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/bookmarks/bookmark_utils.h"
  94 #include "chrome/browser/ui/browser_command_controller.h"
  95 #include "chrome/browser/ui/browser_commands.h"
  96 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  97 #include "chrome/browser/ui/browser_content_translate_driver_observer.h"
  98 #include "chrome/browser/ui/browser_dialogs.h"
  99 #include "chrome/browser/ui/browser_finder.h"
 100 #include "chrome/browser/ui/browser_instant_controller.h"
 101 #include "chrome/browser/ui/browser_iterator.h"
 102 #include "chrome/browser/ui/browser_list.h"
 103 #include "chrome/browser/ui/browser_navigator.h"
 104 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 105 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 106 #include "chrome/browser/ui/browser_tabstrip.h"
 107 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 108 #include "chrome/browser/ui/browser_ui_prefs.h"
 109 #include "chrome/browser/ui/browser_window.h"
 110 #include "chrome/browser/ui/chrome_pages.h"
 111 #include "chrome/browser/ui/chrome_select_file_policy.h"
 112 #include "chrome/browser/ui/fast_unload_controller.h"
 113 #include "chrome/browser/ui/find_bar/find_bar.h"
 114 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 115 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 116 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 117 #include "chrome/browser/ui/global_error/global_error.h"
 118 #include "chrome/browser/ui/global_error/global_error_service.h"
 119 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 120 #include "chrome/browser/ui/media_utils.h"
 121 #include "chrome/browser/ui/omnibox/location_bar.h"
 122 #include "chrome/browser/ui/search/search_delegate.h"
 123 #include "chrome/browser/ui/search/search_model.h"
 124 #include "chrome/browser/ui/search/search_tab_helper.h"
 125 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 126 #include "chrome/browser/ui/singleton_tabs.h"
 127 #include "chrome/browser/ui/status_bubble.h"
 128 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 129 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 130 #include "chrome/browser/ui/tab_helpers.h"
 131 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 132 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 133 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 134 #include "chrome/browser/ui/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/website_settings/permission_bubble_manager.h"
 138 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 139 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 140 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 141 #include "chrome/browser/ui/zoom/zoom_controller.h"
 142 #include "chrome/browser/upgrade_detector.h"
 143 #include "chrome/browser/web_applications/web_app.h"
 144 #include "chrome/common/chrome_constants.h"
 145 #include "chrome/common/chrome_switches.h"
 146 #include "chrome/common/custom_handlers/protocol_handler.h"
 147 #include "chrome/common/net/url_fixer_upper.h"
 148 #include "chrome/common/pref_names.h"
 149 #include "chrome/common/profiling.h"
 150 #include "chrome/common/search_types.h"
 151 #include "chrome/common/url_constants.h"
 152 #include "components/startup_metric_utils/startup_metric_utils.h"
 153 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 154 #include "content/public/browser/devtools_manager.h"
 155 #include "content/public/browser/download_item.h"
 156 #include "content/public/browser/download_manager.h"
 157 #include "content/public/browser/interstitial_page.h"
 158 #include "content/public/browser/invalidate_type.h"
 159 #include "content/public/browser/navigation_controller.h"
 160 #include "content/public/browser/navigation_entry.h"
 161 #include "content/public/browser/notification_details.h"
 162 #include "content/public/browser/notification_service.h"
 163 #include "content/public/browser/plugin_service.h"
 164 #include "content/public/browser/render_process_host.h"
 165 #include "content/public/browser/render_view_host.h"
 166 #include "content/public/browser/render_widget_host_view.h"
 167 #include "content/public/browser/site_instance.h"
 168 #include "content/public/browser/user_metrics.h"
 169 #include "content/public/browser/web_contents.h"
 170 #include "content/public/browser/web_contents_view.h"
 171 #include "content/public/common/content_switches.h"
 172 #include "content/public/common/page_zoom.h"
 173 #include "content/public/common/renderer_preferences.h"
 174 #include "content/public/common/webplugininfo.h"
 175 #include "extensions/browser/extension_prefs.h"
 176 #include "extensions/browser/extension_system.h"
 177 #include "extensions/common/constants.h"
 178 #include "extensions/common/extension.h"
 179 #include "extensions/common/manifest_handlers/background_info.h"
 180 #include "grit/chromium_strings.h"
 181 #include "grit/generated_resources.h"
 182 #include "grit/locale_settings.h"
 183 #include "grit/theme_resources.h"
 184 #include "net/base/net_util.h"
 185 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 186 #include "net/cookies/cookie_monster.h"
 187 #include "net/url_request/url_request_context.h"
 188 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 189 #include "ui/base/l10n/l10n_util.h"
 190 #include "ui/base/window_open_disposition.h"
 191 #include "ui/gfx/point.h"
 192 #include "ui/shell_dialogs/selected_file_info.h"
 193
 194 #if defined(OS_WIN)
 195 #include "base/win/metro.h"
 196 #include "chrome/browser/ssl/ssl_error_info.h"
 197 #include "chrome/browser/task_manager/task_manager.h"
 198 #include "chrome/browser/ui/view_ids.h"
 199 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 200 #include "ui/base/win/shell.h"
 201 #endif  // OS_WIN
 202
 203 #if defined(OS_CHROMEOS)
 204 #include "chrome/browser/chromeos/drive/file_system_util.h"
 205 #endif
 206
 207 #if defined(USE_ASH)
 208 #include "ash/ash_switches.h"
 209 #endif
 210
 211 using base::TimeDelta;
 212 using base::UserMetricsAction;
 213 using content::NativeWebKeyboardEvent;
 214 using content::NavigationController;
 215 using content::NavigationEntry;
 216 using content::OpenURLParams;
 217 using content::PluginService;
 218 using content::Referrer;
 219 using content::RenderWidgetHostView;
 220 using content::SiteInstance;
 221 using content::WebContents;
 222 using extensions::Extension;
 223 using ui::WebDialogDelegate;
 224 using web_modal::WebContentsModalDialogManager;
 225 using blink::WebWindowFeatures;
 226
 227 ///////////////////////////////////////////////////////////////////////////////
 228
 229 namespace {
 230
 231 // How long we wait before updating the browser chrome while loading a page.
 232 const int kUIUpdateCoalescingTimeMS = 200;
 233
 234 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 235   return BrowserWindow::CreateBrowserWindow(browser);
 236 }
 237
 238 // Is the fast tab unload experiment enabled?
 239 bool IsFastTabUnloadEnabled() {
 240   return CommandLine::ForCurrentProcess()->HasSwitch(
 241         switches::kEnableFastUnload);
 242 }
 243
 244 }  // namespace
 245
 246 ////////////////////////////////////////////////////////////////////////////////
 247 // Browser, CreateParams:
 248
 249 Browser::CreateParams::CreateParams(Profile* profile,
 250                                     chrome::HostDesktopType host_desktop_type)
 251     : type(TYPE_TABBED),
 252       profile(profile),
 253       host_desktop_type(host_desktop_type),
 254       app_type(APP_TYPE_HOST),
 255       initial_show_state(ui::SHOW_STATE_DEFAULT),
 256       is_session_restore(false),
 257       window(NULL) {
 258 }
 259
 260 Browser::CreateParams::CreateParams(Type type,
 261                                     Profile* profile,
 262                                     chrome::HostDesktopType host_desktop_type)
 263     : type(type),
 264       profile(profile),
 265       host_desktop_type(host_desktop_type),
 266       app_type(APP_TYPE_HOST),
 267       initial_show_state(ui::SHOW_STATE_DEFAULT),
 268       is_session_restore(false),
 269       window(NULL) {
 270 }
 271
 272 // static
 273 Browser::CreateParams Browser::CreateParams::CreateForApp(
 274     Type type,
 275     const std::string& app_name,
 276     const gfx::Rect& window_bounds,
 277     Profile* profile,
 278     chrome::HostDesktopType host_desktop_type) {
 279   DCHECK(type != TYPE_TABBED);
 280   DCHECK(!app_name.empty());
 281
 282   CreateParams params(type, profile, host_desktop_type);
 283   params.app_name = app_name;
 284   params.app_type = APP_TYPE_CHILD;
 285   params.initial_bounds = window_bounds;
 286
 287   return params;
 288 }
 289
 290 // static
 291 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 292     Profile* profile,
 293     chrome::HostDesktopType host_desktop_type) {
 294   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 295   params.app_name = DevToolsWindow::kDevToolsApp;
 296   return params;
 297 }
 298
 299 ////////////////////////////////////////////////////////////////////////////////
 300 // Browser, InterstitialObserver:
 301
 302 class Browser::InterstitialObserver : public content::WebContentsObserver {
 303  public:
 304   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 305       : WebContentsObserver(web_contents),
 306         browser_(browser) {
 307   }
 308
 309   using content::WebContentsObserver::web_contents;
 310
 311   virtual void DidAttachInterstitialPage() OVERRIDE {
 312     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 313   }
 314
 315   virtual void DidDetachInterstitialPage() OVERRIDE {
 316     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 317   }
 318
 319  private:
 320   Browser* browser_;
 321
 322   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 323 };
 324
 325 ///////////////////////////////////////////////////////////////////////////////
 326 // Browser, Constructors, Creation, Showing:
 327
 328 Browser::Browser(const CreateParams& params)
 329     : type_(params.type),
 330       profile_(params.profile),
 331       window_(NULL),
 332       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 333       tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
 334                                          params.profile)),
 335       app_name_(params.app_name),
 336       app_type_(params.app_type),
 337       cancel_download_confirmation_state_(NOT_PROMPTED),
 338       override_bounds_(params.initial_bounds),
 339       initial_show_state_(params.initial_show_state),
 340       is_session_restore_(params.is_session_restore),
 341       host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
 342           params.host_desktop_type)),
 343       content_setting_bubble_model_delegate_(
 344           new BrowserContentSettingBubbleModelDelegate(this)),
 345       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 346       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 347       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 348       bookmark_bar_state_(BookmarkBar::HIDDEN),
 349       command_controller_(new chrome::BrowserCommandController(
 350           this, g_browser_process->profile_manager())),
 351       window_has_shown_(false),
 352       chrome_updater_factory_(this),
 353       weak_factory_(this),
 354       translate_driver_observer_(
 355           new BrowserContentTranslateDriverObserver(this)) {
 356   // If this causes a crash then a window is being opened using a profile type
 357   // that is disallowed by policy. The crash prevents the disabled window type
 358   // from opening at all, but the path that triggered it should be fixed.
