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/path_service.h"
  21 #include "base/prefs/pref_service.h"
  22 #include "base/process/process_info.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_service.h"
  34 #include "chrome/browser/background/background_contents_service_factory.h"
  35 #include "chrome/browser/bookmarks/bookmark_model.h"
  36 #include "chrome/browser/bookmarks/bookmark_utils.h"
  37 #include "chrome/browser/browser_process.h"
  38 #include "chrome/browser/browser_shutdown.h"
  39 #include "chrome/browser/character_encoding.h"
  40 #include "chrome/browser/chrome_notification_types.h"
  41 #include "chrome/browser/chrome_page_zoom.h"
  42 #include "chrome/browser/content_settings/host_content_settings_map.h"
  43 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  44 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  45 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  46 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  47 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  48 #include "chrome/browser/defaults.h"
  49 #include "chrome/browser/devtools/devtools_toggle_action.h"
  50 #include "chrome/browser/devtools/devtools_window.h"
  51 #include "chrome/browser/download/download_item_model.h"
  52 #include "chrome/browser/download/download_service.h"
  53 #include "chrome/browser/download/download_service_factory.h"
  54 #include "chrome/browser/download/download_shelf.h"
  55 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  56 #include "chrome/browser/extensions/extension_service.h"
  57 #include "chrome/browser/extensions/tab_helper.h"
  58 #include "chrome/browser/favicon/favicon_tab_helper.h"
  59 #include "chrome/browser/file_select_helper.h"
  60 #include "chrome/browser/first_run/first_run.h"
  61 #include "chrome/browser/google/google_url_tracker.h"
  62 #include "chrome/browser/infobars/infobar_service.h"
  63 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
  64 #include "chrome/browser/lifetime/application_lifetime.h"
  65 #include "chrome/browser/notifications/notification_ui_manager.h"
  66 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  67 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  68 #include "chrome/browser/profiles/profile.h"
  69 #include "chrome/browser/profiles/profile_destroyer.h"
  70 #include "chrome/browser/profiles/profile_manager.h"
  71 #include "chrome/browser/profiles/profile_metrics.h"
  72 #include "chrome/browser/repost_form_warning_controller.h"
  73 #include "chrome/browser/search/search.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/session_types.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/sync/profile_sync_service.h"
  81 #include "chrome/browser/sync/profile_sync_service_factory.h"
  82 #include "chrome/browser/sync/sync_ui_util.h"
  83 #include "chrome/browser/tab_contents/background_contents.h"
  84 #include "chrome/browser/tab_contents/retargeting_details.h"
  85 #include "chrome/browser/tab_contents/tab_util.h"
  86 #include "chrome/browser/themes/theme_service.h"
  87 #include "chrome/browser/themes/theme_service_factory.h"
  88 #include "chrome/browser/translate/translate_tab_helper.h"
  89 #include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
  90 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
  91 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  92 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  93 #include "chrome/browser/ui/browser_command_controller.h"
  94 #include "chrome/browser/ui/browser_commands.h"
  95 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  96 #include "chrome/browser/ui/browser_content_translate_driver_observer.h"
  97 #include "chrome/browser/ui/browser_dialogs.h"
  98 #include "chrome/browser/ui/browser_finder.h"
  99 #include "chrome/browser/ui/browser_instant_controller.h"
 100 #include "chrome/browser/ui/browser_iterator.h"
 101 #include "chrome/browser/ui/browser_list.h"
 102 #include "chrome/browser/ui/browser_navigator.h"
 103 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 104 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 105 #include "chrome/browser/ui/browser_tabstrip.h"
 106 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 107 #include "chrome/browser/ui/browser_ui_prefs.h"
 108 #include "chrome/browser/ui/browser_window.h"
 109 #include "chrome/browser/ui/chrome_pages.h"
 110 #include "chrome/browser/ui/chrome_select_file_policy.h"
 111 #include "chrome/browser/ui/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/fullscreen/fullscreen_controller.h"
 116 #include "chrome/browser/ui/global_error/global_error.h"
 117 #include "chrome/browser/ui/global_error/global_error_service.h"
 118 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 119 #include "chrome/browser/ui/media_utils.h"
 120 #include "chrome/browser/ui/omnibox/location_bar.h"
 121 #include "chrome/browser/ui/search/search_delegate.h"
 122 #include "chrome/browser/ui/search/search_model.h"
 123 #include "chrome/browser/ui/search/search_tab_helper.h"
 124 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.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_helpers.h"
 130 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 131 #include "chrome/browser/ui/tabs/dock_info.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/toolbar/toolbar_model_impl.h"
 135 #include "chrome/browser/ui/unload_controller.h"
 136 #include "chrome/browser/ui/validation_message_bubble.h"
 137 #include "chrome/browser/ui/web_applications/web_app_ui.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/ui/zoom/zoom_controller.h"
 143 #include "chrome/browser/upgrade_detector.h"
 144 #include "chrome/browser/web_applications/web_app.h"
 145 #include "chrome/common/chrome_constants.h"
 146 #include "chrome/common/chrome_switches.h"
 147 #include "chrome/common/custom_handlers/protocol_handler.h"
 148 #include "chrome/common/net/url_fixer_upper.h"
 149 #include "chrome/common/pref_names.h"
 150 #include "chrome/common/profiling.h"
 151 #include "chrome/common/search_types.h"
 152 #include "chrome/common/url_constants.h"
 153 #include "components/startup_metric_utils/startup_metric_utils.h"
 154 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 155 #include "content/public/browser/devtools_manager.h"
 156 #include "content/public/browser/download_item.h"
 157 #include "content/public/browser/download_manager.h"
 158 #include "content/public/browser/interstitial_page.h"
 159 #include "content/public/browser/invalidate_type.h"
 160 #include "content/public/browser/navigation_controller.h"
 161 #include "content/public/browser/navigation_entry.h"
 162 #include "content/public/browser/notification_details.h"
 163 #include "content/public/browser/notification_service.h"
 164 #include "content/public/browser/plugin_service.h"
 165 #include "content/public/browser/render_process_host.h"
 166 #include "content/public/browser/render_view_host.h"
 167 #include "content/public/browser/render_widget_host_view.h"
 168 #include "content/public/browser/site_instance.h"
 169 #include "content/public/browser/user_metrics.h"
 170 #include "content/public/browser/web_contents.h"
 171 #include "content/public/browser/web_contents_view.h"
 172 #include "content/public/common/content_switches.h"
 173 #include "content/public/common/page_zoom.h"
 174 #include "content/public/common/renderer_preferences.h"
 175 #include "content/public/common/webplugininfo.h"
 176 #include "extensions/browser/extension_prefs.h"
 177 #include "extensions/browser/extension_system.h"
 178 #include "extensions/common/constants.h"
 179 #include "extensions/common/extension.h"
 180 #include "extensions/common/manifest_handlers/background_info.h"
 181 #include "grit/chromium_strings.h"
 182 #include "grit/generated_resources.h"
 183 #include "grit/locale_settings.h"
 184 #include "grit/theme_resources.h"
 185 #include "net/base/net_util.h"
 186 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 187 #include "net/cookies/cookie_monster.h"
 188 #include "net/url_request/url_request_context.h"
 189 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 190 #include "ui/base/l10n/l10n_util.h"
 191 #include "ui/base/window_open_disposition.h"
 192 #include "ui/gfx/point.h"
 193 #include "ui/shell_dialogs/selected_file_info.h"
 194
 195 #if defined(OS_WIN)
 196 #include "base/win/metro.h"
 197 #include "chrome/browser/ssl/ssl_error_info.h"
 198 #include "chrome/browser/task_manager/task_manager.h"
 199 #include "chrome/browser/ui/view_ids.h"
 200 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 201 #include "ui/base/win/shell.h"
 202 #endif  // OS_WIN
 203
 204 #if defined(OS_CHROMEOS)
 205 #include "chrome/browser/chromeos/drive/file_system_util.h"
 206 #endif
 207
 208 #if defined(USE_ASH)
 209 #include "ash/ash_switches.h"
 210 #endif
 211
 212 using base::TimeDelta;
 213 using base::UserMetricsAction;
 214 using content::NativeWebKeyboardEvent;
 215 using content::NavigationController;
 216 using content::NavigationEntry;
 217 using content::OpenURLParams;
 218 using content::PluginService;
 219 using content::Referrer;
 220 using content::RenderWidgetHostView;
 221 using content::SiteInstance;
 222 using content::WebContents;
 223 using extensions::Extension;
 224 using ui::WebDialogDelegate;
 225 using web_modal::WebContentsModalDialogManager;
 226 using blink::WebWindowFeatures;
 227
 228 ///////////////////////////////////////////////////////////////////////////////
 229
 230 namespace {
 231
 232 // How long we wait before updating the browser chrome while loading a page.
 233 const int kUIUpdateCoalescingTimeMS = 200;
 234
 235 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 236   return BrowserWindow::CreateBrowserWindow(browser);
 237 }
 238
 239 // Is the fast tab unload experiment enabled?
