_load,
1866                               bool did_finish_load) {
1867   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1868   DCHECK_NE(TabStripModel::kNoTab, index);
1869   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1870 }
1871
1872 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1873   return chrome::CanReload(this);
1874 }
1875
1876 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1877   return chrome::CanSavePage(this);
1878 }
1879
1880 ///////////////////////////////////////////////////////////////////////////////
1881 // Browser, SearchEngineTabHelperDelegate implementation:
1882
1883 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1884                                        Profile* profile) {
1885   window()->ConfirmAddSearchProvider(template_url, profile);
1886 }
1887
1888 ///////////////////////////////////////////////////////////////////////////////
1889 // Browser, SearchTabHelperDelegate implementation:
1890
1891 void Browser::NavigateOnThumbnailClick(const GURL& url,
1892                                        WindowOpenDisposition disposition,
1893                                        content::WebContents* source_contents) {
1894   DCHECK(source_contents);
1895   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1896   // gets called to handle clicks in the new tab page (to navigate to most
1897   // visited item URLs) and in the search results page (to navigate to
1898   // privileged destinations (e.g. chrome://URLs)).
1899   //
1900   // TODO(kmadhusu): Page transitions to privileged destinations should be
1901   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1902   chrome::NavigateParams params(this, url,
1903                                 ui::PAGE_TRANSITION_AUTO_BOOKMARK);
1904   params.referrer = content::Referrer();
1905   params.source_contents = source_contents;
1906   params.disposition = disposition;
1907   params.is_renderer_initiated = false;
1908   params.initiating_profile = profile_;
1909   chrome::Navigate(&params);
1910 }
1911
1912 void Browser::OnWebContentsInstantSupportDisabled(
1913     const content::WebContents* web_contents) {
1914   DCHECK(web_contents);
1915   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1916     UpdateToolbar(false);
1917 }
1918
1919 OmniboxView* Browser::GetOmniboxView() {
1920   return window_->GetLocationBar()->GetOmniboxView();
1921 }
1922
1923 std::set<std::string> Browser::GetOpenUrls() {
1924   scoped_refptr<history::TopSites> top_sites =
1925       TopSitesFactory::GetForProfile(profile_);
1926   if (!top_sites)  // NULL for Incognito profiles.
1927     return std::set<std::string>();
1928
1929   std::set<std::string> open_urls;
1930   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1931   return open_urls;
1932 }
1933
1934 ///////////////////////////////////////////////////////////////////////////////
1935 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1936
1937 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1938                                     bool blocked) {
1939   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1940   if (index == TabStripModel::kNoTab) {
1941     NOTREACHED();
1942     return;
1943   }
1944   tab_strip_model_->SetTabBlocked(index, blocked);
1945   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1946     web_contents->Focus();
1947 }
1948
1949 web_modal::WebContentsModalDialogHost*
1950 Browser::GetWebContentsModalDialogHost() {
1951   return window_->GetWebContentsModalDialogHost();
1952 }
1953
1954 ///////////////////////////////////////////////////////////////////////////////
1955 // Browser, BookmarkTabHelperDelegate implementation:
1956
1957 void Browser::URLStarredChanged(content::WebContents* web_contents,
1958                                 bool starred) {
1959   if (web_contents == tab_strip_model_->GetActiveWebContents())
1960     window_->SetStarredState(starred);
1961 }
1962
1963 ///////////////////////////////////////////////////////////////////////////////
1964 // Browser, ZoomObserver implementation:
1965
1966 void Browser::OnZoomChanged(
1967     const ui_zoom::ZoomController::ZoomChangedEventData& data) {
1968   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1969     window_->ZoomChangedForActiveTab(data.can_show_bubble);
1970     // Change the zoom commands state based on the zoom state
1971     command_controller_->ZoomStateChanged();
1972   }
1973 }
1974
1975 ///////////////////////////////////////////////////////////////////////////////
1976 // Browser, ui::SelectFileDialog::Listener implementation:
1977
1978 void Browser::FileSelected(const base::FilePath& path, int index,
1979                            void* params) {
1980   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1981 }
1982
1983 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1984                                         int index,
1985                                         void* params) {
1986   profile_->set_last_selected_directory(file_info.file_path.DirName());
1987
1988   GURL url = net::FilePathToFileURL(file_info.local_path);
1989
1990 #if defined(OS_CHROMEOS)
1991   const GURL external_url =
1992       chromeos::CreateExternalFileURLFromPath(profile_, file_info.file_path);
1993   if (!external_url.is_empty())
1994     url = external_url;
1995 #endif
1996
1997   if (url.is_empty())
1998     return;
1999
2000   OpenURL(OpenURLParams(