 359   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 360   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 361       << "Only off the record browser may be opened in guest mode";
 362
 363   // TODO(jeremy): Move to initializer list once flag is removed.
 364   if (IsFastTabUnloadEnabled())
 365     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 366   else
 367     unload_controller_.reset(new chrome::UnloadController(this));
 368
 369   if (!app_name_.empty())
 370     chrome::RegisterAppPrefs(app_name_, profile_);
 371   tab_strip_model_->AddObserver(this);
 372
 373   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 374   search_model_.reset(new SearchModel());
 375   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 376
 377   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
 378                  content::Source<Profile>(profile_->GetOriginalProfile()));
 379   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 380                  content::Source<Profile>(profile_->GetOriginalProfile()));
 381   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
 382                  content::Source<Profile>(profile_->GetOriginalProfile()));
 383   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 384                  content::NotificationService::AllSources());
 385 #if defined(ENABLE_THEMES)
 386   registrar_.Add(
 387       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 388       content::Source<ThemeService>(
 389           ThemeServiceFactory::GetForProfile(profile_)));
 390 #endif
 391   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 392                  content::NotificationService::AllSources());
 393
 394   profile_pref_registrar_.Init(profile_->GetPrefs());
 395   profile_pref_registrar_.Add(
 396       prefs::kDevToolsDisabled,
 397       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 398   profile_pref_registrar_.Add(
 399       prefs::kShowBookmarkBar,
 400       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 401                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 402
 403   BrowserList::AddBrowser(this);
 404
 405   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 406   // or you'll get a nasty surprise when you run the incognito tests.
 407   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 408                              profile_->GetPrefs());
 409
 410   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 411     instant_controller_.reset(new BrowserInstantController(this));
 412
 413   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 414
 415   ProfileMetrics::LogProfileLaunch(profile_);
 416
 417   window_ = params.window ? params.window : CreateBrowserWindow(this);
 418
 419   // Create the extension window controller before sending notifications.
 420   extension_window_controller_.reset(
 421       new BrowserExtensionWindowController(this));
 422
 423   SessionService* session_service =
 424       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 425   if (session_service)
 426     session_service->WindowOpened(this);
 427
 428   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 429   //             replace uses of this with BL's notifications.
 430   content::NotificationService::current()->Notify(
 431       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 432       content::Source<Browser>(this),
 433       content::NotificationService::NoDetails());
 434
 435   // TODO(beng): move to ChromeBrowserMain:
 436   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 437 #if defined(OS_WIN)
 438     // Notify PDM that this is a first run.
 439     ImportAutofillDataWin(
 440         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 441 #endif  // defined(OS_WIN)
 442   }
 443
 444   fullscreen_controller_.reset(new FullscreenController(this));
 445 }
 446
 447 Browser::~Browser() {
 448   // The tab strip should not have any tabs at this point.
 449   DCHECK(tab_strip_model_->empty());
 450   tab_strip_model_->RemoveObserver(this);
 451
 452   // Destroy the BrowserCommandController before removing the browser, so that
 453   // it doesn't act on any notifications that are sent as a result of removing
 454   // the browser.
 455   command_controller_.reset();
 456   BrowserList::RemoveBrowser(this);
 457
 458   SessionService* session_service =
 459       SessionServiceFactory::GetForProfile(profile_);
 460   if (session_service)
 461     session_service->WindowClosed(session_id_);
 462
 463   TabRestoreService* tab_restore_service =
 464       TabRestoreServiceFactory::GetForProfile(profile());
 465   if (tab_restore_service)
 466     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 467
 468 #if !defined(OS_MACOSX)
 469   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 470     // We're the last browser window with this profile. We need to nuke the
 471     // TabRestoreService, which will start the shutdown of the
 472     // NavigationControllers and allow for proper shutdown. If we don't do this
 473     // chrome won't shutdown cleanly, and may end up crashing when some
 474     // thread tries to use the IO thread (or another thread) that is no longer
 475     // valid.
 476     // This isn't a valid assumption for Mac OS, as it stays running after
 477     // the last browser has closed. The Mac equivalent is in its app
 478     // controller.
 479     TabRestoreServiceFactory::ResetForProfile(profile_);
 480   }
 481 #endif
 482
 483   profile_pref_registrar_.RemoveAll();
 484
 485   encoding_auto_detect_.Destroy();
 486
 487   // Destroy BrowserExtensionWindowController before the incognito profile
 488   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 489   extension_window_controller_.reset();
 490
 491   // Destroy BrowserInstantController before the incongnito profile is destroyed
 492   // because the InstantController destructor depends on this profile.
 493   instant_controller_.reset();
 494
 495   if (profile_->IsOffTheRecord() &&
 496       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 497     // An incognito profile is no longer needed, this indirectly frees
 498     // its cache and cookies once it gets destroyed at the appropriate time.
 499     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 500   }
 501
 502   // There may be pending file dialogs, we need to tell them that we've gone
 503   // away so they don't try and call back to us.
 504   if (select_file_dialog_.get())
 505     select_file_dialog_->ListenerDestroyed();
 506
 507   int num_downloads;
 508   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 509           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 510       !browser_defaults::kBrowserAliveWithNoWindows) {
 511     DownloadService::CancelAllDownloads();
 512   }
 513 }
 514
 515 ///////////////////////////////////////////////////////////////////////////////
 516 // Getters & Setters
 517
 518 FindBarController* Browser::GetFindBarController() {
 519   if (!find_bar_controller_.get()) {
 520     FindBar* find_bar = window_->CreateFindBar();
 521     find_bar_controller_.reset(new FindBarController(find_bar));
 522     find_bar->SetFindBarController(find_bar_controller_.get());
 523     find_bar_controller_->ChangeWebContents(
 524         tab_strip_model_->GetActiveWebContents());
 525     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 526   }
 527   return find_bar_controller_.get();
 528 }
 529
 530 bool Browser::HasFindBarController() const {
 531   return find_bar_controller_.get() != NULL;
 532 }
 533
 534 bool Browser::is_app() const {
 535   return !app_name_.empty();
 536 }
 537
 538 bool Browser::is_devtools() const {
 539   return app_name_ == DevToolsWindow::kDevToolsApp;
 540 }
 541
 542 ///////////////////////////////////////////////////////////////////////////////
 543 // Browser, State Storage and Retrieval for UI:
 544
 545 gfx::Image Browser::GetCurrentPageIcon() const {
 546   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 547   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 548   // window during the window's creation (before tabs have been added).
 549   FaviconTabHelper* favicon_tab_helper =
 550       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 551   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 552 }
 553
 554 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 555   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 556   base::string16 title;
 557
 558   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 559   // window during the window's creation (before tabs have been added).
 560   if (contents) {
 561     title = contents->GetTitle();
 562     FormatTitleForDisplay(&title);
 563   }
 564   if (title.empty())
 565     title = CoreTabHelper::GetDefaultTitle();
 566
 567 #if defined(OS_MACOSX)
 568   // On Mac, we don't want to suffix the page title with
 569   // the application name.
 570   return title;
 571 #elif defined(USE_ASH)
 572   // On Ash, we don't want to suffix the page title with the application name,
 573   // but on Windows, where USE_ASH can also be true, we still want the prefix
 574   // on desktop.
 575   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 576     return title;
 577 #endif
 578   // Don't append the app name to window titles on app frames and app popups
 579   return is_app() ?
 580       title :
 581       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 582 }
 583
 584 // static
 585 void Browser::FormatTitleForDisplay(base::string16* title) {
 586   size_t current_index = 0;
 587   size_t match_index;
 588   while ((match_index = title->find(L'\n', current_index)) !=
 589          base::string16::npos) {
 590     title->replace(match_index, 1, base::string16());
 591     current_index = match_index;
 592   }
 593 }
 594
 595 ///////////////////////////////////////////////////////////////////////////////
 596 // Browser, OnBeforeUnload handling:
 597
 598 bool Browser::ShouldCloseWindow() {
 599   if (!CanCloseWithInProgressDownloads())
 600     return false;
 601
 602   if (IsFastTabUnloadEnabled())
 603     return fast_unload_controller_->ShouldCloseWindow();
 604   return unload_controller_->ShouldCloseWindow();
 605 }
 606
 607 bool Browser::CallBeforeUnloadHandlers(
 608     const base::Callback<void(bool)>& on_close_confirmed) {
 609   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 610   if (IsFastTabUnloadEnabled()) {
 611     return fast_unload_controller_->CallBeforeUnloadHandlers(
 612         on_close_confirmed);
 613   }
 614   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 615 }
 616
 617 void Browser::ResetBeforeUnloadHandlers() {
 618   cancel_download_confirmation_state_ = NOT_PROMPTED;
 619   if (IsFastTabUnloadEnabled())
 620     fast_unload_controller_->ResetBeforeUnloadHandlers();
 621   else
 622     unload_controller_->ResetBeforeUnloadHandlers();
 623 }
 624
 625 bool Browser::HasCompletedUnloadProcessing() const {
 626   DCHECK(IsFastTabUnloadEnabled());
 627   return fast_unload_controller_->HasCompletedUnloadProcessing();
 628 }
 629
 630 bool Browser::IsAttemptingToCloseBrowser() const {
 631   if (IsFastTabUnloadEnabled())
 632     return fast_unload_controller_->is_attempting_to_close_browser();
 633   return unload_controller_->is_attempting_to_close_browser();
 634 }
 635
 636 void Browser::OnWindowClosing() {
 637   if (!ShouldCloseWindow())
 638     return;
 639
 640   // Application should shutdown on last window close if the user is explicitly
 641   // trying to quit, or if there is nothing keeping the browser alive (such as
 642   // AppController on the Mac, or BackgroundContentsService for background
 643   // pages).