 240 bool IsFastTabUnloadEnabled() {
 241   return CommandLine::ForCurrentProcess()->HasSwitch(
 242         switches::kEnableFastUnload);
 243 }
 244
 245 }  // namespace
 246
 247 ////////////////////////////////////////////////////////////////////////////////
 248 // Browser, CreateParams:
 249
 250 Browser::CreateParams::CreateParams(Profile* profile,
 251                                     chrome::HostDesktopType host_desktop_type)
 252     : type(TYPE_TABBED),
 253       profile(profile),
 254       host_desktop_type(host_desktop_type),
 255       app_type(APP_TYPE_HOST),
 256       initial_show_state(ui::SHOW_STATE_DEFAULT),
 257       is_session_restore(false),
 258       window(NULL) {
 259 }
 260
 261 Browser::CreateParams::CreateParams(Type type,
 262                                     Profile* profile,
 263                                     chrome::HostDesktopType host_desktop_type)
 264     : type(type),
 265       profile(profile),
 266       host_desktop_type(host_desktop_type),
 267       app_type(APP_TYPE_HOST),
 268       initial_show_state(ui::SHOW_STATE_DEFAULT),
 269       is_session_restore(false),
 270       window(NULL) {
 271 }
 272
 273 // static
 274 Browser::CreateParams Browser::CreateParams::CreateForApp(
 275     Type type,
 276     const std::string& app_name,
 277     const gfx::Rect& window_bounds,
 278     Profile* profile,
 279     chrome::HostDesktopType host_desktop_type) {
 280   DCHECK(type != TYPE_TABBED);
 281   DCHECK(!app_name.empty());
 282
 283   CreateParams params(type, profile, host_desktop_type);
 284   params.app_name = app_name;
 285   params.app_type = APP_TYPE_CHILD;
 286   params.initial_bounds = window_bounds;
 287
 288   return params;
 289 }
 290
 291 // static
 292 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 293     Profile* profile,
 294     chrome::HostDesktopType host_desktop_type) {
 295   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 296   params.app_name = DevToolsWindow::kDevToolsApp;
 297   return params;
 298 }
 299
 300 ////////////////////////////////////////////////////////////////////////////////
 301 // Browser, InterstitialObserver:
 302
 303 class Browser::InterstitialObserver : public content::WebContentsObserver {
 304  public:
 305   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 306       : WebContentsObserver(web_contents),
 307         browser_(browser) {
 308   }
 309
 310   using content::WebContentsObserver::web_contents;
 311
 312   virtual void DidAttachInterstitialPage() OVERRIDE {
 313     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 314   }
 315
 316   virtual void DidDetachInterstitialPage() OVERRIDE {
 317     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 318   }
 319
 320  private:
 321   Browser* browser_;
 322
 323   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 324 };
 325
 326 ///////////////////////////////////////////////////////////////////////////////
 327 // Browser, Constructors, Creation, Showing:
 328
 329 Browser::Browser(const CreateParams& params)
 330     : type_(params.type),
 331       profile_(params.profile),
 332       window_(NULL),
 333       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 334       tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
 335                                          params.profile)),
 336       app_name_(params.app_name),
 337       app_type_(params.app_type),
 338       cancel_download_confirmation_state_(NOT_PROMPTED),
 339       override_bounds_(params.initial_bounds),
 340       initial_show_state_(params.initial_show_state),
 341       is_session_restore_(params.is_session_restore),
 342       host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
 343           params.host_desktop_type)),
 344       content_setting_bubble_model_delegate_(
 345           new BrowserContentSettingBubbleModelDelegate(this)),
 346       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 347       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 348       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 349       bookmark_bar_state_(BookmarkBar::HIDDEN),
 350       command_controller_(new chrome::BrowserCommandController(
 351           this, g_browser_process->profile_manager())),
 352       window_has_shown_(false),
 353       chrome_updater_factory_(this),
 354       weak_factory_(this),
 355       translate_driver_observer_(
 356           new BrowserContentTranslateDriverObserver(this)) {
 357   // If this causes a crash then a window is being opened using a profile type
 358   // that is disallowed by policy. The crash prevents the disabled window type
 359   // from opening at all, but the path that triggered it should be fixed.
 360   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 361   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 362       << "Only off the record browser may be opened in guest mode";
 363
 364   // TODO(jeremy): Move to initializer list once flag is removed.
 365   if (IsFastTabUnloadEnabled())
 366     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 367   else
 368     unload_controller_.reset(new chrome::UnloadController(this));
 369
 370   if (!app_name_.empty())
 371     chrome::RegisterAppPrefs(app_name_, profile_);
 372   tab_strip_model_->AddObserver(this);
 373
 374   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 375   search_model_.reset(new SearchModel());
 376   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 377
 378   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
 379                  content::Source<Profile>(profile_->GetOriginalProfile()));
 380   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
 381                  content::Source<Profile>(profile_->GetOriginalProfile()));
 382   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
 383                  content::Source<Profile>(profile_->GetOriginalProfile()));
 384   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 385                  content::NotificationService::AllSources());
 386 #if defined(ENABLE_THEMES)
 387   registrar_.Add(
 388       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 389       content::Source<ThemeService>(
 390           ThemeServiceFactory::GetForProfile(profile_)));
 391 #endif
 392   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 393                  content::NotificationService::AllSources());
 394
 395   profile_pref_registrar_.Init(profile_->GetPrefs());
 396   profile_pref_registrar_.Add(
 397       prefs::kDevToolsDisabled,
 398       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 399   profile_pref_registrar_.Add(
 400       prefs::kShowBookmarkBar,
 401       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 402                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 403
 404   BrowserList::AddBrowser(this);
 405
 406   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 407   // or you'll get a nasty surprise when you run the incognito tests.
 408   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 409                              profile_->GetPrefs());
 410
 411   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 412     instant_controller_.reset(new BrowserInstantController(this));
 413
 414   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 415
 416   ProfileMetrics::LogProfileLaunch(profile_);
 417
 418   window_ = params.window ? params.window : CreateBrowserWindow(this);
 419
 420   // Create the extension window controller before sending notifications.
 421   extension_window_controller_.reset(
 422       new BrowserExtensionWindowController(this));
 423
 424   SessionService* session_service =
 425       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 426   if (session_service)
 427     session_service->WindowOpened(this);
 428
 429   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 430   //             replace uses of this with BL's notifications.
 431   content::NotificationService::current()->Notify(
 432       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 433       content::Source<Browser>(this),
 434       content::NotificationService::NoDetails());
 435
 436   // TODO(beng): move to ChromeBrowserMain:
 437   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 438 #if defined(OS_WIN)
 439     // Notify PDM that this is a first run.
 440     ImportAutofillDataWin(
 441         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 442 #endif  // defined(OS_WIN)
 443   }
 444
 445   fullscreen_controller_.reset(new FullscreenController(this));
 446 }
 447
 448 Browser::~Browser() {
 449   // The tab strip should not have any tabs at this point.
 450   if (!browser_shutdown::ShuttingDownWithoutClosingBrowsers())
 451     DCHECK(tab_strip_model_->empty());
 452
 453   tab_strip_model_->RemoveObserver(this);
 454
 455   // Destroy the BrowserCommandController before removing the browser, so that
 456   // it doesn't act on any notifications that are sent as a result of removing
 457   // the browser.
 458   command_controller_.reset();
 459   BrowserList::RemoveBrowser(this);
 460
 461   SessionService* session_service =
 462       SessionServiceFactory::GetForProfile(profile_);
 463   if (session_service)
 464     session_service->WindowClosed(session_id_);
 465
 466   TabRestoreService* tab_restore_service =
 467       TabRestoreServiceFactory::GetForProfile(profile());
 468   if (tab_restore_service)
 469     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 470
 471 #if !defined(OS_MACOSX)
 472   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 473     // We're the last browser window with this profile. We need to nuke the
 474     // TabRestoreService, which will start the shutdown of the
 475     // NavigationControllers and allow for proper shutdown. If we don't do this
 476     // chrome won't shutdown cleanly, and may end up crashing when some
 477     // thread tries to use the IO thread (or another thread) that is no longer
 478     // valid.
 479     // This isn't a valid assumption for Mac OS, as it stays running after
 480     // the last browser has closed. The Mac equivalent is in its app
 481     // controller.
 482     TabRestoreServiceFactory::ResetForProfile(profile_);
 483   }
 484 #endif
 485
 486   profile_pref_registrar_.RemoveAll();
 487
 488   encoding_auto_detect_.Destroy();
 489
 490   // Destroy BrowserExtensionWindowController before the incognito profile
 491   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 492   extension_window_controller_.reset();
 493
 494   // Destroy BrowserInstantController before the incongnito profile is destroyed
 495   // because the InstantController destructor depends on this profile.
 496   instant_controller_.reset();
 497
 498   if (profile_->IsOffTheRecord() &&
 499       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 500     // An incognito profile is no longer needed, this indirectly frees
 501     // its cache and cookies once it gets destroyed at the appropriate time.
 502     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 503   }
 504
 505   // There may be pending file dialogs, we need to tell them that we've gone
 506   // away so they don't try and call back to us.
 507   if (select_file_dialog_.get())
 508     select_file_dialog_->ListenerDestroyed();
 509
 510   int num_downloads;
 511   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 512           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 513       !browser_defaults::kBrowserAliveWithNoWindows) {
 514     DownloadService::CancelAllDownloads();
 515   }
 516 }
 517
 518 ///////////////////////////////////////////////////////////////////////////////
 519 // Getters & Setters
 520
 521 FindBarController* Browser::GetFindBarController() {
 522   if (!find_bar_controller_.get()) {
 523     FindBar* find_bar = window_->CreateFindBar();
 524     find_bar_controller_.reset(new FindBarController(find_bar));
 525     find_bar->SetFindBarController(find_bar_controller_.get());
 526     find_bar_controller_->ChangeWebContents(
 527         tab_strip_model_->GetActiveWebContents());
 528     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 529   }
 530   return find_bar_controller_.get();
 531 }
 532
 533 bool Browser::HasFindBarController() const {
 534   return find_bar_controller_.get() != NULL;
 535 }
 536
 537 bool Browser::is_app() const {
 538   return !app_name_.empty();
 539 }
 540
 541 bool Browser::is_devtools() const {
 542   return app_name_ == DevToolsWindow::kDevToolsApp;
 543 }
 544
 545 ///////////////////////////////////////////////////////////////////////////////
 546 // Browser, State Storage and Retrieval for UI:
 547
 548 gfx::Image Browser::GetCurrentPageIcon() const {
 549   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 550   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 551   // window during the window's creation (before tabs have been added).
 552   FaviconTabHelper* favicon_tab_helper =
 553       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 554   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 555 }
 556
 557 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 558   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 559   base::string16 title;
 560
 561   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 562   // window during the window's creation (before tabs have been added).