2001       url, Referrer(), CURRENT_TAB, ui::PAGE_TRANSITION_TYPED, false));
2002 }
2003
2004 ///////////////////////////////////////////////////////////////////////////////
2005 // Browser, content::NotificationObserver implementation:
2006
2007 void Browser::Observe(int type,
2008                       const content::NotificationSource& source,
2009                       const content::NotificationDetails& details) {
2010   switch (type) {
2011     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
2012       Profile* profile = content::Source<Profile>(source).ptr();
2013       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
2014         window()->GetLocationBar()->UpdatePageActions();
2015       break;
2016     }
2017
2018 #if defined(ENABLE_THEMES)
2019     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
2020       window()->UserChangedTheme();
2021       break;
2022 #endif
2023
2024     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
2025       WebContents* web_contents = content::Source<WebContents>(source).ptr();
2026       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
2027         LocationBar* location_bar = window()->GetLocationBar();
2028         if (location_bar)
2029           location_bar->UpdateContentSettingsIcons();
2030       }
2031       break;
2032     }
2033
2034     default:
2035       NOTREACHED() << "Got a notification we didn't register for.";
2036   }
2037 }
2038
2039 #if defined(ENABLE_EXTENSIONS)
2040 ///////////////////////////////////////////////////////////////////////////////
2041 // Browser, extensions::ExtensionRegistryObserver implementation:
2042
2043 void Browser::OnExtensionUninstalled(content::BrowserContext* browser_context,
2044                                      const extensions::Extension* extension,
2045                                      extensions::UninstallReason reason) {
2046   // During window creation on Windows we may end up calling into
2047   // SHAppBarMessage, which internally spawns a nested message loop.This
2048   // makes it possible for us to end up here before window creation has
2049   // completed, at which point window_ is NULL. See 94752 for details.
2050
2051   if (window() && window()->GetLocationBar())
2052     window()->GetLocationBar()->UpdatePageActions();
2053 }
2054
2055 void Browser::OnExtensionLoaded(content::BrowserContext* browser_context,
2056                                 const extensions::Extension* extension) {
2057   command_controller_->ExtensionStateChanged();
2058 }
2059
2060 void Browser::OnExtensionUnloaded(
2061     content::BrowserContext* browser_context,
2062     const extensions::Extension* extension,
2063     extensions::UnloadedExtensionInfo::Reason reason) {
2064   command_controller_->ExtensionStateChanged();
2065   if (window()->GetLocationBar())
2066     window()->GetLocationBar()->UpdatePageActions();
2067
2068   // Close any tabs from the unloaded extension, unless it's terminated,
2069   // in which case let the sad tabs remain.
2070   if (reason != extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
2071     // Iterate backwards as we may remove items while iterating.
2072     for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
2073       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2074       // Two cases are handled here:
2075
2076       // - The scheme check is for when an extension page is loaded in a
2077       // tab, e.g. chrome-extension://id/page.html.
2078       // - The extension_app check is for apps, which can have non-extension
2079       // schemes, e.g. https://mail.google.com if you have the Gmail app
2080       // installed.
2081       if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
2082            web_contents->GetURL().host() == extension->id()) ||
2083           (extensions::TabHelper::FromWebContents(web_contents)
2084                ->extension_app() == extension)) {
2085         tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
2086       }
2087     }
2088   }
2089 }
2090 #endif  // defined(ENABLE_EXTENSIONS)
2091
2092 ///////////////////////////////////////////////////////////////////////////////
2093 // Browser, translate::ContentTranslateDriver::Observer implementation:
2094
2095 void Browser::OnIsPageTranslatedChanged(content::WebContents* source) {
2096   DCHECK(source);
2097   if (tab_strip_model_->GetActiveWebContents() == source) {
2098     window_->SetTranslateIconToggled(
2099         ChromeTranslateClient::FromWebContents(
2100             source)->GetLanguageState().IsPageTranslated());
2101   }
2102 }
2103
2104 void Browser::OnTranslateEnabledChanged(content::WebContents* source) {
2105   DCHECK(source);
2106   if (tab_strip_model_->GetActiveWebContents() == source)
2107     UpdateToolbar(false);
2108 }
2109
2110 ///////////////////////////////////////////////////////////////////////////////
2111 // Browser, Command and state updating (private):
2112
2113 void Browser::OnDevToolsDisabledChanged() {
2114   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2115     content::DevToolsAgentHost::DetachAllClients();
2116 }
2117
2118 ///////////////////////////////////////////////////////////////////////////////
2119 // Browser, UI update coalescing and handling (private):
2120
2121 void Browser::UpdateToolbar(bool should_restore_state) {
2122   window_->UpdateToolbar(should_restore_state ?