 644   bool should_quit_if_last_browser =
 645       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 646
 647   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 648     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 649
 650   // Don't use GetForProfileIfExisting here, we want to force creation of the
 651   // session service so that user can restore what was open.
 652   SessionService* session_service =
 653       SessionServiceFactory::GetForProfile(profile());
 654   if (session_service)
 655     session_service->WindowClosing(session_id());
 656
 657   TabRestoreService* tab_restore_service =
 658       TabRestoreServiceFactory::GetForProfile(profile());
 659
 660 #if defined(USE_AURA)
 661   if (tab_restore_service && is_app() && !is_devtools())
 662     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 663 #endif
 664
 665   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 666     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 667
 668   // TODO(sky): convert session/tab restore to use notification.
 669   content::NotificationService::current()->Notify(
 670       chrome::NOTIFICATION_BROWSER_CLOSING,
 671       content::Source<Browser>(this),
 672       content::NotificationService::NoDetails());
 673
 674   if (!IsFastTabUnloadEnabled())
 675     tab_strip_model_->CloseAllTabs();
 676 }
 677
 678 ////////////////////////////////////////////////////////////////////////////////
 679 // In-progress download termination handling:
 680
 681 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 682   if (cancel_downloads) {
 683     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 684     chrome::CloseWindow(this);
 685     return;
 686   }
 687
 688   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 689   // close again we'll show the warning again.
 690   cancel_download_confirmation_state_ = NOT_PROMPTED;
 691
 692   // Show the download page so the user can figure-out what downloads are still
 693   // in-progress.
 694   chrome::ShowDownloads(this);
 695
 696   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 697   // prompt every time any tab is closed. http://crbug.com/305516
 698   if (IsFastTabUnloadEnabled())
 699     fast_unload_controller_->CancelWindowClose();
 700   else
 701     unload_controller_->CancelWindowClose();
 702 }
 703
 704 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 705     int* num_downloads_blocking) const {
 706   DCHECK(num_downloads_blocking);
 707   *num_downloads_blocking = 0;
 708
 709   // If we're not running a full browser process with a profile manager
 710   // (testing), it's ok to close the browser.
 711   if (!g_browser_process->profile_manager())
 712     return DOWNLOAD_CLOSE_OK;
 713
 714   int total_download_count =
 715       DownloadService::NonMaliciousDownloadCountAllProfiles();
 716   if (total_download_count == 0)
 717     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 718
 719   // Figure out how many windows are open total, and associated with this
 720   // profile, that are relevant for the ok-to-close decision.
 721   int profile_window_count = 0;
 722   int total_window_count = 0;
 723   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 724     // Don't count this browser window or any other in the process of closing.
 725     Browser* const browser = *it;
 726     // Window closing may be delayed, and windows that are in the process of
 727     // closing don't count against our totals.
 728     if (browser == this || browser->IsAttemptingToCloseBrowser())
 729       continue;
 730
 731     if (it->profile() == profile())
 732       profile_window_count++;
 733     total_window_count++;
 734   }
 735
 736   // If there aren't any other windows, we're at browser shutdown,
 737   // which would cancel all current downloads.
 738   if (total_window_count == 0) {
 739     *num_downloads_blocking = total_download_count;
 740     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 741   }
 742
 743   // If there aren't any other windows on our profile, and we're an incognito
 744   // profile, and there are downloads associated with that profile,
 745   // those downloads would be cancelled by our window (-> profile) close.
 746   DownloadService* download_service =
 747       DownloadServiceFactory::GetForBrowserContext(profile());
 748   if ((profile_window_count == 0) &&
 749       (download_service->NonMaliciousDownloadCount() > 0) &&
 750       profile()->IsOffTheRecord()) {
 751     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 752     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 753   }
 754
 755   // Those are the only conditions under which we will block shutdown.
 756   return DOWNLOAD_CLOSE_OK;
 757 }
 758
 759 ////////////////////////////////////////////////////////////////////////////////
 760 // Browser, Tab adding/showing functions:
 761
 762 void Browser::WindowFullscreenStateChanged() {
 763   fullscreen_controller_->WindowFullscreenStateChanged();
 764   command_controller_->FullscreenStateChanged();
 765   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 766 }
 767
 768 void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
 769   // When the current tab's SSL state changes, we need to update the URL
 770   // bar to reflect the new state.
 771   DCHECK(web_contents);
 772   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 773     UpdateToolbar(false);
 774 }
 775
 776 void Browser::OnWebContentsInstantSupportDisabled(
 777     const content::WebContents* web_contents) {
 778   DCHECK(web_contents);
 779   if (tab_strip_model_->GetActiveWebContents() == web_contents)
 780     UpdateToolbar(false);
 781 }
 782
 783 ///////////////////////////////////////////////////////////////////////////////
 784 // Browser, Assorted browser commands:
 785
 786 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 787   fullscreen_controller_->
 788       ToggleBrowserFullscreenModeWithExtension(extension_url);
 789 }
 790
 791 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 792   return SupportsWindowFeatureImpl(feature, true);
 793 }
 794
 795 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 796   return SupportsWindowFeatureImpl(feature, false);
 797 }
 798
 799 void Browser::ToggleEncodingAutoDetect() {
 800   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 801   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 802   // If "auto detect" is turned on, then any current override encoding
 803   // is cleared. This also implicitly performs a reload.
 804   // OTOH, if "auto detect" is turned off, we don't change the currently
 805   // active encoding.
 806   if (encoding_auto_detect_.GetValue()) {
 807     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 808     if (contents)
 809       contents->ResetOverrideEncoding();
 810   }
 811 }
 812
 813 void Browser::OverrideEncoding(int encoding_id) {
 814   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 815   const std::string selected_encoding =
 816       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 817   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 818   if (!selected_encoding.empty() && contents)
 819      contents->SetOverrideEncoding(selected_encoding);
 820   // Update the list of recently selected encodings.
 821   std::string new_selected_encoding_list;
 822   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 823         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 824         encoding_id,
 825         &new_selected_encoding_list)) {
 826     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 827                                     new_selected_encoding_list);
 828   }
 829 }
 830
 831 void Browser::OpenFile() {
 832   content::RecordAction(UserMetricsAction("OpenFile"));
 833   select_file_dialog_ = ui::SelectFileDialog::Create(
 834       this, new ChromeSelectFilePolicy(
 835           tab_strip_model_->GetActiveWebContents()));
 836
 837   const base::FilePath directory = profile_->last_selected_directory();
 838
 839   // TODO(beng): figure out how to juggle this.
 840   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 841   ui::SelectFileDialog::FileTypeInfo file_types;
 842   file_types.support_drive = true;
 843   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 844                                   base::string16(),
 845                                   directory,
 846                                   &file_types,
 847                                   0,
 848                                   base::FilePath::StringType(),
 849                                   parent_window,
 850                                   NULL);
 851 }
 852
 853 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 854   if (GetStatusBubble())
 855     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 856 }
 857
 858 ///////////////////////////////////////////////////////////////////////////////
 859
 860 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 861                                          content::PageTransition transition,
 862                                          bool user_initiated) {
 863   tab_strip_model_->TabNavigating(contents, transition);
 864
 865   bool contents_is_selected =
 866       contents == tab_strip_model_->GetActiveWebContents();
 867   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 868     // Forcibly reset the location bar if the url is going to change in the
 869     // current tab, since otherwise it won't discard any ongoing user edits,
 870     // since it doesn't realize this is a user-initiated action.
 871     window()->GetLocationBar()->Revert();
 872   }
 873
 874   if (GetStatusBubble())
 875     GetStatusBubble()->Hide();
 876
 877   // Update the location bar. This is synchronous. We specifically don't
 878   // update the load state since the load hasn't started yet and updating it
 879   // will put it out of sync with the actual state like whether we're
 880   // displaying a favicon, which controls the throbber. If we updated it here,
 881   // the throbber will show the default favicon for a split second when
 882   // navigating away from the new tab page.
 883   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 884
 885   if (contents_is_selected)
 886     contents->GetView()->SetInitialFocus();
 887 }
 888
 889 ///////////////////////////////////////////////////////////////////////////////
 890 // Browser, PageNavigator implementation:
 891
 892 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 893   return OpenURLFromTab(NULL, params);
 894 }
 895
 896 ///////////////////////////////////////////////////////////////////////////////
 897 // Browser, TabStripModelObserver implementation:
 898
 899 void Browser::TabInsertedAt(WebContents* contents,
 900                             int index,
 901                             bool foreground) {
 902   SetAsDelegate(contents, this);
 903   SessionTabHelper* session_tab_helper =
 904       SessionTabHelper::FromWebContents(contents);
 905   session_tab_helper->SetWindowID(session_id());
 906
 907   content::NotificationService::current()->Notify(
 908       chrome::NOTIFICATION_TAB_PARENTED,
 909       content::Source<content::WebContents>(contents),
 910       content::NotificationService::NoDetails());
 911
 912   SyncHistoryWithTabs(index);
 913
 914   // Make sure the loading state is updated correctly, otherwise the throbber
 915   // won't start if the page is loading.