 563   if (contents) {
 564     title = contents->GetTitle();
 565     FormatTitleForDisplay(&title);
 566   }
 567   if (title.empty())
 568     title = CoreTabHelper::GetDefaultTitle();
 569
 570 #if defined(OS_MACOSX)
 571   // On Mac, we don't want to suffix the page title with
 572   // the application name.
 573   return title;
 574 #elif defined(USE_ASH)
 575   // On Ash, we don't want to suffix the page title with the application name,
 576   // but on Windows, where USE_ASH can also be true, we still want the prefix
 577   // on desktop.
 578   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 579     return title;
 580 #endif
 581   // Don't append the app name to window titles on app frames and app popups
 582   return is_app() ?
 583       title :
 584       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 585 }
 586
 587 // static
 588 void Browser::FormatTitleForDisplay(base::string16* title) {
 589   size_t current_index = 0;
 590   size_t match_index;
 591   while ((match_index = title->find(L'\n', current_index)) !=
 592          base::string16::npos) {
 593     title->replace(match_index, 1, base::string16());
 594     current_index = match_index;
 595   }
 596 }
 597
 598 ///////////////////////////////////////////////////////////////////////////////
 599 // Browser, OnBeforeUnload handling:
 600
 601 bool Browser::ShouldCloseWindow() {
 602   if (!CanCloseWithInProgressDownloads())
 603     return false;
 604
 605   if (IsFastTabUnloadEnabled())
 606     return fast_unload_controller_->ShouldCloseWindow();
 607   return unload_controller_->ShouldCloseWindow();
 608 }
 609
 610 bool Browser::CallBeforeUnloadHandlers(
 611     const base::Callback<void(bool)>& on_close_confirmed) {
 612   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 613   if (IsFastTabUnloadEnabled()) {
 614     return fast_unload_controller_->CallBeforeUnloadHandlers(
 615         on_close_confirmed);
 616   }
 617   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 618 }
 619
 620 void Browser::ResetBeforeUnloadHandlers() {
 621   cancel_download_confirmation_state_ = NOT_PROMPTED;
 622   if (IsFastTabUnloadEnabled())
 623     fast_unload_controller_->ResetBeforeUnloadHandlers();
 624   else
 625     unload_controller_->ResetBeforeUnloadHandlers();
 626 }
 627
 628 bool Browser::HasCompletedUnloadProcessing() const {
 629   DCHECK(IsFastTabUnloadEnabled());
 630   return fast_unload_controller_->HasCompletedUnloadProcessing();
 631 }
 632
 633 bool Browser::IsAttemptingToCloseBrowser() const {
 634   if (IsFastTabUnloadEnabled())
 635     return fast_unload_controller_->is_attempting_to_close_browser();
 636   return unload_controller_->is_attempting_to_close_browser();
 637 }
 638
 639 void Browser::OnWindowClosing() {
 640   if (!ShouldCloseWindow())
 641     return;
 642
 643   // Application should shutdown on last window close if the user is explicitly
 644   // trying to quit, or if there is nothing keeping the browser alive (such as
 645   // AppController on the Mac, or BackgroundContentsService for background
 646   // pages).
 647   bool should_quit_if_last_browser =
 648       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 649
 650   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 651     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 652
 653   // Don't use GetForProfileIfExisting here, we want to force creation of the
 654   // session service so that user can restore what was open.
 655   SessionService* session_service =
 656       SessionServiceFactory::GetForProfile(profile());
 657   if (session_service)
 658     session_service->WindowClosing(session_id());
 659
 660   TabRestoreService* tab_restore_service =
 661       TabRestoreServiceFactory::GetForProfile(profile());
 662
 663 #if defined(USE_AURA)
 664   if (tab_restore_service && is_app() && !is_devtools())
 665     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 666 #endif
 667
 668   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 669     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 670
 671   // TODO(sky): convert session/tab restore to use notification.
 672   content::NotificationService::current()->Notify(
 673       chrome::NOTIFICATION_BROWSER_CLOSING,
 674       content::Source<Browser>(this),
 675       content::NotificationService::NoDetails());
 676
 677   if (!IsFastTabUnloadEnabled())
 678     tab_strip_model_->CloseAllTabs();
 679 }
 680
 681 ////////////////////////////////////////////////////////////////////////////////
 682 // In-progress download termination handling:
 683
 684 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 685   if (cancel_downloads) {
 686     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 687     chrome::CloseWindow(this);
 688     return;
 689   }
 690
 691   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 692   // close again we'll show the warning again.
 693   cancel_download_confirmation_state_ = NOT_PROMPTED;
 694
 695   // Show the download page so the user can figure-out what downloads are still
 696   // in-progress.
 697   chrome::ShowDownloads(this);
 698 }
 699
 700 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 701     int* num_downloads_blocking) const {
 702   DCHECK(num_downloads_blocking);
 703   *num_downloads_blocking = 0;
 704
 705   // If we're not running a full browser process with a profile manager
 706   // (testing), it's ok to close the browser.
 707   if (!g_browser_process->profile_manager())
 708     return DOWNLOAD_CLOSE_OK;
 709
 710   int total_download_count =
 711       DownloadService::NonMaliciousDownloadCountAllProfiles();
 712   if (total_download_count == 0)
 713     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 714
 715   // Figure out how many windows are open total, and associated with this
 716   // profile, that are relevant for the ok-to-close decision.
 717   int profile_window_count = 0;
 718   int total_window_count = 0;
 719   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 720     // Don't count this browser window or any other in the process of closing.
 721     Browser* const browser = *it;
 722     // Window closing may be delayed, and windows that are in the process of
 723     // closing don't count against our totals.
 724     if (browser == this || browser->IsAttemptingToCloseBrowser())
 725       continue;
 726
 727     if (it->profile() == profile())
 728       profile_window_count++;
 729     total_window_count++;
 730   }
 731
 732   // If there aren't any other windows, we're at browser shutdown,
 733   // which would cancel all current downloads.
 734   if (total_window_count == 0) {
 735     *num_downloads_blocking = total_download_count;
 736     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 737   }
 738
 739   // If there aren't any other windows on our profile, and we're an incognito
 740   // profile, and there are downloads associated with that profile,
 741   // those downloads would be cancelled by our window (-> profile) close.
 742   DownloadService* download_service =
 743       DownloadServiceFactory::GetForBrowserContext(profile());
 744   if ((profile_window_count == 0) &&
 745       (download_service->NonMaliciousDownloadCount() > 0) &&
 746       profile()->IsOffTheRecord()) {
 747     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 748     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 749   }
 750
 751   // Those are the only conditions under which we will block shutdown.
 752   return DOWNLOAD_CLOSE_OK;
 753 }
 754
 755 ////////////////////////////////////////////////////////////////////////////////
 756 // Browser, Tab adding/showing functions:
 757
 758 void Browser::WindowFullscreenStateChanged() {
 759   fullscreen_controller_->WindowFullscreenStateChanged();
 760   command_controller_->FullscreenStateChanged();
 761   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 762 }
 763
 764 void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
 765   // When the current tab's SSL state changes, we need to update the URL
 766   // bar to reflect the new state.
 767   DCHECK(web_contents);
 768   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 769     UpdateToolbar(false);
 770 }
 771
 772 void Browser::OnWebContentsInstantSupportDisabled(
 773     const content::WebContents* web_contents) {
 774   DCHECK(web_contents);
 775   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 776     UpdateToolbar(false);
 777 }
 778
 779 ///////////////////////////////////////////////////////////////////////////////
 780 // Browser, Assorted browser commands:
 781
 782 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 783   fullscreen_controller_->ToggleFullscreenModeWithExtension(extension_url);
 784 }
 785
 786 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 787   return SupportsWindowFeatureImpl(feature, true);
 788 }
 789
 790 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 791   return SupportsWindowFeatureImpl(feature, false);
 792 }
 793
 794 void Browser::ToggleEncodingAutoDetect() {
 795   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 796   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 797   // If "auto detect" is turned on, then any current override encoding
 798   // is cleared. This also implicitly performs a reload.
 799   // OTOH, if "auto detect" is turned off, we don't change the currently
 800   // active encoding.
 801   if (encoding_auto_detect_.GetValue()) {
 802     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 803     if (contents)
 804       contents->ResetOverrideEncoding();
 805   }
 806 }
 807
 808 void Browser::OverrideEncoding(int encoding_id) {
 809   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 810   const std::string selected_encoding =
 811       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 812   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 813   if (!selected_encoding.empty() && contents)
 814      contents->SetOverrideEncoding(selected_encoding);
 815   // Update the list of recently selected encodings.
 816   std::string new_selected_encoding_list;
 817   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 818         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 819         encoding_id,
 820         &new_selected_encoding_list)) {
 821     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 822                                     new_selected_encoding_list);
 823   }
 824 }
 825
 826 void Browser::OpenFile() {
 827   content::RecordAction(UserMetricsAction("OpenFile"));
 828   select_file_dialog_ = ui::SelectFileDialog::Create(
 829       this, new ChromeSelectFilePolicy(
 830           tab_strip_model_->GetActiveWebContents()));
 831
 832   const base::FilePath directory = profile_->last_selected_directory();
 833
 834   // TODO(beng): figure out how to juggle this.
 835   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 836   ui::SelectFileDialog::FileTypeInfo file_types;
 837   file_types.support_drive = true;
 838   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 839                                   base::string16(),
 840                                   directory,
 841                                   &file_types,
 842                                   0,
 843                                   base::FilePath::StringType(),
 844                                   parent_window,
 845                                   NULL);
 846 }
 847
 848 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 849   if (GetStatusBubble())
 850     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 851 }
 852
 853 ///////////////////////////////////////////////////////////////////////////////
 854
 855 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 856                                          content::PageTransition transition,
 857                                          bool user_initiated) {
 858   tab_strip_model_->TabNavigating(contents, transition);
 859
 860   bool contents_is_selected =
 861       contents == tab_strip_model_->GetActiveWebContents();
 862   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 863     // Forcibly reset the location bar if the url is going to change in the
 864     // current tab, since otherwise it won't discard any ongoing user edits,
 865     // since it doesn't realize this is a user-initiated action.