2123       tab_strip_model_->GetActiveWebContents() : NULL);
2124 }
2125
2126 void Browser::ScheduleUIUpdate(WebContents* source,
2127                                unsigned changed_flags) {
2128   DCHECK(source);
2129   int index = tab_strip_model_->GetIndexOfWebContents(source);
2130   DCHECK_NE(TabStripModel::kNoTab, index);
2131
2132   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2133   // is fixed.
2134   tracked_objects::ScopedTracker tracking_profile1(
2135       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2136           "466285 Browser::ScheduleUIUpdate::Toolbar"));
2137   // Do some synchronous updates.
2138   if (changed_flags & content::INVALIDATE_TYPE_URL) {
2139     if (source == tab_strip_model_->GetActiveWebContents()) {
2140       // Only update the URL for the current tab. Note that we do not update
2141       // the navigation commands since those would have already been updated
2142       // synchronously by NavigationStateChanged.
2143       UpdateToolbar(false);
2144     } else {
2145       // Clear the saved tab state for the tab that navigated, so that we don't
2146       // restore any user text after the old URL has been invalidated (e.g.,
2147       // after a new navigation commits in that tab while unfocused).
2148       window_->ResetToolbarTabState(source);
2149     }
2150     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2151   }
2152
2153   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2154   // is fixed.
2155   tracked_objects::ScopedTracker tracking_profile2(
2156       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2157           "466285 Browser::ScheduleUIUpdate::TabStripModel"));
2158   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2159     // Update the loading state synchronously. This is so the throbber will
2160     // immediately start/stop, which gives a more snappy feel. We want to do
2161     // this for any tab so they start & stop quickly.
2162     tab_strip_model_->UpdateWebContentsStateAt(
2163         tab_strip_model_->GetIndexOfWebContents(source),
2164         TabStripModelObserver::LOADING_ONLY);
2165     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2166     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2167     // changed_flags.
2168   }
2169
2170   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2171     // To correctly calculate whether the title changed while not loading
2172     // we need to process the update synchronously. This state only matters for
2173     // the TabStripModel, so we notify the TabStripModel now and notify others
2174     // asynchronously.
2175     tab_strip_model_->UpdateWebContentsStateAt(
2176         tab_strip_model_->GetIndexOfWebContents(source),
2177         TabStripModelObserver::TITLE_NOT_LOADING);
2178   }
2179
2180   // If the only updates were synchronously handled above, we're done.
2181   if (changed_flags == 0)
2182     return;
2183
2184   // Save the dirty bits.
2185   scheduled_updates_[source] |= changed_flags;
2186
2187   if (!chrome_updater_factory_.HasWeakPtrs()) {
2188     // No task currently scheduled, start another.
2189     base::MessageLoop::current()->PostDelayedTask(
2190         FROM_HERE,
2191         base::Bind(&Browser::ProcessPendingUIUpdates,
2192                    chrome_updater_factory_.GetWeakPtr()),
2193         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2194   }
2195 }
2196
2197 void Browser::ProcessPendingUIUpdates() {
2198 #ifndef NDEBUG
2199   // Validate that all tabs we have pending updates for exist. This is scary
2200   // because the pending list must be kept in sync with any detached or
2201   // deleted tabs.
2202   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2203        i != scheduled_updates_.end(); ++i) {
2204     bool found = false;
2205     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2206       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2207         found = true;
2208         break;
2209       }
2210     }
2211     DCHECK(found);
2212   }
2213 #endif
2214
2215   chrome_updater_factory_.InvalidateWeakPtrs();
2216
2217   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2218   // is fixed.
2219   tracked_objects::ScopedTracker tracking_profile1(
2220       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2221           "467185 Browser::ProcessPendingUIUpdates1"));
2222
2223   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2224        i != scheduled_updates_.end(); ++i) {
2225     // Do not dereference |contents|, it may be out-of-date!