 916   LoadingStateChanged(contents, true);
 917
 918   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 919
 920   SessionService* session_service =
 921       SessionServiceFactory::GetForProfile(profile_);
 922   if (session_service) {
 923     session_service->TabInserted(contents);
 924     int new_active_index = tab_strip_model_->active_index();
 925     if (index < new_active_index)
 926       session_service->SetSelectedTabInWindow(session_id(),
 927                                               new_active_index);
 928   }
 929 }
 930
 931 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 932                            WebContents* contents,
 933                            int index) {
 934   fullscreen_controller_->OnTabClosing(contents);
 935   SessionService* session_service =
 936       SessionServiceFactory::GetForProfile(profile_);
 937   if (session_service)
 938     session_service->TabClosing(contents);
 939   content::NotificationService::current()->Notify(
 940       chrome::NOTIFICATION_TAB_CLOSING,
 941       content::Source<NavigationController>(&contents->GetController()),
 942       content::NotificationService::NoDetails());
 943
 944   // Sever the WebContents' connection back to us.
 945   SetAsDelegate(contents, NULL);
 946 }
 947
 948 void Browser::TabDetachedAt(WebContents* contents, int index) {
 949   // TabDetachedAt is called before TabStripModel has updated the
 950   // active index.
 951   int old_active_index = tab_strip_model_->active_index();
 952   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 953     SessionService* session_service =
 954         SessionServiceFactory::GetForProfileIfExisting(profile_);
 955     if (session_service)
 956       session_service->SetSelectedTabInWindow(session_id(),
 957                                               old_active_index - 1);
 958   }
 959   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 960 }
 961
 962 void Browser::TabDeactivated(WebContents* contents) {
 963   fullscreen_controller_->OnTabDeactivated(contents);
 964   search_delegate_->OnTabDeactivated(contents);
 965   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 966
 967   // Save what the user's currently typing, so it can be restored when we
 968   // switch back to this tab.
 969   window_->GetLocationBar()->SaveStateToContents(contents);
 970
 971   if (instant_controller_)
 972     instant_controller_->TabDeactivated(contents);
 973 }
 974
 975 void Browser::ActiveTabChanged(WebContents* old_contents,
 976                                WebContents* new_contents,
 977                                int index,
 978                                int reason) {
 979   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 980
 981   // Update the bookmark state, since the BrowserWindow may query it during
 982   // OnActiveTabChanged() below.
 983   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
 984
 985   // Let the BrowserWindow do its handling.  On e.g. views this changes the
 986   // focused object, which should happen before we update the toolbar below,
 987   // since the omnibox expects the correct element to already be focused when it
 988   // is updated.
 989   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
 990
 991   fullscreen_controller_->OnTabDetachedFromView(old_contents);
 992
 993   // Discarded tabs always get reloaded.
 994   if (tab_strip_model_->IsTabDiscarded(index)) {
 995     LOG(WARNING) << "Reloading discarded tab at " << index;
 996     static int reload_count = 0;
 997     UMA_HISTOGRAM_CUSTOM_COUNTS(
 998         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
 999     chrome::Reload(this, CURRENT_TAB);
1000   }
1001
1002   // If we have any update pending, do it now.
1003   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1004     ProcessPendingUIUpdates();
1005
1006   // Propagate the profile to the location bar.
1007   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1008
1009   if (chrome::IsInstantExtendedAPIEnabled())
1010     search_delegate_->OnTabActivated(new_contents);
1011
1012   // Update reload/stop state.
1013   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1014
1015   // Update commands to reflect current state.
1016   command_controller_->TabStateChanged();
1017
1018   // Reset the status bubble.
1019   StatusBubble* status_bubble = GetStatusBubble();
1020   if (status_bubble) {
1021     status_bubble->Hide();
1022
1023     // Show the loading state (if any).
1024     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1025         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1026   }
1027
1028   if (HasFindBarController()) {
1029     find_bar_controller_->ChangeWebContents(new_contents);
1030     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1031   }
1032
1033   // Update sessions. Don't force creation of sessions. If sessions doesn't
1034   // exist, the change will be picked up by sessions when created.
1035   SessionService* session_service =
1036       SessionServiceFactory::GetForProfileIfExisting(profile_);
1037   if (session_service && !tab_strip_model_->closing_all()) {
1038     session_service->SetSelectedTabInWindow(session_id(),
1039                                             tab_strip_model_->active_index());
1040   }
1041
1042   // This needs to be called after notifying SearchDelegate.
1043   if (instant_controller_)
1044     instant_controller_->ActiveTabChanged();
1045
1046   autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
1047       TabActivated();
1048   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1049 }
1050
1051 void Browser::TabMoved(WebContents* contents,
1052                        int from_index,
1053                        int to_index) {
1054   DCHECK(from_index >= 0 && to_index >= 0);
1055   // Notify the history service.
1056   SyncHistoryWithTabs(std::min(from_index, to_index));
1057 }
1058
1059 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1060                             WebContents* old_contents,
1061                             WebContents* new_contents,
1062                             int index) {
1063   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1064   fullscreen_controller_->OnTabClosing(old_contents);
1065   SessionService* session_service =
1066       SessionServiceFactory::GetForProfile(profile_);
1067   if (session_service)
1068     session_service->TabClosing(old_contents);
1069   TabInsertedAt(new_contents,
1070                 index,
1071                 (index == tab_strip_model_->active_index()));
1072
1073   int entry_count = new_contents->GetController().GetEntryCount();
1074   if (entry_count > 0) {
1075     // Send out notification so that observers are updated appropriately.
1076     new_contents->GetController().NotifyEntryChanged(
1077         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1078         entry_count - 1);
1079   }
1080
1081   if (session_service) {
1082     // The new_contents may end up with a different navigation stack. Force
1083     // the session service to update itself.
1084     session_service->TabRestored(new_contents,
1085                                  tab_strip_model_->IsTabPinned(index));
1086   }
1087 }
1088
1089 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1090   SessionService* session_service =
1091       SessionServiceFactory::GetForProfileIfExisting(profile());
1092   if (session_service) {
1093     SessionTabHelper* session_tab_helper =
1094         SessionTabHelper::FromWebContents(contents);
1095     session_service->SetPinnedState(session_id(),
1096                                     session_tab_helper->session_id(),
1097                                     tab_strip_model_->IsTabPinned(index));
1098   }
1099 }
1100
1101 void Browser::TabStripEmpty() {
1102   // Close the frame after we return to the message loop (not immediately,
1103   // otherwise it will destroy this object before the stack has a chance to
1104   // cleanly unwind.)
1105   // Note: This will be called several times if TabStripEmpty is called several
1106   //       times. This is because it does not close the window if tabs are
1107   //       still present.
1108   base::MessageLoop::current()->PostTask(
1109       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1110
1111   // Instant may have visible WebContents that need to be detached before the
1112   // window system closes.
1113   instant_controller_.reset();
1114 }
1115
1116 bool Browser::CanOverscrollContent() const {
1117 #if defined(USE_AURA)
1118   const std::string value = CommandLine::ForCurrentProcess()->
1119       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
1120   bool overscroll_enabled = value != "0";
1121   if (!overscroll_enabled)
1122     return false;
1123   if (is_app() || is_devtools() || !is_type_tabbed())
1124     return false;
1125
1126   // The detached bookmark bar has appearance of floating above the
1127   // web-contents. This does not play nicely with overscroll navigation
1128   // gestures. So disable overscroll navigation when the bookmark bar is in the
1129   // detached state and the overscroll effect moves the layers.
1130   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1131     return false;
1132   return true;
1133 #else
1134   return false;
1135 #endif
1136 }
1137
1138 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1139                                      const NativeWebKeyboardEvent& event,
1140                                      bool* is_keyboard_shortcut) {
1141   // Escape exits tabbed fullscreen mode.
1142   // TODO(koz): Write a test for this http://crbug.com/100441.
1143   if (event.windowsKeyCode == 27 &&
1144       fullscreen_controller_->HandleUserPressedEscape()) {
1145     return true;
1146   }
1147   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1148 }
1149
1150 void Browser::HandleKeyboardEvent(content::WebContents* source,
1151                                   const NativeWebKeyboardEvent& event) {
1152   window()->HandleKeyboardEvent(event);
1153 }
1154
1155 bool Browser::TabsNeedBeforeUnloadFired() {
1156   if (IsFastTabUnloadEnabled())
1157     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1158   return unload_controller_->TabsNeedBeforeUnloadFired();
1159 }
1160
1161 void Browser::OverscrollUpdate(int delta_y) {
1162   window_->OverscrollUpdate(delta_y);
1163 }
1164
1165 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1166                                     const gfx::Rect& anchor_in_root_view,
1167                                     const base::string16& main_text,
1168                                     const base::string16& sub_text) {
1169   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1170   if (rwhv) {
1171     validation_message_bubble_ =
1172         chrome::ValidationMessageBubble::CreateAndShow(
1173             rwhv->GetRenderWidgetHost(),
1174             anchor_in_root_view,
1175             main_text,
1176             sub_text);
1177   }
1178 }
1179
1180 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1181   validation_message_bubble_.reset();
1182 }
1183
1184 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1185                                     const gfx::Rect& anchor_in_root_view) {
1186   if (!validation_message_bubble_)
1187     return;
1188   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1189   if (rwhv) {
1190     validation_message_bubble_->SetPositionRelativeToAnchor(
1191         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1192   }
1193 }
1194
1195 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1196                                     const blink::WebGestureEvent& event) {
1197   // Disable pinch zooming in undocked dev tools window due to poor UX.