 866     window()->GetLocationBar()->Revert();
 867   }
 868
 869   if (GetStatusBubble())
 870     GetStatusBubble()->Hide();
 871
 872   // Update the location bar. This is synchronous. We specifically don't
 873   // update the load state since the load hasn't started yet and updating it
 874   // will put it out of sync with the actual state like whether we're
 875   // displaying a favicon, which controls the throbber. If we updated it here,
 876   // the throbber will show the default favicon for a split second when
 877   // navigating away from the new tab page.
 878   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 879
 880   if (contents_is_selected)
 881     contents->GetView()->SetInitialFocus();
 882 }
 883
 884 ///////////////////////////////////////////////////////////////////////////////
 885 // Browser, PageNavigator implementation:
 886
 887 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 888   return OpenURLFromTab(NULL, params);
 889 }
 890
 891 ///////////////////////////////////////////////////////////////////////////////
 892 // Browser, TabStripModelObserver implementation:
 893
 894 void Browser::TabInsertedAt(WebContents* contents,
 895                             int index,
 896                             bool foreground) {
 897   SetAsDelegate(contents, this);
 898   SessionTabHelper* session_tab_helper =
 899       SessionTabHelper::FromWebContents(contents);
 900   session_tab_helper->SetWindowID(session_id());
 901
 902   content::NotificationService::current()->Notify(
 903       chrome::NOTIFICATION_TAB_PARENTED,
 904       content::Source<content::WebContents>(contents),
 905       content::NotificationService::NoDetails());
 906
 907   SyncHistoryWithTabs(index);
 908
 909   // Make sure the loading state is updated correctly, otherwise the throbber
 910   // won't start if the page is loading.
 911   LoadingStateChanged(contents);
 912
 913   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 914
 915   SessionService* session_service =
 916       SessionServiceFactory::GetForProfile(profile_);
 917   if (session_service) {
 918     session_service->TabInserted(contents);
 919     int new_active_index = tab_strip_model_->active_index();
 920     if (index < new_active_index)
 921       session_service->SetSelectedTabInWindow(session_id(),
 922                                               new_active_index);
 923   }
 924 }
 925
 926 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 927                            WebContents* contents,
 928                            int index) {
 929   fullscreen_controller_->OnTabClosing(contents);
 930   SessionService* session_service =
 931       SessionServiceFactory::GetForProfile(profile_);
 932   if (session_service)
 933     session_service->TabClosing(contents);
 934   content::NotificationService::current()->Notify(
 935       chrome::NOTIFICATION_TAB_CLOSING,
 936       content::Source<NavigationController>(&contents->GetController()),
 937       content::NotificationService::NoDetails());
 938
 939   // Sever the WebContents' connection back to us.
 940   SetAsDelegate(contents, NULL);
 941 }
 942
 943 void Browser::TabDetachedAt(WebContents* contents, int index) {
 944   // TabDetachedAt is called before TabStripModel has updated the
 945   // active index.
 946   int old_active_index = tab_strip_model_->active_index();
 947   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 948     SessionService* session_service =
 949         SessionServiceFactory::GetForProfileIfExisting(profile_);
 950     if (session_service)
 951       session_service->SetSelectedTabInWindow(session_id(),
 952                                               old_active_index - 1);
 953   }
 954   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 955 }
 956
 957 void Browser::TabDeactivated(WebContents* contents) {
 958   fullscreen_controller_->OnTabDeactivated(contents);
 959   search_delegate_->OnTabDeactivated(contents);
 960   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 961
 962   // Save what the user's currently typing, so it can be restored when we
 963   // switch back to this tab.
 964   window_->GetLocationBar()->SaveStateToContents(contents);
 965
 966   if (instant_controller_)
 967     instant_controller_->TabDeactivated(contents);
 968 }
 969
 970 void Browser::ActiveTabChanged(WebContents* old_contents,
 971                                WebContents* new_contents,
 972                                int index,
 973                                int reason) {
 974   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 975
 976   // Update the bookmark state, since the BrowserWindow may query it during
 977   // OnActiveTabChanged() below.
 978   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
 979
 980   // Let the BrowserWindow do its handling.  On e.g. views this changes the
 981   // focused object, which should happen before we update the toolbar below,
 982   // since the omnibox expects the correct element to already be focused when it
 983   // is updated.
 984   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
 985
 986   fullscreen_controller_->OnTabDetachedFromView(old_contents);
 987
 988   // Discarded tabs always get reloaded.
 989   if (tab_strip_model_->IsTabDiscarded(index)) {
 990     LOG(WARNING) << "Reloading discarded tab at " << index;
 991     static int reload_count = 0;
 992     UMA_HISTOGRAM_CUSTOM_COUNTS(
 993         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
 994     chrome::Reload(this, CURRENT_TAB);
 995   }
 996
 997   // If we have any update pending, do it now.
 998   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
 999     ProcessPendingUIUpdates();
1000
1001   // Propagate the profile to the location bar.
1002   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1003
1004   if (chrome::IsInstantExtendedAPIEnabled())
1005     search_delegate_->OnTabActivated(new_contents);
1006
1007   // Update reload/stop state.
1008   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1009
1010   // Update commands to reflect current state.
1011   command_controller_->TabStateChanged();
1012
1013   // Reset the status bubble.
1014   StatusBubble* status_bubble = GetStatusBubble();
1015   if (status_bubble) {
1016     status_bubble->Hide();
1017
1018     // Show the loading state (if any).
1019     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1020         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1021   }
1022
1023   if (HasFindBarController()) {
1024     find_bar_controller_->ChangeWebContents(new_contents);
1025     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1026   }
1027
1028   // Update sessions. Don't force creation of sessions. If sessions doesn't
1029   // exist, the change will be picked up by sessions when created.
1030   SessionService* session_service =
1031       SessionServiceFactory::GetForProfileIfExisting(profile_);
1032   if (session_service && !tab_strip_model_->closing_all()) {
1033     session_service->SetSelectedTabInWindow(session_id(),
1034                                             tab_strip_model_->active_index());
1035   }
1036
1037   // This needs to be called after notifying SearchDelegate.
1038   if (instant_controller_)
1039     instant_controller_->ActiveTabChanged();
1040
1041   autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
1042       TabActivated();
1043   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1044 }
1045
1046 void Browser::TabMoved(WebContents* contents,
1047                        int from_index,
1048                        int to_index) {
1049   DCHECK(from_index >= 0 && to_index >= 0);
1050   // Notify the history service.
1051   SyncHistoryWithTabs(std::min(from_index, to_index));
1052 }
1053
1054 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1055                             WebContents* old_contents,
1056                             WebContents* new_contents,
1057                             int index) {
1058   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1059   fullscreen_controller_->OnTabClosing(old_contents);
1060   SessionService* session_service =
1061       SessionServiceFactory::GetForProfile(profile_);
1062   if (session_service)
1063     session_service->TabClosing(old_contents);
1064   TabInsertedAt(new_contents,
1065                 index,
1066                 (index == tab_strip_model_->active_index()));
1067
1068   int entry_count = new_contents->GetController().GetEntryCount();
1069   if (entry_count > 0) {
1070     // Send out notification so that observers are updated appropriately.
1071     new_contents->GetController().NotifyEntryChanged(
1072         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1073         entry_count - 1);
1074   }
1075
1076   if (session_service) {
1077     // The new_contents may end up with a different navigation stack. Force
1078     // the session service to update itself.
1079     session_service->TabRestored(new_contents,
1080                                  tab_strip_model_->IsTabPinned(index));
1081   }
1082 }
1083
1084 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1085   SessionService* session_service =
1086       SessionServiceFactory::GetForProfileIfExisting(profile());
1087   if (session_service) {
1088     SessionTabHelper* session_tab_helper =
1089         SessionTabHelper::FromWebContents(contents);
1090     session_service->SetPinnedState(session_id(),
1091                                     session_tab_helper->session_id(),
1092                                     tab_strip_model_->IsTabPinned(index));
1093   }
1094 }
1095
1096 void Browser::TabStripEmpty() {
1097   // Close the frame after we return to the message loop (not immediately,
1098   // otherwise it will destroy this object before the stack has a chance to
1099   // cleanly unwind.)
1100   // Note: This will be called several times if TabStripEmpty is called several
1101   //       times. This is because it does not close the window if tabs are
1102   //       still present.
1103   base::MessageLoop::current()->PostTask(
1104       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1105
1106   // Instant may have visible WebContents that need to be detached before the
1107   // window system closes.
1108   instant_controller_.reset();
1109 }
1110
1111 bool Browser::CanOverscrollContent() const {
1112 #if defined(USE_AURA)
1113   bool overscroll_enabled = CommandLine::ForCurrentProcess()->
1114       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
1115   if (!overscroll_enabled)
1116     return false;
1117   if (is_app() || is_devtools() || !is_type_tabbed())
1118     return false;
1119
1120   // The detached bookmark bar has appearance of floating above the
1121   // web-contents. This does not play nicely with overscroll navigation
1122   // gestures. So disable overscroll navigation when the bookmark bar is in the
1123   // detached state.
1124   if (bookmark_bar_state_ == BookmarkBar::DETACHED)
1125     return false;
1126   return true;
1127 #else
1128   return false;
1129 #endif
1130 }
1131
1132 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1133                                      const NativeWebKeyboardEvent& event,
1134                                      bool* is_keyboard_shortcut) {
1135   // Escape exits tabbed fullscreen mode.
1136   // TODO(koz): Write a test for this http://crbug.com/100441.