2226     const WebContents* contents = i->first;
2227     unsigned flags = i->second;
2228
2229     if (contents == tab_strip_model_->GetActiveWebContents()) {
2230       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2231       // is fixed.
2232       tracked_objects::ScopedTracker tracking_profile2(
2233           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2234               "467185 Browser::ProcessPendingUIUpdates2"));
2235
2236       // Updates that only matter when the tab is selected go here.
2237
2238       // Updating the URL happens synchronously in ScheduleUIUpdate.
2239       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2240         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2241             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2242       }
2243
2244       if (flags & (content::INVALIDATE_TYPE_TAB |
2245                    content::INVALIDATE_TYPE_TITLE)) {
2246         window_->UpdateTitleBar();
2247       }
2248     }
2249
2250     // Updates that don't depend upon the selected state go here.
2251     if (flags &
2252         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2253       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2254       // is fixed.
2255       tracked_objects::ScopedTracker tracking_profile3(
2256           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2257               "467185 Browser::ProcessPendingUIUpdates3"));
2258       tab_strip_model_->UpdateWebContentsStateAt(
2259           tab_strip_model_->GetIndexOfWebContents(contents),
2260           TabStripModelObserver::ALL);
2261     }
2262
2263     // Update the bookmark bar. It may happen that the tab is crashed, and if
2264     // so, the bookmark bar should be hidden.
2265     if (flags & content::INVALIDATE_TYPE_TAB) {
2266       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2267       // is fixed.
2268       tracked_objects::ScopedTracker tracking_profile4(
2269           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2270               "467185 Browser::ProcessPendingUIUpdates4"));
2271       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2272     }
2273
2274     // We don't need to process INVALIDATE_STATE, since that's not visible.
2275   }
2276
2277   scheduled_updates_.clear();
2278 }
2279
2280 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2281   if (!contents)
2282     return;
2283
2284   UpdateMap::iterator i = scheduled_updates_.find(contents);
2285   if (i != scheduled_updates_.end())
2286     scheduled_updates_.erase(i);
2287 }
2288
2289 ///////////////////////////////////////////////////////////////////////////////
2290 // Browser, Getters for UI (private):
2291
2292 StatusBubble* Browser::GetStatusBubble() {
2293   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2294   if (chrome::IsRunningInAppMode())
2295     return NULL;
2296
2297   return window_ ? window_->GetStatusBubble() : NULL;
2298 }
2299
2300 ///////////////////////////////////////////////////////////////////////////////
2301 // Browser, Session restore functions (private):
2302
2303 void Browser::SyncHistoryWithTabs(int index) {
2304   SessionService* session_service =
2305       SessionServiceFactory::GetForProfileIfExisting(profile());
2306   if (session_service) {
2307     for (int i = index; i < tab_strip_model_->count(); ++i) {
2308       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2309       if (web_contents) {
2310         SessionTabHelper* session_tab_helper =
2311             SessionTabHelper::FromWebContents(web_contents);
2312         session_service->SetTabIndexInWindow(
2313             session_id(), session_tab_helper->session_id(), i);
2314         session_service->SetPinnedState(
2315             session_id(),
2316             session_tab_helper->session_id(),
2317             tab_strip_model_->IsTabPinned(i));
2318       }
2319     }
2320   }
2321 }
2322
2323 ///////////////////////////////////////////////////////////////////////////////
2324 // Browser, In-progress download termination handling (private):
2325
2326 bool Browser::CanCloseWithInProgressDownloads() {
2327   // If we've prompted, we need to hear from the user before we
2328   // can close.
2329   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2330     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2331
2332   int num_downloads_blocking;
2333   Browser::DownloadClosePreventionType dialog_type =
2334       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2335   if (dialog_type == DOWNLOAD_CLOSE_OK)
2336     return true;
2337
2338   // Closing this window will kill some downloads; prompt to make sure
2339   // that's ok.
2340   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2341   window_->ConfirmBrowserCloseWithPendingDownloads(
2342       num_downloads_blocking,
2343       dialog_type,
2344       false,
2345       base::Bind(&Browser::InProgressDownloadResponse,
2346                  weak_factory_.GetWeakPtr()));
2347
2348   // Return false so the browser does not close.  We'll close if the user
2349   // confirms in the dialog.
2350   return false;
2351 }
2352
2353 ///////////////////////////////////////////////////////////////////////////////
2354 // Browser, Assorted utility functions (private):
2355
2356 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2357   Browser* delegate = set_delegate ? this : NULL;
2358   // WebContents...