1198   if (app_name() == DevToolsWindow::kDevToolsApp)
1199     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1200            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1201            event.type == blink::WebGestureEvent::GesturePinchEnd;
1202
1203   return false;
1204 }
1205
1206 bool Browser::IsMouseLocked() const {
1207   return fullscreen_controller_->IsMouseLocked();
1208 }
1209
1210 void Browser::OnWindowDidShow() {
1211   if (window_has_shown_)
1212     return;
1213   window_has_shown_ = true;
1214
1215 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1216 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1217   // Measure the latency from startup till the first browser window becomes
1218   // visible.
1219   static bool is_first_browser_window = true;
1220   if (is_first_browser_window &&
1221       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1222     is_first_browser_window = false;
1223     const base::Time process_creation_time =
1224         base::CurrentProcessInfo::CreationTime();
1225
1226     if (!process_creation_time.is_null()) {
1227       UMA_HISTOGRAM_LONG_TIMES(
1228           "Startup.BrowserWindowDisplay",
1229           base::Time::Now() - process_creation_time);
1230     }
1231   }
1232 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1233
1234   // Nothing to do for non-tabbed windows.
1235   if (!is_type_tabbed())
1236     return;
1237
1238   // Show any pending global error bubble.
1239   GlobalErrorService* service =
1240       GlobalErrorServiceFactory::GetForProfile(profile());
1241   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1242   if (error)
1243     error->ShowBubbleView(this);
1244 }
1245
1246 void Browser::ShowFirstRunBubble() {
1247   window()->GetLocationBar()->ShowFirstRunBubble();
1248 }
1249
1250 void Browser::ShowDownload(content::DownloadItem* download) {
1251   if (!window())
1252     return;
1253
1254   // If the download occurs in a new tab, and it's not a save page
1255   // download (started before initial navigation completed) close it.
1256   WebContents* source = download->GetWebContents();
1257   if (source && source->GetController().IsInitialNavigation() &&
1258       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1259     CloseContents(source);
1260   }
1261
1262   // Some (app downloads) are not supposed to appear on the shelf.
1263   if (!DownloadItemModel(download).ShouldShowInShelf())
1264     return;
1265
1266   // GetDownloadShelf creates the download shelf if it was not yet created.
1267   DownloadShelf* shelf = window()->GetDownloadShelf();
1268   shelf->AddDownload(download);
1269 }
1270
1271 ///////////////////////////////////////////////////////////////////////////////
1272 // Browser, content::WebContentsDelegate implementation:
1273
1274 WebContents* Browser::OpenURLFromTab(WebContents* source,
1275                                      const OpenURLParams& params) {
1276   chrome::NavigateParams nav_params(this, params.url, params.transition);
1277   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1278   nav_params.source_contents = source;
1279   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1280   nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1281   nav_params.user_gesture = params.user_gesture;
1282
1283   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1284   if (source)
1285     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1286
1287   if (popup_blocker_helper) {
1288     if ((params.disposition == NEW_POPUP ||
1289          params.disposition == NEW_FOREGROUND_TAB ||
1290          params.disposition == NEW_BACKGROUND_TAB ||
1291          params.disposition == NEW_WINDOW) &&
1292         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1293                                     switches::kDisablePopupBlocking)) {
1294       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1295                                                 WebWindowFeatures())) {
1296         return NULL;
1297       }
1298     }
1299   }
1300
1301   chrome::Navigate(&nav_params);
1302
1303   return nav_params.target_contents;
1304 }
1305
1306 void Browser::NavigationStateChanged(const WebContents* source,
1307                                      unsigned changed_flags) {
1308   // Only update the UI when something visible has changed.
1309   if (changed_flags)
1310     ScheduleUIUpdate(source, changed_flags);
1311
1312   // We can synchronously update commands since they will only change once per
1313   // navigation, so we don't have to worry about flickering. We do, however,
1314   // need to update the command state early on load to always present usable
1315   // actions in the face of slow-to-commit pages.
1316   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1317                        content::INVALIDATE_TYPE_LOAD))
1318     command_controller_->TabStateChanged();
1319 }
1320
1321 void Browser::AddNewContents(WebContents* source,
1322                              WebContents* new_contents,
1323                              WindowOpenDisposition disposition,
1324                              const gfx::Rect& initial_pos,
1325                              bool user_gesture,
1326                              bool* was_blocked) {
1327   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1328                          user_gesture, was_blocked);
1329 }
1330
1331 void Browser::ActivateContents(WebContents* contents) {
1332   tab_strip_model_->ActivateTabAt(
1333       tab_strip_model_->GetIndexOfWebContents(contents), false);
1334   window_->Activate();
1335 }
1336
1337 void Browser::DeactivateContents(WebContents* contents) {
1338   window_->Deactivate();
1339 }
1340
1341 void Browser::LoadingStateChanged(WebContents* source,
1342     bool to_different_document) {
1343   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1344   window_->UpdateTitleBar();
1345
1346   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1347   if (source == selected_contents) {
1348     bool is_loading = source->IsLoading() && to_different_document;
1349     command_controller_->LoadingStateChanged(is_loading, false);
1350     if (GetStatusBubble()) {
1351       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1352           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1353     }
1354   }
1355 }
1356
1357 void Browser::CloseContents(WebContents* source) {
1358   bool can_close_contents;
1359   if (IsFastTabUnloadEnabled())
1360     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1361   else
1362     can_close_contents = unload_controller_->CanCloseContents(source);
1363
1364   if (can_close_contents)
1365     chrome::CloseWebContents(this, source, true);
1366 }
1367
1368 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1369   if (!IsPopupOrPanel(source)) {
1370     NOTREACHED() << "moving invalid browser type";
1371     return;
1372   }
1373   window_->SetBounds(pos);
1374 }
1375
1376 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1377   return is_type_popup();
1378 }
1379
1380 void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1381                               const GURL& url) {
1382   if (!GetStatusBubble())
1383     return;
1384
1385   if (source == tab_strip_model_->GetActiveWebContents()) {
1386     PrefService* prefs = profile_->GetPrefs();
1387     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1388   }
1389 }
1390
1391 void Browser::ContentsMouseEvent(
1392     WebContents* source, const gfx::Point& location, bool motion) {
1393   if (!GetStatusBubble())
1394     return;
1395
1396   if (source == tab_strip_model_->GetActiveWebContents()) {
1397     GetStatusBubble()->MouseMoved(location, !motion);
1398     if (!motion)
1399       GetStatusBubble()->SetURL(GURL(), std::string());
1400   }
1401 }
1402
1403 void Browser::ContentsZoomChange(bool zoom_in) {
1404   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1405 }
1406
1407 void Browser::WebContentsFocused(WebContents* contents) {
1408   window_->WebContentsFocused(contents);
1409 }
1410
1411 bool Browser::TakeFocus(content::WebContents* source,
1412                         bool reverse) {
1413   content::NotificationService::current()->Notify(
1414       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1415       content::Source<Browser>(this),
1416       content::NotificationService::NoDetails());
1417   return false;
1418 }
1419
1420 gfx::Rect Browser::GetRootWindowResizerRect() const {
1421   return window_->GetRootWindowResizerRect();
1422 }
1423
1424 void Browser::BeforeUnloadFired(WebContents* web_contents,
1425                                 bool proceed,
1426                                 bool* proceed_to_fire_unload) {
1427   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1428         proceed, proceed_to_fire_unload))
1429     return;
1430
1431   if (IsFastTabUnloadEnabled()) {
1432     *proceed_to_fire_unload =
1433         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1434   } else {
1435     *proceed_to_fire_unload =
1436         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1437   }
1438 }
1439
1440 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1441   const content::NavigationEntry* entry =
1442       source->GetController().GetActiveEntry();
1443   if (entry) {
1444     GURL url = entry->GetURL();
1445     GURL virtual_url = entry->GetVirtualURL();
1446     if ((url.SchemeIs(content::kChromeUIScheme) &&
1447         url.host() == chrome::kChromeUINewTabHost) ||
1448         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1449         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1450       return true;
1451     }
1452   }
1453
1454   return chrome::NavEntryIsInstantNTP(source, entry);
1455 }
1456
1457 void Browser::SetFocusToLocationBar(bool select_all) {
1458   // Two differences between this and FocusLocationBar():
1459   // (1) This doesn't get recorded in user metrics, since it's called
1460   //     internally.
1461   // (2) This checks whether the location bar can be focused, and if not, clears
1462   //     the focus.  FocusLocationBar() is only reached when the location bar is
1463   //     focusable, but this may be reached at other times, e.g. while in
1464   //     fullscreen mode, where we need to leave focus in a consistent state.
1465   window_->SetFocusToLocationBar(select_all);
1466 }
1467
1468 int Browser::GetExtraRenderViewHeight() const {
1469   return window_->GetExtraRenderViewHeight();
1470 }
1471
1472 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1473   DCHECK(source);
1474   chrome::ViewSource(this, source);
1475 }
1476
1477 void Browser::ViewSourceForFrame(WebContents* source,
1478                                  const GURL& frame_url,
1479                                  const content::PageState& frame_page_state) {
1480   DCHECK(source);
1481   chrome::ViewSource(this, source, frame_url, frame_page_state);
1482 }
1483
1484 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1485   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1486                                 source);
1487 }
1488
1489 bool Browser::ShouldCreateWebContents(
1490     WebContents* web_contents,
1491     int route_id,
1492     WindowContainerType window_container_type,
1493     const base::string16& frame_name,
1494     const GURL& target_url,
1495     const std::string& partition_id,
1496     content::SessionStorageNamespace* session_storage_namespace) {
1497   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1498     // If a BackgroundContents is created, suppress the normal WebContents.