1137   if (event.windowsKeyCode == 27 &&
1138       fullscreen_controller_->HandleUserPressedEscape()) {
1139     return true;
1140   }
1141   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1142 }
1143
1144 void Browser::HandleKeyboardEvent(content::WebContents* source,
1145                                   const NativeWebKeyboardEvent& event) {
1146   window()->HandleKeyboardEvent(event);
1147 }
1148
1149 bool Browser::TabsNeedBeforeUnloadFired() {
1150   if (IsFastTabUnloadEnabled())
1151     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1152   return unload_controller_->TabsNeedBeforeUnloadFired();
1153 }
1154
1155 void Browser::OverscrollUpdate(int delta_y) {
1156   window_->OverscrollUpdate(delta_y);
1157 }
1158
1159 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1160                                     const gfx::Rect& anchor_in_root_view,
1161                                     const base::string16& main_text,
1162                                     const base::string16& sub_text) {
1163   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1164   if (rwhv) {
1165     validation_message_bubble_ =
1166         chrome::ValidationMessageBubble::CreateAndShow(
1167             rwhv->GetRenderWidgetHost(),
1168             anchor_in_root_view,
1169             main_text,
1170             sub_text);
1171   }
1172 }
1173
1174 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1175   validation_message_bubble_.reset();
1176 }
1177
1178 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1179                                     const gfx::Rect& anchor_in_root_view) {
1180   if (!validation_message_bubble_)
1181     return;
1182   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1183   if (rwhv) {
1184     validation_message_bubble_->SetPositionRelativeToAnchor(
1185         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1186   }
1187 }
1188
1189 bool Browser::IsMouseLocked() const {
1190   return fullscreen_controller_->IsMouseLocked();
1191 }
1192
1193 void Browser::OnWindowDidShow() {
1194   if (window_has_shown_)
1195     return;
1196   window_has_shown_ = true;
1197
1198 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1199 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1200   // Measure the latency from startup till the first browser window becomes
1201   // visible.
1202   static bool is_first_browser_window = true;
1203   if (is_first_browser_window &&
1204       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1205     is_first_browser_window = false;
1206     const base::Time process_creation_time =
1207         base::CurrentProcessInfo::CreationTime();
1208
1209     if (!process_creation_time.is_null()) {
1210       UMA_HISTOGRAM_LONG_TIMES(
1211           "Startup.BrowserWindowDisplay",
1212           base::Time::Now() - process_creation_time);
1213     }
1214   }
1215 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1216
1217   // Nothing to do for non-tabbed windows.
1218   if (!is_type_tabbed())
1219     return;
1220
1221   // Show any pending global error bubble.
1222   GlobalErrorService* service =
1223       GlobalErrorServiceFactory::GetForProfile(profile());
1224   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1225   if (error)
1226     error->ShowBubbleView(this);
1227 }
1228
1229 void Browser::ShowFirstRunBubble() {
1230   window()->GetLocationBar()->ShowFirstRunBubble();
1231 }
1232
1233 void Browser::ShowDownload(content::DownloadItem* download) {
1234   if (!window())
1235     return;
1236
1237   // If the download occurs in a new tab, and it's not a save page
1238   // download (started before initial navigation completed) close it.
1239   WebContents* source = download->GetWebContents();
1240   if (source && source->GetController().IsInitialNavigation() &&
1241       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1242     CloseContents(source);
1243   }
1244
1245   // Some (app downloads) are not supposed to appear on the shelf.
1246   if (!DownloadItemModel(download).ShouldShowInShelf())
1247     return;
1248
1249   // GetDownloadShelf creates the download shelf if it was not yet created.
1250   DownloadShelf* shelf = window()->GetDownloadShelf();
1251   shelf->AddDownload(download);
1252 }
1253
1254 ///////////////////////////////////////////////////////////////////////////////
1255 // Browser, content::WebContentsDelegate implementation:
1256
1257 WebContents* Browser::OpenURLFromTab(WebContents* source,
1258                                      const OpenURLParams& params) {
1259   chrome::NavigateParams nav_params(this, params.url, params.transition);
1260   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1261   nav_params.source_contents = source;
1262   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1263   nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1264   nav_params.user_gesture = params.user_gesture;
1265
1266   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1267   if (source)
1268     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1269
1270   if (popup_blocker_helper) {
1271     if ((params.disposition == NEW_POPUP ||
1272          params.disposition == NEW_FOREGROUND_TAB ||
1273          params.disposition == NEW_BACKGROUND_TAB ||
1274          params.disposition == NEW_WINDOW) &&
1275         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1276                                     switches::kDisablePopupBlocking)) {
1277       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1278                                                 WebWindowFeatures())) {
1279         return NULL;
1280       }
1281     }
1282   }
1283
1284   chrome::Navigate(&nav_params);
1285
1286   return nav_params.target_contents;
1287 }
1288
1289 void Browser::NavigationStateChanged(const WebContents* source,
1290                                      unsigned changed_flags) {
1291   // Only update the UI when something visible has changed.
1292   if (changed_flags)
1293     ScheduleUIUpdate(source, changed_flags);
1294
1295   // We can synchronously update commands since they will only change once per
1296   // navigation, so we don't have to worry about flickering. We do, however,
1297   // need to update the command state early on load to always present usable
1298   // actions in the face of slow-to-commit pages.
1299   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1300                        content::INVALIDATE_TYPE_LOAD))
1301     command_controller_->TabStateChanged();
1302 }
1303
1304 void Browser::AddNewContents(WebContents* source,
1305                              WebContents* new_contents,
1306                              WindowOpenDisposition disposition,
1307                              const gfx::Rect& initial_pos,
1308                              bool user_gesture,
1309                              bool* was_blocked) {
1310   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1311                          user_gesture, was_blocked);
1312 }
1313
1314 void Browser::ActivateContents(WebContents* contents) {
1315   tab_strip_model_->ActivateTabAt(
1316       tab_strip_model_->GetIndexOfWebContents(contents), false);
1317   window_->Activate();
1318 }
1319
1320 void Browser::DeactivateContents(WebContents* contents) {
1321   window_->Deactivate();
1322 }
1323
1324 void Browser::LoadingStateChanged(WebContents* source) {
1325   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1326   window_->UpdateTitleBar();
1327
1328   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1329   if (source == selected_contents) {
1330     bool is_loading = source->IsLoading();
1331     command_controller_->LoadingStateChanged(is_loading, false);
1332     if (GetStatusBubble()) {
1333       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1334           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1335     }
1336   }
1337 }
1338
1339 void Browser::CloseContents(WebContents* source) {
1340   bool can_close_contents;
1341   if (IsFastTabUnloadEnabled())
1342     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1343   else
1344     can_close_contents = unload_controller_->CanCloseContents(source);
1345
1346   if (can_close_contents)
1347     chrome::CloseWebContents(this, source, true);
1348 }
1349
1350 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1351   if (!IsPopupOrPanel(source)) {
1352     NOTREACHED() << "moving invalid browser type";
1353     return;
1354   }
1355   window_->SetBounds(pos);
1356 }
1357
1358 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1359   return is_type_popup();
1360 }
1361
1362 void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1363                               const GURL& url) {
1364   if (!GetStatusBubble())
1365     return;
1366
1367   if (source == tab_strip_model_->GetActiveWebContents()) {
1368     PrefService* prefs = profile_->GetPrefs();
1369     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1370   }
1371 }
1372
1373 void Browser::ContentsMouseEvent(
1374     WebContents* source, const gfx::Point& location, bool motion) {
1375   if (!GetStatusBubble())
1376     return;
1377
1378   if (source == tab_strip_model_->GetActiveWebContents()) {
1379     GetStatusBubble()->MouseMoved(location, !motion);
1380     if (!motion)
1381       GetStatusBubble()->SetURL(GURL(), std::string());
1382   }
1383 }
1384
1385 void Browser::ContentsZoomChange(bool zoom_in) {
1386   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1387 }
1388
1389 void Browser::WebContentsFocused(WebContents* contents) {
1390   window_->WebContentsFocused(contents);
1391 }
1392
1393 bool Browser::TakeFocus(content::WebContents* source,
1394                         bool reverse) {
1395   content::NotificationService::current()->Notify(
1396       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1397       content::Source<Browser>(this),
1398       content::NotificationService::NoDetails());
1399   return false;
1400 }
1401
1402 gfx::Rect Browser::GetRootWindowResizerRect() const {
1403   return window_->GetRootWindowResizerRect();
1404 }
1405
1406 void Browser::BeforeUnloadFired(WebContents* web_contents,
1407                                 bool proceed,
1408                                 bool* proceed_to_fire_unload) {
1409   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1410         proceed, proceed_to_fire_unload))
1411     return;
1412
1413   if (IsFastTabUnloadEnabled()) {
1414     *proceed_to_fire_unload =
1415         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1416   } else {
1417     *proceed_to_fire_unload =
1418         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1419   }
1420 }
1421
1422 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1423   const content::NavigationEntry* entry =
1424       source->GetController().GetActiveEntry();
1425   if (entry) {
1426     GURL url = entry->GetURL();
1427     GURL virtual_url = entry->GetVirtualURL();
1428     if ((url.SchemeIs(content::kChromeUIScheme) &&
1429         url.host() == chrome::kChromeUINewTabHost) ||
1430         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1431         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1432       return true;
1433     }
1434   }
1435
1436   return chrome::NavEntryIsInstantNTP(source, entry);
1437 }
1438
1439 void Browser::SetFocusToLocationBar(bool select_all) {
1440   // Two differences between this and FocusLocationBar():
1441   // (1) This doesn't get recorded in user metrics, since it's called
1442   //     internally.
1443   // (2) This checks whether the location bar can be focused, and if not, clears
1444   //     the focus.  FocusLocationBar() is only reached when the location bar is
1445   //     focusable, but this may be reached at other times, e.g. while in
1446   //     fullscreen mode, where we need to leave focus in a consistent state.