2359   web_contents->SetDelegate(delegate);
2360
2361   // ...and all the helpers.
2362   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2363   WebContentsModalDialogManager::FromWebContents(web_contents)->
2364       SetDelegate(delegate);
2365   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2366   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2367   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2368   translate::ContentTranslateDriver& content_translate_driver =
2369       ChromeTranslateClient::FromWebContents(web_contents)->translate_driver();
2370   if (delegate) {
2371     ui_zoom::ZoomController::FromWebContents(web_contents)->AddObserver(this);
2372     content_translate_driver.AddObserver(this);
2373   } else {
2374     ui_zoom::ZoomController::FromWebContents(web_contents)->RemoveObserver(
2375         this);
2376     content_translate_driver.RemoveObserver(this);
2377   }
2378 }
2379
2380 void Browser::CloseFrame() {
2381   window_->Close();
2382 }
2383
2384 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2385                                 int index,
2386                                 DetachType type) {
2387   if (type == DETACH_TYPE_DETACH) {
2388     // Save the current location bar state, but only if the tab being detached
2389     // is the selected tab.  Because saving state can conditionally revert the
2390     // location bar, saving the current tab's location bar state to a
2391     // non-selected tab can corrupt both tabs.
2392     if (contents == tab_strip_model_->GetActiveWebContents()) {
2393       LocationBar* location_bar = window()->GetLocationBar();
2394       if (location_bar)
2395         location_bar->SaveStateToContents(contents);
2396     }
2397
2398     if (!tab_strip_model_->closing_all())
2399       SyncHistoryWithTabs(0);
2400   }
2401
2402   SetAsDelegate(contents, false);
2403   RemoveScheduledUpdatesFor(contents);
2404
2405   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2406     find_bar_controller_->ChangeWebContents(NULL);
2407   }
2408
2409   // Stop observing search model changes for this tab.
2410   search_delegate_->OnTabDetached(contents);
2411
2412   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2413     if (interstitial_observers_[i]->web_contents() != contents)
2414       continue;
2415
2416     delete interstitial_observers_[i];
2417     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2418     return;
2419   }
2420 }
2421
2422 bool Browser::SupportsLocationBar() const {
2423   // Tabbed browser always show a location bar.
2424   if (is_type_tabbed())
2425     return true;
2426
2427   // Non-app windows that aren't tabbed or system windows should always show a
2428   // location bar, unless they are from a trusted source.
2429   if (!is_app())
2430     return !is_trusted_source();
2431
2432   if (bookmark_app_controller_)
2433     return bookmark_app_controller_->SupportsLocationBar();
2434
2435   return false;
2436 }
2437
2438 bool Browser::ShouldUseWebAppFrame() const {
2439   // Only use the web app frame for apps in ash, and only if the web app frame
2440   // is enabled.
2441   if (!is_app())
2442     return false;
2443
2444   if (bookmark_app_controller_)
2445     return bookmark_app_controller_->should_use_web_app_frame();
2446
2447   return false;
2448 }
2449
2450 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2451                                         bool check_fullscreen) const {
2452   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2453
2454   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2455
2456   if (is_type_tabbed())
2457     features |= FEATURE_BOOKMARKBAR;
2458
2459   if (!hide_ui_for_fullscreen) {
2460     if (!is_type_tabbed())
2461       features |= FEATURE_TITLEBAR;
2462
2463     if (is_type_tabbed())
2464       features |= FEATURE_TABSTRIP;
2465
2466     if (is_type_tabbed())
2467       features |= FEATURE_TOOLBAR;
2468
2469     if (SupportsLocationBar())
2470       features |= FEATURE_LOCATIONBAR;
2471
2472     if (ShouldUseWebAppFrame())
2473       features |= FEATURE_WEBAPPFRAME;
2474   }
2475   return !!(features & feature);
2476 }
2477
2478 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2479   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2480   // fixed.
2481   tracked_objects::ScopedTracker tracking_profile1(
2482       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2483           "467185 Browser::UpdateBookmarkBarState1"));
2484   BookmarkBar::State state;
2485   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2486   // mode, unless on the new tab page.
2487   if (profile_->IsGuestSession()) {
2488     state = BookmarkBar::HIDDEN;
2489   } else if (browser_defaults::bookmarks_enabled &&
2490       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2491       !ShouldHideUIForFullscreen()) {
2492     state = BookmarkBar::SHOW;
2493   } else {
2494     // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2495     // is fixed.