1499     return !MaybeCreateBackgroundContents(route_id,
1500                                           web_contents,
1501                                           frame_name,
1502                                           target_url,
1503                                           partition_id,
1504                                           session_storage_namespace);
1505   }
1506
1507   return true;
1508 }
1509
1510 void Browser::WebContentsCreated(WebContents* source_contents,
1511                                  int opener_render_frame_id,
1512                                  const base::string16& frame_name,
1513                                  const GURL& target_url,
1514                                  WebContents* new_contents) {
1515   // Adopt the WebContents now, so all observers are in place, as the network
1516   // requests for its initial navigation will start immediately. The WebContents
1517   // will later be inserted into this browser using Browser::Navigate via
1518   // AddNewContents.
1519   TabHelpers::AttachTabHelpers(new_contents);
1520
1521   // Notify.
1522   RetargetingDetails details;
1523   details.source_web_contents = source_contents;
1524   details.source_render_frame_id = opener_render_frame_id;
1525   details.target_url = target_url;
1526   details.target_web_contents = new_contents;
1527   details.not_yet_in_tabstrip = true;
1528   content::NotificationService::current()->Notify(
1529       chrome::NOTIFICATION_RETARGETING,
1530       content::Source<Profile>(profile_),
1531       content::Details<RetargetingDetails>(&details));
1532 }
1533
1534 void Browser::RendererUnresponsive(WebContents* source) {
1535   // Ignore hangs if a tab is blocked.
1536   int index = tab_strip_model_->GetIndexOfWebContents(source);
1537   DCHECK_NE(TabStripModel::kNoTab, index);
1538   if (tab_strip_model_->IsTabBlocked(index))
1539     return;
1540
1541   chrome::ShowHungRendererDialog(source);
1542 }
1543
1544 void Browser::RendererResponsive(WebContents* source) {
1545   chrome::HideHungRendererDialog(source);
1546 }
1547
1548 void Browser::WorkerCrashed(WebContents* source) {
1549   SimpleAlertInfoBarDelegate::Create(
1550       InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
1551       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1552 }
1553
1554 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1555   if (web_contents == tab_strip_model_->GetActiveWebContents())
1556     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1557 }
1558
1559 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1560   if (web_contents == tab_strip_model_->GetActiveWebContents())
1561     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1562 }
1563
1564 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1565   return GetJavaScriptDialogManagerInstance();
1566 }
1567
1568 content::ColorChooser* Browser::OpenColorChooser(
1569       WebContents* web_contents,
1570       SkColor initial_color,
1571       const std::vector<content::ColorSuggestion>& suggestions) {
1572   return chrome::ShowColorChooser(web_contents, initial_color);
1573 }
1574
1575 void Browser::RunFileChooser(WebContents* web_contents,
1576                              const content::FileChooserParams& params) {
1577   FileSelectHelper::RunFileChooser(web_contents, params);
1578 }
1579
1580 void Browser::EnumerateDirectory(WebContents* web_contents,
1581                                  int request_id,
1582                                  const base::FilePath& path) {
1583   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1584 }
1585
1586 bool Browser::EmbedsFullscreenWidget() const {
1587 #if defined(TOOLKIT_GTK)
1588   return false;
1589 #else
1590   return !CommandLine::ForCurrentProcess()->
1591       HasSwitch(switches::kDisableFullscreenWithinTab);
1592 #endif
1593 }
1594
1595 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1596                                          bool enter_fullscreen) {
1597   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1598                                                      enter_fullscreen);
1599 }
1600
1601 bool Browser::IsFullscreenForTabOrPending(
1602     const WebContents* web_contents) const {
1603   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1604 }
1605
1606 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1607                                       const std::string& protocol,
1608                                       const GURL& url,
1609                                       const base::string16& title,
1610                                       bool user_gesture) {
1611   Profile* profile =
1612       Profile::FromBrowserContext(web_contents->GetBrowserContext());
1613   if (profile->IsOffTheRecord())
1614     return;
1615
1616   ProtocolHandler handler =
1617       ProtocolHandler::CreateProtocolHandler(protocol, url, title);
1618
1619   ProtocolHandlerRegistry* registry =
1620       ProtocolHandlerRegistryFactory::GetForProfile(profile);
1621   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1622     return;
1623
1624   TabSpecificContentSettings* tab_content_settings =
1625       TabSpecificContentSettings::FromWebContents(web_contents);
1626   if (!user_gesture && window_) {
1627     tab_content_settings->set_pending_protocol_handler(handler);
1628     tab_content_settings->set_previous_protocol_handler(
1629         registry->GetHandlerFor(handler.protocol()));
1630     window_->GetLocationBar()->UpdateContentSettingsIcons();
1631     return;
1632   }
1633
1634   // Make sure content-setting icon is turned off in case the page does
1635   // ungestured and gestured RPH calls.
1636   if (window_) {
1637     tab_content_settings->ClearPendingProtocolHandler();
1638     window_->GetLocationBar()->UpdateContentSettingsIcons();
1639   }
1640
1641   PermissionBubbleManager* bubble_manager =
1642       PermissionBubbleManager::FromWebContents(web_contents);
1643   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1644     bubble_manager->AddRequest(
1645         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1646                                                      url, user_gesture));
1647   } else {
1648     RegisterProtocolHandlerInfoBarDelegate::Create(
1649         InfoBarService::FromWebContents(web_contents), registry, handler);
1650   }
1651 }
1652
1653 void Browser::UpdatePreferredSize(WebContents* source,
1654                                   const gfx::Size& pref_size) {
1655   window_->UpdatePreferredSize(source, pref_size);
1656 }
1657
1658 void Browser::ResizeDueToAutoResize(WebContents* source,
1659                                     const gfx::Size& new_size) {
1660   window_->ResizeDueToAutoResize(source, new_size);
1661 }
1662
1663 void Browser::FindReply(WebContents* web_contents,
1664                         int request_id,
1665                         int number_of_matches,
1666                         const gfx::Rect& selection_rect,
1667                         int active_match_ordinal,
1668                         bool final_update) {
1669   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1670   if (!find_tab_helper)
1671     return;
1672
1673   find_tab_helper->HandleFindReply(request_id,
1674                                    number_of_matches,
1675                                    selection_rect,
1676                                    active_match_ordinal,
1677                                    final_update);
1678 }
1679
1680 void Browser::RequestToLockMouse(WebContents* web_contents,
1681                                  bool user_gesture,
1682                                  bool last_unlocked_by_target) {
1683   fullscreen_controller_->RequestToLockMouse(web_contents,
1684                                              user_gesture,
1685                                              last_unlocked_by_target);
1686 }
1687
1688 void Browser::LostMouseLock() {
1689   fullscreen_controller_->LostMouseLock();
1690 }
1691
1692 void Browser::RequestMediaAccessPermission(
1693     content::WebContents* web_contents,
1694     const content::MediaStreamRequest& request,
1695     const content::MediaResponseCallback& callback) {
1696   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1697 }
1698
1699 bool Browser::RequestPpapiBrokerPermission(
1700     WebContents* web_contents,
1701     const GURL& url,
1702     const base::FilePath& plugin_path,
1703     const base::Callback<void(bool)>& callback) {
1704   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1705   return true;
1706 }
1707
1708 gfx::Size Browser::GetSizeForNewRenderView(
1709     const WebContents* web_contents) const {
1710   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1711   // would disappear on non-NTP pages, resulting in a bigger size for the new
1712   // render view.
1713   gfx::Size size = web_contents->GetView()->GetContainerSize();
1714   // Don't change render view size if bookmark bar is currently not detached,
1715   // or there's no pending entry, or navigating to a NTP page.
1716   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1717     return size;
1718   const NavigationEntry* pending_entry =
1719       web_contents->GetController().GetPendingEntry();
1720   if (pending_entry &&
1721       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1722     size.Enlarge(
1723         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1724   }
1725   return size;
1726 }
1727
1728 ///////////////////////////////////////////////////////////////////////////////
1729 // Browser, CoreTabHelperDelegate implementation:
1730
1731 void Browser::SwapTabContents(content::WebContents* old_contents,
1732                               content::WebContents* new_contents,
1733                               bool did_start_load,
1734                               bool did_finish_load) {
1735   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1736   DCHECK_NE(TabStripModel::kNoTab, index);
1737   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1738 }
1739
1740 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1741   return chrome::CanReload(this);
1742 }
1743
1744 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1745   return chrome::CanSavePage(this);
1746 }
1747
1748 ///////////////////////////////////////////////////////////////////////////////
1749 // Browser, SearchEngineTabHelperDelegate implementation:
1750
1751 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1752                                        Profile* profile) {
1753   window()->ConfirmAddSearchProvider(template_url, profile);
1754 }
1755
1756 ///////////////////////////////////////////////////////////////////////////////
1757 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1758
1759 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1760                                     bool blocked) {
1761   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1762   if (index == TabStripModel::kNoTab) {
1763     NOTREACHED();
1764     return;
1765   }
1766   tab_strip_model_->SetTabBlocked(index, blocked);
1767   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1768     web_contents->GetView()->Focus();
1769 }
1770
1771 web_modal::WebContentsModalDialogHost*
1772 Browser::GetWebContentsModalDialogHost() {
1773   return window_->GetWebContentsModalDialogHost();
1774 }
1775
1776 ///////////////////////////////////////////////////////////////////////////////
1777 // Browser, BookmarkTabHelperDelegate implementation:
1778
1779 void Browser::URLStarredChanged(content::WebContents* web_contents,
1780                                 bool starred) {
1781   if (web_contents == tab_strip_model_->GetActiveWebContents())
1782     window_->SetStarredState(starred);
1783 }
1784
1785 ///////////////////////////////////////////////////////////////////////////////
1786 // Browser, ZoomObserver implementation:
1787
1788 void Browser::OnZoomChanged(content::WebContents* source,
1789                             bool can_show_bubble) {
1790   if (source == tab_strip_model_->GetActiveWebContents()) {
1791     // Only show the zoom bubble for zoom changes in the active window.