1447   window_->SetFocusToLocationBar(select_all);
1448 }
1449
1450 int Browser::GetExtraRenderViewHeight() const {
1451   return window_->GetExtraRenderViewHeight();
1452 }
1453
1454 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1455   DCHECK(source);
1456   chrome::ViewSource(this, source);
1457 }
1458
1459 void Browser::ViewSourceForFrame(WebContents* source,
1460                                  const GURL& frame_url,
1461                                  const content::PageState& frame_page_state) {
1462   DCHECK(source);
1463   chrome::ViewSource(this, source, frame_url, frame_page_state);
1464 }
1465
1466 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1467   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1468                                 source);
1469 }
1470
1471 bool Browser::ShouldCreateWebContents(
1472     WebContents* web_contents,
1473     int route_id,
1474     WindowContainerType window_container_type,
1475     const base::string16& frame_name,
1476     const GURL& target_url,
1477     const std::string& partition_id,
1478     content::SessionStorageNamespace* session_storage_namespace) {
1479   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1480     // If a BackgroundContents is created, suppress the normal WebContents.
1481     return !MaybeCreateBackgroundContents(route_id,
1482                                           web_contents,
1483                                           frame_name,
1484                                           target_url,
1485                                           partition_id,
1486                                           session_storage_namespace);
1487   }
1488
1489   return true;
1490 }
1491
1492 void Browser::WebContentsCreated(WebContents* source_contents,
1493                                  int64 source_frame_id,
1494                                  const base::string16& frame_name,
1495                                  const GURL& target_url,
1496                                  WebContents* new_contents) {
1497   // Adopt the WebContents now, so all observers are in place, as the network
1498   // requests for its initial navigation will start immediately. The WebContents
1499   // will later be inserted into this browser using Browser::Navigate via
1500   // AddNewContents.
1501   TabHelpers::AttachTabHelpers(new_contents);
1502
1503   // Notify.
1504   RetargetingDetails details;
1505   details.source_web_contents = source_contents;
1506   details.source_frame_id = source_frame_id;
1507   details.target_url = target_url;
1508   details.target_web_contents = new_contents;
1509   details.not_yet_in_tabstrip = true;
1510   content::NotificationService::current()->Notify(
1511       chrome::NOTIFICATION_RETARGETING,
1512       content::Source<Profile>(profile_),
1513       content::Details<RetargetingDetails>(&details));
1514 }
1515
1516 void Browser::RendererUnresponsive(WebContents* source) {
1517   // Ignore hangs if a tab is blocked.
1518   int index = tab_strip_model_->GetIndexOfWebContents(source);
1519   DCHECK_NE(TabStripModel::kNoTab, index);
1520   if (tab_strip_model_->IsTabBlocked(index))
1521     return;
1522
1523   chrome::ShowHungRendererDialog(source);
1524 }
1525
1526 void Browser::RendererResponsive(WebContents* source) {
1527   chrome::HideHungRendererDialog(source);
1528 }
1529
1530 void Browser::WorkerCrashed(WebContents* source) {
1531   SimpleAlertInfoBarDelegate::Create(
1532       InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1533       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1534 }
1535
1536 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1537   if (web_contents == tab_strip_model_->GetActiveWebContents())
1538     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1539 }
1540
1541 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1542   if (web_contents == tab_strip_model_->GetActiveWebContents())
1543     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1544 }
1545
1546 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1547   return GetJavaScriptDialogManagerInstance();
1548 }
1549
1550 content::ColorChooser* Browser::OpenColorChooser(
1551       WebContents* web_contents,
1552       SkColor initial_color,
1553       const std::vector<content::ColorSuggestion>& suggestions) {
1554   return chrome::ShowColorChooser(web_contents, initial_color);
1555 }
1556
1557 void Browser::RunFileChooser(WebContents* web_contents,
1558                              const content::FileChooserParams& params) {
1559   FileSelectHelper::RunFileChooser(web_contents, params);
1560 }
1561
1562 void Browser::EnumerateDirectory(WebContents* web_contents,
1563                                  int request_id,
1564                                  const base::FilePath& path) {
1565   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1566 }
1567
1568 bool Browser::EmbedsFullscreenWidget() const {
1569   return CommandLine::ForCurrentProcess()->
1570       HasSwitch(switches::kEmbedFlashFullscreen);
1571 }
1572
1573 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1574                                          bool enter_fullscreen) {
1575   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1576                                                      enter_fullscreen);
1577 }
1578
1579 bool Browser::IsFullscreenForTabOrPending(
1580     const WebContents* web_contents) const {
1581   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1582 }
1583
1584 void Browser::JSOutOfMemory(WebContents* web_contents) {
1585   InfoBarService* infobar_service =
1586       InfoBarService::FromWebContents(web_contents);
1587   if (!infobar_service)
1588     return;
1589   SimpleAlertInfoBarDelegate::Create(
1590       infobar_service, InfoBarDelegate::kNoIconID,
1591       l10n_util::GetStringUTF16(IDS_JS_OUT_OF_MEMORY_PROMPT), true);
1592 }
1593
1594 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1595                                       const std::string& protocol,
1596                                       const GURL& url,
1597                                       const base::string16& title,
1598                                       bool user_gesture) {
1599   Profile* profile =
1600       Profile::FromBrowserContext(web_contents->GetBrowserContext());
1601   if (profile->IsOffTheRecord())
1602     return;
1603
1604   ProtocolHandler handler =
1605       ProtocolHandler::CreateProtocolHandler(protocol, url, title);
1606
1607   ProtocolHandlerRegistry* registry =
1608       ProtocolHandlerRegistryFactory::GetForProfile(profile);
1609   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1610     return;
1611
1612   TabSpecificContentSettings* tab_content_settings =
1613       TabSpecificContentSettings::FromWebContents(web_contents);
1614   if (!user_gesture && window_) {
1615     tab_content_settings->set_pending_protocol_handler(handler);
1616     tab_content_settings->set_previous_protocol_handler(
1617         registry->GetHandlerFor(handler.protocol()));
1618     window_->GetLocationBar()->UpdateContentSettingsIcons();
1619     return;
1620   }
1621
1622   // Make sure content-setting icon is turned off in case the page does
1623   // ungestured and gestured RPH calls.
1624   if (window_) {
1625     tab_content_settings->ClearPendingProtocolHandler();
1626     window_->GetLocationBar()->UpdateContentSettingsIcons();
1627   }
1628
1629   PermissionBubbleManager* bubble_manager =
1630       PermissionBubbleManager::FromWebContents(web_contents);
1631   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1632     bubble_manager->AddRequest(
1633         new RegisterProtocolHandlerPermissionRequest(registry, handler));
1634   } else {
1635     RegisterProtocolHandlerInfoBarDelegate::Create(
1636         InfoBarService::FromWebContents(web_contents), registry, handler);
1637   }
1638 }
1639
1640 void Browser::UpdatePreferredSize(WebContents* source,
1641                                   const gfx::Size& pref_size) {
1642   window_->UpdatePreferredSize(source, pref_size);
1643 }
1644
1645 void Browser::ResizeDueToAutoResize(WebContents* source,
1646                                     const gfx::Size& new_size) {
1647   window_->ResizeDueToAutoResize(source, new_size);
1648 }
1649
1650 void Browser::FindReply(WebContents* web_contents,
1651                         int request_id,
1652                         int number_of_matches,
1653                         const gfx::Rect& selection_rect,
1654                         int active_match_ordinal,
1655                         bool final_update) {
1656   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1657   if (!find_tab_helper)
1658     return;
1659
1660   find_tab_helper->HandleFindReply(request_id,
1661                                    number_of_matches,
1662                                    selection_rect,
1663                                    active_match_ordinal,
1664                                    final_update);
1665 }
1666
1667 void Browser::RequestToLockMouse(WebContents* web_contents,
1668                                  bool user_gesture,
1669                                  bool last_unlocked_by_target) {
1670   fullscreen_controller_->RequestToLockMouse(web_contents,
1671                                              user_gesture,
1672                                              last_unlocked_by_target);
1673 }
1674
1675 void Browser::LostMouseLock() {
1676   fullscreen_controller_->LostMouseLock();
1677 }
1678
1679 void Browser::RequestMediaAccessPermission(
1680     content::WebContents* web_contents,
1681     const content::MediaStreamRequest& request,
1682     const content::MediaResponseCallback& callback) {
1683   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1684 }
1685
1686 bool Browser::RequestPpapiBrokerPermission(
1687     WebContents* web_contents,
1688     const GURL& url,
1689     const base::FilePath& plugin_path,
1690     const base::Callback<void(bool)>& callback) {
1691   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1692   return true;
1693 }
1694
1695 gfx::Size Browser::GetSizeForNewRenderView(
1696     const WebContents* web_contents) const {
1697   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1698   // would disappear on non-NTP pages, resulting in a bigger size for the new
1699   // render view.
1700   gfx::Size size = web_contents->GetView()->GetContainerSize();
1701   // Don't change render view size if bookmark bar is currently not detached,
1702   // or there's no pending entry, or navigating to a NTP page.