2496     tracked_objects::ScopedTracker tracking_profile2(
2497         FROM_HERE_WITH_EXPLICIT_FUNCTION(
2498             "467185 Browser::UpdateBookmarkBarState2"));
2499     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2500     BookmarkTabHelper* bookmark_tab_helper =
2501         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2502     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2503       state = BookmarkBar::DETACHED;
2504     else
2505       state = BookmarkBar::HIDDEN;
2506   }
2507
2508   if (state == bookmark_bar_state_)
2509     return;
2510
2511   bookmark_bar_state_ = state;
2512
2513   if (!window_)
2514     return;  // This is called from the constructor when window_ is NULL.
2515
2516   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2517     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2518     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2519     // end up querying state once they process the tab switch.
2520     return;
2521   }
2522
2523   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2524   // fixed.
2525   tracked_objects::ScopedTracker tracking_profile3(
2526       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2527           "467185 Browser::UpdateBookmarkBarState3"));
2528
2529   bool should_animate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2530   window_->BookmarkBarStateChanged(should_animate ?
2531       BookmarkBar::ANIMATE_STATE_CHANGE :
2532       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2533 }
2534
2535 bool Browser::ShouldHideUIForFullscreen() const {
2536   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2537   // keep the controls in a slide-down panel.
2538   return window_ && window_->ShouldHideUIForFullscreen();
2539 }
2540
2541 bool Browser::MaybeCreateBackgroundContents(
2542     int route_id,
2543     int main_frame_route_id,
2544     WebContents* opener_web_contents,
2545     const base::string16& frame_name,
2546     const GURL& target_url,
2547     const std::string& partition_id,
2548     content::SessionStorageNamespace* session_storage_namespace) {
2549   GURL opener_url = opener_web_contents->GetURL();
2550   ExtensionService* extensions_service =
2551       extensions::ExtensionSystem::Get(profile_)->extension_service();
2552
2553   if (!opener_url.is_valid() ||
2554       frame_name.empty() ||
2555       !extensions_service ||
2556       !extensions_service->is_ready())
2557     return false;
2558
2559   // Only hosted apps have web extents, so this ensures that only hosted apps
2560   // can create BackgroundContents. We don't have to check for background
2561   // permission as that is checked in RenderMessageFilter when the CreateWindow
2562   // message is processed.
2563   const Extension* extension = extensions::ExtensionRegistry::Get(profile_)
2564                                    ->enabled_extensions()
2565                                    .GetHostedAppByURL(opener_url);
2566   if (!extension)
2567     return false;
2568
2569   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2570   BackgroundContentsService* service =
2571       BackgroundContentsServiceFactory::GetForProfile(profile_);
2572   if (!service)
2573     return false;
2574
2575   // Ensure that we're trying to open this from the extension's process.
2576   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2577   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2578   if (!opener_site_instance->GetProcess() ||
2579       !process_map->Contains(
2580           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2581     return false;
2582   }
2583
2584   // Only allow a single background contents per app.
2585   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2586   BackgroundContents* existing =
2587       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2588   if (existing) {
2589     // For non-scriptable background contents, ignore the request altogether,
2590     // (returning true, so that a regular WebContents isn't created either).
2591     if (!allow_js_access)
2592       return true;
2593     // For scriptable background pages, if one already exists, close it (even
2594     // if it was specified in the manifest).
2595     delete existing;
2596   }
2597
2598   // If script access is not allowed, create the the background contents in a
2599   // new SiteInstance, so that a separate process is used.
2600   scoped_refptr<content::SiteInstance> site_instance =
2601       allow_js_access ?
2602       opener_site_instance :
2603       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2604
2605   // Passed all the checks, so this should be created as a BackgroundContents.
2606   BackgroundContents* contents =
2607       service->CreateBackgroundContents(site_instance.get(),
2608                                         route_id,
2609                                         main_frame_route_id,
2610                                         profile_,
2611                                         frame_name,
2612                                         base::ASCIIToUTF16(extension->id()),
2613                                         partition_id,
2614                                         session_storage_namespace);
2615
2616   // When a separate process is used, the original renderer cannot access the
2617   // new window later, thus we need to navigate the window now.
2618   if (contents && !allow_js_access) {
2619     contents->web_contents()->GetController().LoadURL(
2620         target_url,
2621         content::Referrer(),
2622         ui::PAGE_TRANSITION_LINK,
2623         std::string());  // No extra headers.
2624   }
2625
2626   return contents != NULL;
2627 }