1792     window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive() &&
1793         !is_devtools());
1794   }
1795 }
1796
1797 ///////////////////////////////////////////////////////////////////////////////
1798 // Browser, ui::SelectFileDialog::Listener implementation:
1799
1800 void Browser::FileSelected(const base::FilePath& path, int index,
1801                            void* params) {
1802   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1803 }
1804
1805 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1806                                         int index,
1807                                         void* params) {
1808   profile_->set_last_selected_directory(file_info.file_path.DirName());
1809
1810   GURL url = net::FilePathToFileURL(file_info.local_path);
1811
1812 #if defined(OS_CHROMEOS)
1813   drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1814 #endif
1815
1816   if (url.is_empty())
1817     return;
1818
1819   OpenURL(OpenURLParams(
1820       url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1821 }
1822
1823 ///////////////////////////////////////////////////////////////////////////////
1824 // Browser, content::NotificationObserver implementation:
1825
1826 void Browser::Observe(int type,
1827                       const content::NotificationSource& source,
1828                       const content::NotificationDetails& details) {
1829   switch (type) {
1830     case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
1831       chrome::UpdateCommandEnabled(
1832           this,
1833           IDC_BOOKMARK_PAGE,
1834           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1835       chrome::UpdateCommandEnabled(
1836           this,
1837           IDC_BOOKMARK_ALL_TABS,
1838           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1839
1840       if (window()->GetLocationBar())
1841         window()->GetLocationBar()->UpdatePageActions();
1842
1843       const extensions::UnloadedExtensionInfo* extension_info =
1844           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1845
1846       // Close any tabs from the unloaded extension, unless it's terminated,
1847       // in which case let the sad tabs remain.
1848       if (extension_info->reason !=
1849           extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1850         const Extension* extension = extension_info->extension;
1851         // Iterate backwards as we may remove items while iterating.
1852         for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1853           WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1854           // Two cases are handled here:
1855           // - The scheme check is for when an extension page is loaded in a
1856           //   tab, e.g. chrome-extension://id/page.html.
1857           // - The extension_app check is for apps, which can have non-extension
1858           //   schemes, e.g. https://mail.google.com if you have the Gmail app
1859           //   installed.
1860           if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1861                web_contents->GetURL().host() == extension->id()) ||
1862               (extensions::TabHelper::FromWebContents(
1863                    web_contents)->extension_app() == extension)) {
1864             tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1865           }
1866         }
1867       }
1868       break;
1869     }
1870
1871     case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1872       Profile* profile = content::Source<Profile>(source).ptr();
1873       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1874         window()->GetLocationBar()->InvalidatePageActions();
1875       break;
1876     }
1877
1878     case chrome::NOTIFICATION_EXTENSION_LOADED:
1879       chrome::UpdateCommandEnabled(
1880           this,
1881           IDC_BOOKMARK_PAGE,
1882           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1883       chrome::UpdateCommandEnabled(
1884           this,
1885           IDC_BOOKMARK_ALL_TABS,
1886           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1887     // fallthrough
1888     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
1889       // During window creation on Windows we may end up calling into
1890       // SHAppBarMessage, which internally spawns a nested message loop. This
1891       // makes it possible for us to end up here before window creation has
1892       // completed, at which point window_ is NULL. See 94752 for details.
1893       if (window() && window()->GetLocationBar())
1894         window()->GetLocationBar()->UpdatePageActions();
1895       break;
1896
1897 #if defined(ENABLE_THEMES)
1898     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
1899       window()->UserChangedTheme();
1900       break;
1901 #endif
1902
1903     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
1904       WebContents* web_contents = content::Source<WebContents>(source).ptr();
1905       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
1906         LocationBar* location_bar = window()->GetLocationBar();
1907         if (location_bar)
1908           location_bar->UpdateContentSettingsIcons();
1909       }
1910       break;
1911     }
1912
1913     default:
1914       NOTREACHED() << "Got a notification we didn't register for.";
1915   }
1916 }
1917
1918 ///////////////////////////////////////////////////////////////////////////////
1919 // Browser, Command and state updating (private):
1920
1921 void Browser::OnDevToolsDisabledChanged() {
1922   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
1923     content::DevToolsManager::GetInstance()->CloseAllClientHosts();
1924 }
1925
1926 ///////////////////////////////////////////////////////////////////////////////
1927 // Browser, UI update coalescing and handling (private):
1928
1929 void Browser::UpdateToolbar(bool should_restore_state) {
1930   window_->UpdateToolbar(should_restore_state ?
1931       tab_strip_model_->GetActiveWebContents() : NULL);
1932 }
1933
1934 void Browser::ScheduleUIUpdate(const WebContents* source,
1935                                unsigned changed_flags) {
1936   DCHECK(source);
1937   int index = tab_strip_model_->GetIndexOfWebContents(source);
1938   DCHECK_NE(TabStripModel::kNoTab, index);
1939
1940   // Do some synchronous updates.
1941   if (changed_flags & content::INVALIDATE_TYPE_URL &&
1942       source == tab_strip_model_->GetActiveWebContents()) {
1943     // Only update the URL for the current tab. Note that we do not update
1944     // the navigation commands since those would have already been updated
1945     // synchronously by NavigationStateChanged.
1946     UpdateToolbar(false);
1947     changed_flags &= ~content::INVALIDATE_TYPE_URL;
1948   }
1949   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
1950     // Update the loading state synchronously. This is so the throbber will
1951     // immediately start/stop, which gives a more snappy feel. We want to do
1952     // this for any tab so they start & stop quickly.
1953     tab_strip_model_->UpdateWebContentsStateAt(
1954         tab_strip_model_->GetIndexOfWebContents(source),
1955         TabStripModelObserver::LOADING_ONLY);
1956     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
1957     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
1958     // changed_flags.
1959   }
1960
1961   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
1962     // To correctly calculate whether the title changed while not loading
1963     // we need to process the update synchronously. This state only matters for
1964     // the TabStripModel, so we notify the TabStripModel now and notify others
1965     // asynchronously.
1966     tab_strip_model_->UpdateWebContentsStateAt(
1967         tab_strip_model_->GetIndexOfWebContents(source),
1968         TabStripModelObserver::TITLE_NOT_LOADING);
1969   }
1970
1971   // If the only updates were synchronously handled above, we're done.
1972   if (changed_flags == 0)
1973     return;
1974
1975   // Save the dirty bits.
1976   scheduled_updates_[source] |= changed_flags;
1977
1978   if (!chrome_updater_factory_.HasWeakPtrs()) {
1979     // No task currently scheduled, start another.
1980     base::MessageLoop::current()->PostDelayedTask(
1981         FROM_HERE,
1982         base::Bind(&Browser::ProcessPendingUIUpdates,
1983                    chrome_updater_factory_.GetWeakPtr()),
1984         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
1985   }
1986 }
1987
1988 void Browser::ProcessPendingUIUpdates() {
1989 #ifndef NDEBUG
1990   // Validate that all tabs we have pending updates for exist. This is scary
1991   // because the pending list must be kept in sync with any detached or
1992   // deleted tabs.
1993   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
1994        i != scheduled_updates_.end(); ++i) {
1995     bool found = false;
1996     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
1997       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
1998         found = true;
1999         break;
2000       }
2001     }
2002     DCHECK(found);
2003   }
2004 #endif
2005
2006   chrome_updater_factory_.InvalidateWeakPtrs();
2007
2008   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2009        i != scheduled_updates_.end(); ++i) {
2010     // Do not dereference |contents|, it may be out-of-date!
2011     const WebContents* contents = i->first;
2012     unsigned flags = i->second;
2013
2014     if (contents == tab_strip_model_->GetActiveWebContents()) {
2015       // Updates that only matter when the tab is selected go here.
2016
2017       if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
2018         LocationBar* location_bar = window()->GetLocationBar();
2019         if (location_bar)
2020           location_bar->UpdatePageActions();
2021       }
2022       // Updating the URL happens synchronously in ScheduleUIUpdate.
2023       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2024         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2025             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2026       }
2027
2028       if (flags & (content::INVALIDATE_TYPE_TAB |
2029                    content::INVALIDATE_TYPE_TITLE)) {
2030         window_->UpdateTitleBar();
2031       }
2032     }
2033
2034     // Updates that don't depend upon the selected state go here.
2035     if (flags &
2036         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2037       tab_strip_model_->UpdateWebContentsStateAt(
2038           tab_strip_model_->GetIndexOfWebContents(contents),
2039           TabStripModelObserver::ALL);
2040     }
2041
2042     // Update the bookmark bar. It may happen that the tab is crashed, and if
2043     // so, the bookmark bar should be hidden.
2044     if (flags & content::INVALIDATE_TYPE_TAB)
2045       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2046
2047     // We don't need to process INVALIDATE_STATE, since that's not visible.