1703   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1704     return size;
1705   const NavigationEntry* pending_entry =
1706       web_contents->GetController().GetPendingEntry();
1707   if (pending_entry &&
1708       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1709     size.Enlarge(
1710         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1711   }
1712   return size;
1713 }
1714
1715 ///////////////////////////////////////////////////////////////////////////////
1716 // Browser, CoreTabHelperDelegate implementation:
1717
1718 void Browser::SwapTabContents(content::WebContents* old_contents,
1719                               content::WebContents* new_contents,
1720                               bool did_start_load,
1721                               bool did_finish_load) {
1722   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1723   DCHECK_NE(TabStripModel::kNoTab, index);
1724   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1725 }
1726
1727 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1728   return chrome::CanReload(this);
1729 }
1730
1731 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1732   return chrome::CanSavePage(this);
1733 }
1734
1735 ///////////////////////////////////////////////////////////////////////////////
1736 // Browser, SearchEngineTabHelperDelegate implementation:
1737
1738 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1739                                        Profile* profile) {
1740   window()->ConfirmAddSearchProvider(template_url, profile);
1741 }
1742
1743 ///////////////////////////////////////////////////////////////////////////////
1744 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1745
1746 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1747                                     bool blocked) {
1748   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1749   if (index == TabStripModel::kNoTab) {
1750     NOTREACHED();
1751     return;
1752   }
1753   tab_strip_model_->SetTabBlocked(index, blocked);
1754   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1755     web_contents->GetView()->Focus();
1756 }
1757
1758 web_modal::WebContentsModalDialogHost*
1759 Browser::GetWebContentsModalDialogHost() {
1760   return window_->GetWebContentsModalDialogHost();
1761 }
1762
1763 ///////////////////////////////////////////////////////////////////////////////
1764 // Browser, BookmarkTabHelperDelegate implementation:
1765
1766 void Browser::URLStarredChanged(content::WebContents* web_contents,
1767                                 bool starred) {
1768   if (web_contents == tab_strip_model_->GetActiveWebContents())
1769     window_->SetStarredState(starred);
1770 }
1771
1772 ///////////////////////////////////////////////////////////////////////////////
1773 // Browser, ZoomObserver implementation:
1774
1775 void Browser::OnZoomChanged(content::WebContents* source,
1776                             bool can_show_bubble) {
1777   if (source == tab_strip_model_->GetActiveWebContents()) {
1778     // Only show the zoom bubble for zoom changes in the active window.
1779     window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive() &&
1780         !is_devtools());
1781   }
1782 }
1783
1784 ///////////////////////////////////////////////////////////////////////////////
1785 // Browser, ui::SelectFileDialog::Listener implementation:
1786
1787 void Browser::FileSelected(const base::FilePath& path, int index,
1788                            void* params) {
1789   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1790 }
1791
1792 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1793                                         int index,
1794                                         void* params) {
1795   profile_->set_last_selected_directory(file_info.file_path.DirName());
1796
1797   GURL url = net::FilePathToFileURL(file_info.local_path);
1798
1799 #if defined(OS_CHROMEOS)
1800   drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1801 #endif
1802
1803   if (url.is_empty())
1804     return;
1805
1806   OpenURL(OpenURLParams(
1807       url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1808 }
1809
1810 ///////////////////////////////////////////////////////////////////////////////
1811 // Browser, content::NotificationObserver implementation:
1812
1813 void Browser::Observe(int type,
1814                       const content::NotificationSource& source,
1815                       const content::NotificationDetails& details) {
1816   switch (type) {
1817     case chrome::NOTIFICATION_EXTENSION_UNLOADED: {
1818       if (window()->GetLocationBar())
1819         window()->GetLocationBar()->UpdatePageActions();
1820
1821       const extensions::UnloadedExtensionInfo* extension_info =
1822           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1823
1824       // Close any tabs from the unloaded extension, unless it's terminated,
1825       // in which case let the sad tabs remain.
1826       if (extension_info->reason !=
1827           extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1828         const Extension* extension = extension_info->extension;
1829         // Iterate backwards as we may remove items while iterating.
1830         for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1831           WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1832           // Two cases are handled here:
1833           // - The scheme check is for when an extension page is loaded in a
1834           //   tab, e.g. chrome-extension://id/page.html.
1835           // - The extension_app check is for apps, which can have non-extension
1836           //   schemes, e.g. https://mail.google.com if you have the Gmail app
1837           //   installed.
1838           if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1839                web_contents->GetURL().host() == extension->id()) ||
1840               (extensions::TabHelper::FromWebContents(
1841                    web_contents)->extension_app() == extension)) {
1842             tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1843           }
1844         }
1845       }
1846       break;
1847     }
1848
1849     case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1850       Profile* profile = content::Source<Profile>(source).ptr();
1851       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1852         window()->GetLocationBar()->InvalidatePageActions();
1853       break;
1854     }
1855
1856     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1857     case chrome::NOTIFICATION_EXTENSION_LOADED:
1858       // During window creation on Windows we may end up calling into
1859       // SHAppBarMessage, which internally spawns a nested message loop. This
1860       // makes it possible for us to end up here before window creation has
1861       // completed, at which point window_ is NULL. See 94752 for details.
1862       if (window() && window()->GetLocationBar())
1863         window()->GetLocationBar()->UpdatePageActions();
1864       break;
1865
1866 #if defined(ENABLE_THEMES)
1867     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1868       window()->UserChangedTheme();
1869       break;
1870 #endif
1871
1872     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1873       WebContents* web_contents = content::Source<WebContents>(source).ptr();
1874       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1875         LocationBar* location_bar = window()->GetLocationBar();
1876         if (location_bar)
1877           location_bar->UpdateContentSettingsIcons();
1878       }
1879       break;
1880     }
1881
1882     default:
1883       NOTREACHED() << "Got a notification we didn't register for.";
1884   }
1885 }
1886
1887 ///////////////////////////////////////////////////////////////////////////////
1888 // Browser, Command and state updating (private):
1889
1890 void Browser::OnDevToolsDisabledChanged() {
1891   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1892     content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1893 }
1894
1895 ///////////////////////////////////////////////////////////////////////////////
1896 // Browser, UI update coalescing and handling (private):
1897
1898 void Browser::UpdateToolbar(bool should_restore_state) {
1899   window_->UpdateToolbar(should_restore_state ?
1900       tab_strip_model_->GetActiveWebContents() : NULL);
1901 }
1902
1903 void Browser::ScheduleUIUpdate(const WebContents* source,
1904                                unsigned changed_flags) {
1905   DCHECK(source);
1906   int index = tab_strip_model_->GetIndexOfWebContents(source);
1907   DCHECK_NE(TabStripModel::kNoTab, index);
1908
1909   // Do some synchronous updates.
1910   if (changed_flags & content::INVALIDATE_TYPE_URL &&
1911       source == tab_strip_model_->GetActiveWebContents()) {
1912     // Only update the URL for the current tab. Note that we do not update
1913     // the navigation commands since those would have already been updated
1914     // synchronously by NavigationStateChanged.
1915     UpdateToolbar(false);
1916     changed_flags &= ~content::INVALIDATE_TYPE_URL;
1917   }
1918   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1919     // Update the loading state synchronously. This is so the throbber will
1920     // immediately start/stop, which gives a more snappy feel. We want to do
1921     // this for any tab so they start & stop quickly.
1922     tab_strip_model_->UpdateWebContentsStateAt(
1923         tab_strip_model_->GetIndexOfWebContents(source),
1924         TabStripModelObserver::LOADING_ONLY);
1925     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1926     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1927     // changed_flags.
1928   }
1929
1930   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1931     // To correctly calculate whether the title changed while not loading
1932     // we need to process the update synchronously. This state only matters for
1933     // the TabStripModel, so we notify the TabStripModel now and notify others
1934     // asynchronously.
1935     tab_strip_model_->UpdateWebContentsStateAt(
1936         tab_strip_model_->GetIndexOfWebContents(source),
1937         TabStripModelObserver::TITLE_NOT_LOADING);
1938   }
1939
1940   // If the only updates were synchronously handled above, we're done.
1941   if (changed_flags == 0)
1942     return;
1943
1944   // Save the dirty bits.
1945   scheduled_updates_[source] |= changed_flags;
1946
1947   if (!chrome_updater_factory_.HasWeakPtrs()) {
1948     // No task currently scheduled, start another.
1949     base::MessageLoop::current()->PostDelayedTask(
1950         FROM_HERE,
1951         base::Bind(&Browser::ProcessPendingUIUpdates,
1952                    chrome_updater_factory_.GetWeakPtr()),
1953         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1954   }
1955 }
1956
1957 void Browser::ProcessPendingUIUpdates() {
1958 #ifndef NDEBUG
1959   // Validate that all tabs we have pending updates for exist. This is scary
1960   // because the pending list must be kept in sync with any detached or
1961   // deleted tabs.
1962   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1963        i != scheduled_updates_.end(); ++i) {
1964     bool found = false;
1965     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1966       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1967         found = true;
1968         break;
1969       }
1970     }
1971     DCHECK(found);
1972   }
1973 #endif
1974
1975   chrome_updater_factory_.InvalidateWeakPtrs();
1976
1977   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1978        i != scheduled_updates_.end(); ++i) {
1979     // Do not dereference |contents|, it may be out-of-date!
1980     const WebContents* contents = i->first;
1981     unsigned flags = i->second;
1982
1983     if (contents == tab_strip_model_->GetActiveWebContents()) {
1984       // Updates that only matter when the tab is selected go here.
1985
1986       if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
1987         LocationBar* location_bar = window()->GetLocationBar();
1988         if (location_bar)
1989           location_bar->UpdatePageActions();
1990       }
1991       // Updating the URL happens synchronously in ScheduleUIUpdate.
1992       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
1993         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1994             tab_strip_model_->GetActiveWebContents())->GetStatusText());
1995       }
1996
1997       if (flags & (content::INVALIDATE_TYPE_TAB |
1998                    content::INVALIDATE_TYPE_TITLE)) {
1999         window_->UpdateTitleBar();
2000       }
2001     }
2002
2003     // Updates that don't depend upon the selected state go here.
2004     if (flags &
2005         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2006       tab_strip_model_->UpdateWebContentsStateAt(
2007           tab_strip_model_->GetIndexOfWebContents(contents),
2008           TabStripModelObserver::ALL);
2009     }
2010
2011     // Update the bookmark bar. It may happen that the tab is crashed, and if
2012     // so, the bookmark bar should be hidden.
2013     if (flags & content::INVALIDATE_TYPE_TAB)
2014       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2015
2016     // We don't need to process INVALIDATE_STATE, since that's not visible.
2017   }
2018
2019   scheduled_updates_.clear();
2020 }
2021
2022 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2023   if (!contents)
2024     return;
2025
2026   UpdateMap::iterator i = scheduled_updates_.find(contents);
2027   if (i != scheduled_updates_.end())
2028     scheduled_updates_.erase(i);
2029 }
2030
2031 ///////////////////////////////////////////////////////////////////////////////
2032 // Browser, Getters for UI (private):
2033
2034 StatusBubble* Browser::GetStatusBubble() {
2035   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2036   if (chrome::IsRunningInAppMode())
2037     return NULL;
2038
2039   return window_ ? window_->GetStatusBubble() : NULL;
2040 }
2041
2042 ///////////////////////////////////////////////////////////////////////////////
2043 // Browser, Session restore functions (private):
2044
2045 void Browser::SyncHistoryWithTabs(int index) {
2046   SessionService* session_service =
2047       SessionServiceFactory::GetForProfileIfExisting(profile());
2048   if (session_service) {
2049     for (int i = index; i < tab_strip_model_->count(); ++i) {
2050       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2051       if (web_contents) {
2052         SessionTabHelper* session_tab_helper =
2053             SessionTabHelper::FromWebContents(web_contents);
2054         session_service->SetTabIndexInWindow(
2055             session_id(), session_tab_helper->session_id(), i);
2056         session_service->SetPinnedState(
2057             session_id(),
2058             session_tab_helper->session_id(),
2059             tab_strip_model_->IsTabPinned(i));
2060       }
2061     }
2062   }
2063 }
2064
2065 ///////////////////////////////////////////////////////////////////////////////
2066 // Browser, In-progress download termination handling (private):
2067
2068 bool Browser::CanCloseWithInProgressDownloads() {
2069   // If we've prompted, we need to hear from the user before we
2070   // can close.
2071   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2072     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2073
2074   int num_downloads_blocking;
2075   Browser::DownloadClosePreventionType dialog_type =
2076       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2077   if (dialog_type == DOWNLOAD_CLOSE_OK)
2078     return true;
2079
2080   // Closing this window will kill some downloads; prompt to make sure
2081   // that's ok.
2082   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2083   window_->ConfirmBrowserCloseWithPendingDownloads(
2084       num_downloads_blocking,
2085       dialog_type,
2086       false,
2087       base::Bind(&Browser::InProgressDownloadResponse,
2088                  weak_factory_.GetWeakPtr()));
2089
2090   // Return false so the browser does not close.  We'll close if the user
2091   // confirms in the dialog.
2092   return false;
2093 }
2094
2095 ///////////////////////////////////////////////////////////////////////////////
2096 // Browser, Assorted utility functions (private):
2097
2098 void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2099   // WebContents...
2100   web_contents->SetDelegate(delegate);
2101
2102   // ...and all the helpers.
2103   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2104   WebContentsModalDialogManager::FromWebContents(web_contents)->
2105       SetDelegate(delegate);
2106   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2107   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2108   ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2109   TranslateTabHelper* translate_tab_helper =
2110       TranslateTabHelper::FromWebContents(web_contents);
2111   translate_tab_helper->translate_driver().set_observer(
2112       delegate ? delegate->translate_driver_observer_.get() : NULL);
2113 }
2114
2115 void Browser::CloseFrame() {
2116   window_->Close();
2117 }
2118
2119 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2120                                 int index,
2121                                 DetachType type) {
2122   if (type == DETACH_TYPE_DETACH) {
2123     // Save the current location bar state, but only if the tab being detached
2124     // is the selected tab.  Because saving state can conditionally revert the
2125     // location bar, saving the current tab's location bar state to a
2126     // non-selected tab can corrupt both tabs.
2127     if (contents == tab_strip_model_->GetActiveWebContents()) {
2128       LocationBar* location_bar = window()->GetLocationBar();
2129       if (location_bar)
2130         location_bar->SaveStateToContents(contents);
2131     }
2132
2133     if (!tab_strip_model_->closing_all())
2134       SyncHistoryWithTabs(0);
2135   }
2136
2137   SetAsDelegate(contents, NULL);
2138   RemoveScheduledUpdatesFor(contents);
2139
2140   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2141     find_bar_controller_->ChangeWebContents(NULL);
2142   }
2143
2144   // Stop observing search model changes for this tab.
2145   search_delegate_->OnTabDetached(contents);
2146
2147   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2148     if (interstitial_observers_[i]->web_contents() != contents)
2149       continue;
2150
2151     delete interstitial_observers_[i];
2152     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2153     return;
2154   }
2155 }
2156
2157 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2158                                         bool check_fullscreen) const {
2159   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2160
2161   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2162
2163   if (is_type_tabbed())
2164     features |= FEATURE_BOOKMARKBAR;
2165
2166   if (!hide_ui_for_fullscreen) {
2167     if (!is_type_tabbed())
2168       features |= FEATURE_TITLEBAR;
2169
2170     if (is_type_tabbed())
2171       features |= FEATURE_TABSTRIP;
2172
2173     if (is_type_tabbed())
2174       features |= FEATURE_TOOLBAR;
2175
2176     ExtensionService* service =
2177         extensions::ExtensionSystem::Get(profile_)->extension_service();
2178     const extensions::Extension* extension =
2179         service ? service->GetInstalledExtension(
2180                       web_app::GetExtensionIdFromApplicationName(app_name()))
2181                 : NULL;
2182
2183     if (!is_app() || (app_type() == APP_TYPE_HOST &&
2184                       app_name() != DevToolsWindow::kDevToolsApp &&
2185                       (!extension || !extension->is_legacy_packaged_app()) &&
2186                       CommandLine::ForCurrentProcess()->HasSwitch(
2187                           switches::kEnableStreamlinedHostedApps))) {
2188       features |= FEATURE_LOCATIONBAR;
2189     }
2190   }
2191   return !!(features & feature);
2192 }
2193
2194 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2195   BookmarkBar::State state;
2196   // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2197   if (browser_defaults::bookmarks_enabled &&
2198       profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2199       !ShouldHideUIForFullscreen()) {
2200     state = BookmarkBar::SHOW;
2201   } else {
2202     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2203     BookmarkTabHelper* bookmark_tab_helper =
2204         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2205     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2206       state = BookmarkBar::DETACHED;
2207     else
2208       state = BookmarkBar::HIDDEN;
2209   }
2210
2211   if (state == bookmark_bar_state_)
2212     return;
2213
2214   bookmark_bar_state_ = state;
2215
2216   if (!window_)
2217     return;  // This is called from the constructor when window_ is NULL.
2218
2219   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2220     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2221     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2222     // end up querying state once they process the tab switch.
2223     return;
2224   }
2225
2226   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2227   window_->BookmarkBarStateChanged(shouldAnimate ?
2228       BookmarkBar::ANIMATE_STATE_CHANGE :
2229       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2230 }
2231
2232 bool Browser::ShouldHideUIForFullscreen() const {
2233   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2234   // keep the controls in a slide-down panel.
2235   return window_ && window_->ShouldHideUIForFullscreen();
2236 }
2237
2238 bool Browser::MaybeCreateBackgroundContents(
2239     int route_id,
2240     WebContents* opener_web_contents,
2241     const base::string16& frame_name,
2242     const GURL& target_url,
2243     const std::string& partition_id,
2244     content::SessionStorageNamespace* session_storage_namespace) {
2245   GURL opener_url = opener_web_contents->GetURL();
2246   ExtensionService* extensions_service =
2247       extensions::ExtensionSystem::Get(profile_)->extension_service();
2248
2249   if (!opener_url.is_valid() ||
2250       frame_name.empty() ||
2251       !extensions_service ||
2252       !extensions_service->is_ready())
2253     return false;
2254
2255   // Only hosted apps have web extents, so this ensures that only hosted apps
2256   // can create BackgroundContents. We don't have to check for background
2257   // permission as that is checked in RenderMessageFilter when the CreateWindow
2258   // message is processed.
2259   const Extension* extension =
2260       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2261   if (!extension)
2262     return false;
2263
2264   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2265   BackgroundContentsService* service =
2266       BackgroundContentsServiceFactory::GetForProfile(profile_);
2267   if (!service)
2268     return false;
2269
2270   // Ensure that we're trying to open this from the extension's process.
2271   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2272   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2273   if (!opener_site_instance->GetProcess() ||
2274       !process_map->Contains(
2275           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2276     return false;
2277   }
2278
2279   // Only allow a single background contents per app.
2280   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2281   BackgroundContents* existing =
2282       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2283   if (existing) {
2284     // For non-scriptable background contents, ignore the request altogether,
2285     // (returning true, so that a regular WebContents isn't created either).
2286     if (!allow_js_access)
2287       return true;
2288     // For scriptable background pages, if one already exists, close it (even
2289     // if it was specified in the manifest).
2290     delete existing;
2291   }
2292
2293   // If script access is not allowed, create the the background contents in a
2294   // new SiteInstance, so that a separate process is used.
2295   scoped_refptr<content::SiteInstance> site_instance =
2296       allow_js_access ?
2297       opener_site_instance :
2298       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2299
2300   // Passed all the checks, so this should be created as a BackgroundContents.
2301   BackgroundContents* contents =
2302       service->CreateBackgroundContents(site_instance.get(),
2303                                         route_id,
2304                                         profile_,
2305                                         frame_name,
2306                                         base::ASCIIToUTF16(extension->id()),
2307                                         partition_id,
2308                                         session_storage_namespace);
2309
2310   // When a separate process is used, the original renderer cannot access the
2311   // new window later, thus we need to navigate the window now.
2312   if (contents && !allow_js_access) {
2313     contents->web_contents()->GetController().LoadURL(
2314         target_url,
2315         content::Referrer(),
2316         content::PAGE_TRANSITION_LINK,
2317         std::string());  // No extra headers.
2318   }
2319
2320   return contents != NULL;
2321 }