2048   }
2049
2050   scheduled_updates_.clear();
2051 }
2052
2053 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2054   if (!contents)
2055     return;
2056
2057   UpdateMap::iterator i = scheduled_updates_.find(contents);
2058   if (i != scheduled_updates_.end())
2059     scheduled_updates_.erase(i);
2060 }
2061
2062 ///////////////////////////////////////////////////////////////////////////////
2063 // Browser, Getters for UI (private):
2064
2065 StatusBubble* Browser::GetStatusBubble() {
2066   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2067   if (chrome::IsRunningInAppMode())
2068     return NULL;
2069
2070   return window_ ? window_->GetStatusBubble() : NULL;
2071 }
2072
2073 ///////////////////////////////////////////////////////////////////////////////
2074 // Browser, Session restore functions (private):
2075
2076 void Browser::SyncHistoryWithTabs(int index) {
2077   SessionService* session_service =
2078       SessionServiceFactory::GetForProfileIfExisting(profile());
2079   if (session_service) {
2080     for (int i = index; i < tab_strip_model_->count(); ++i) {
2081       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2082       if (web_contents) {
2083         SessionTabHelper* session_tab_helper =
2084             SessionTabHelper::FromWebContents(web_contents);
2085         session_service->SetTabIndexInWindow(
2086             session_id(), session_tab_helper->session_id(), i);
2087         session_service->SetPinnedState(
2088             session_id(),
2089             session_tab_helper->session_id(),
2090             tab_strip_model_->IsTabPinned(i));
2091       }
2092     }
2093   }
2094 }
2095
2096 ///////////////////////////////////////////////////////////////////////////////
2097 // Browser, In-progress download termination handling (private):
2098
2099 bool Browser::CanCloseWithInProgressDownloads() {
2100   // If we've prompted, we need to hear from the user before we
2101   // can close.
2102   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2103     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2104
2105   int num_downloads_blocking;
2106   Browser::DownloadClosePreventionType dialog_type =
2107       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2108   if (dialog_type == DOWNLOAD_CLOSE_OK)
2109     return true;
2110
2111   // Closing this window will kill some downloads; prompt to make sure
2112   // that's ok.
2113   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2114   window_->ConfirmBrowserCloseWithPendingDownloads(
2115       num_downloads_blocking,
2116       dialog_type,
2117       false,
2118       base::Bind(&Browser::InProgressDownloadResponse,
2119                  weak_factory_.GetWeakPtr()));
2120
2121   // Return false so the browser does not close.  We'll close if the user
2122   // confirms in the dialog.
2123   return false;
2124 }
2125
2126 ///////////////////////////////////////////////////////////////////////////////
2127 // Browser, Assorted utility functions (private):
2128
2129 void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
2130   // WebContents...
2131   web_contents->SetDelegate(delegate);
2132
2133   // ...and all the helpers.
2134   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2135   WebContentsModalDialogManager::FromWebContents(web_contents)->
2136       SetDelegate(delegate);
2137   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2138   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2139   ZoomController::FromWebContents(web_contents)->set_observer(delegate);
2140   TranslateTabHelper* translate_tab_helper =
2141       TranslateTabHelper::FromWebContents(web_contents);
2142   translate_tab_helper->translate_driver().set_observer(
2143       delegate ? delegate->translate_driver_observer_.get() : NULL);
2144 }
2145
2146 void Browser::CloseFrame() {
2147   window_->Close();
2148 }
2149
2150 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2151                                 int index,
2152                                 DetachType type) {
2153   if (type == DETACH_TYPE_DETACH) {
2154     // Save the current location bar state, but only if the tab being detached
2155     // is the selected tab.  Because saving state can conditionally revert the
2156     // location bar, saving the current tab's location bar state to a
2157     // non-selected tab can corrupt both tabs.
2158     if (contents == tab_strip_model_->GetActiveWebContents()) {
2159       LocationBar* location_bar = window()->GetLocationBar();
2160       if (location_bar)
2161         location_bar->SaveStateToContents(contents);
2162     }
2163
2164     if (!tab_strip_model_->closing_all())
2165       SyncHistoryWithTabs(0);
2166   }
2167
2168   SetAsDelegate(contents, NULL);
2169   RemoveScheduledUpdatesFor(contents);
2170
2171   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2172     find_bar_controller_->ChangeWebContents(NULL);
2173   }
2174
2175   // Stop observing search model changes for this tab.
2176   search_delegate_->OnTabDetached(contents);
2177
2178   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2179     if (interstitial_observers_[i]->web_contents() != contents)
2180       continue;
2181
2182     delete interstitial_observers_[i];
2183     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2184     return;
2185   }
2186 }
2187
2188 bool Browser::ShouldShowLocationBar() const {
2189   if (!is_app()) {
2190     // Hide the URL for singleton settings windows.
2191     // TODO(stevenjb): We could avoid this check by setting a Browser
2192     // property for "system" windows, possibly shared with hosted app windows.
2193     // crbug.com/350128.
2194     if (chrome::IsSettingsWindow(this))
2195       return false;
2196     return true;
2197   }
2198
2199   // Normally apps do not show a location bar.
2200   if (app_type() != APP_TYPE_HOST ||
2201       app_name() == DevToolsWindow::kDevToolsApp ||
2202       !CommandLine::ForCurrentProcess()->HasSwitch(
2203           switches::kEnableStreamlinedHostedApps))
2204     return false;
2205
2206   // If kEnableStreamlinedHostedApps is true, show the locaiton bar for non
2207   // legacy packaged apps.
2208   ExtensionService* service =
2209       extensions::ExtensionSystem::Get(profile_)->extension_service();
2210   const extensions::Extension* extension =
2211       service ? service->GetInstalledExtension(
2212                     web_app::GetExtensionIdFromApplicationName(app_name()))
2213               : NULL;
2214   return (!extension || !extension->is_legacy_packaged_app());
2215 }
2216
2217 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2218                                         bool check_fullscreen) const {
2219   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2220
2221   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2222
2223   if (is_type_tabbed())
2224     features |= FEATURE_BOOKMARKBAR;
2225
2226   if (!hide_ui_for_fullscreen) {
2227     if (!is_type_tabbed())
2228       features |= FEATURE_TITLEBAR;
2229
2230     if (is_type_tabbed())
2231       features |= FEATURE_TABSTRIP;
2232
2233     if (is_type_tabbed())
2234       features |= FEATURE_TOOLBAR;
2235
2236     if (ShouldShowLocationBar())
2237       features |= FEATURE_LOCATIONBAR;
2238   }
2239   return !!(features & feature);
2240 }
2241
2242 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2243   BookmarkBar::State state;
2244   // The bookmark bar is hidden in fullscreen mode, unless on the new tab page.
2245   if (browser_defaults::bookmarks_enabled &&
2246       profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
2247       !ShouldHideUIForFullscreen()) {
2248     state = BookmarkBar::SHOW;
2249   } else {
2250     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2251     BookmarkTabHelper* bookmark_tab_helper =
2252         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2253     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2254       state = BookmarkBar::DETACHED;
2255     else
2256       state = BookmarkBar::HIDDEN;
2257   }
2258
2259   if (state == bookmark_bar_state_)
2260     return;
2261
2262   bookmark_bar_state_ = state;
2263
2264   if (!window_)
2265     return;  // This is called from the constructor when window_ is NULL.
2266
2267   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2268     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2269     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2270     // end up querying state once they process the tab switch.
2271     return;
2272   }
2273
2274   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2275   window_->BookmarkBarStateChanged(shouldAnimate ?
2276       BookmarkBar::ANIMATE_STATE_CHANGE :
2277       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2278 }
2279
2280 bool Browser::ShouldHideUIForFullscreen() const {
2281   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2282   // keep the controls in a slide-down panel.
2283   return window_ && window_->ShouldHideUIForFullscreen();
2284 }
2285
2286 bool Browser::MaybeCreateBackgroundContents(
2287     int route_id,
2288     WebContents* opener_web_contents,
2289     const base::string16& frame_name,
2290     const GURL& target_url,
2291     const std::string& partition_id,
2292     content::SessionStorageNamespace* session_storage_namespace) {
2293   GURL opener_url = opener_web_contents->GetURL();
2294   ExtensionService* extensions_service =
2295       extensions::ExtensionSystem::Get(profile_)->extension_service();
2296
2297   if (!opener_url.is_valid() ||
2298       frame_name.empty() ||
2299       !extensions_service ||
2300       !extensions_service->is_ready())
2301     return false;
2302
2303   // Only hosted apps have web extents, so this ensures that only hosted apps
2304   // can create BackgroundContents. We don't have to check for background
2305   // permission as that is checked in RenderMessageFilter when the CreateWindow
2306   // message is processed.
2307   const Extension* extension =
2308       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2309   if (!extension)
2310     return false;
2311
2312   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2313   BackgroundContentsService* service =
2314       BackgroundContentsServiceFactory::GetForProfile(profile_);
2315   if (!service)
2316     return false;
2317
2318   // Ensure that we're trying to open this from the extension's process.
2319   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2320   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2321   if (!opener_site_instance->GetProcess() ||
2322       !process_map->Contains(
2323           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2324     return false;
2325   }
2326
2327   // Only allow a single background contents per app.
2328   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2329   BackgroundContents* existing =
2330       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2331   if (existing) {
2332     // For non-scriptable background contents, ignore the request altogether,
2333     // (returning true, so that a regular WebContents isn't created either).
2334     if (!allow_js_access)
2335       return true;
2336     // For scriptable background pages, if one already exists, close it (even
2337     // if it was specified in the manifest).
2338     delete existing;
2339   }
2340
2341   // If script access is not allowed, create the the background contents in a
2342   // new SiteInstance, so that a separate process is used.
2343   scoped_refptr<content::SiteInstance> site_instance =
2344       allow_js_access ?
2345       opener_site_instance :
2346       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2347
2348   // Passed all the checks, so this should be created as a BackgroundContents.
2349   BackgroundContents* contents =
2350       service->CreateBackgroundContents(site_instance.get(),
2351                                         route_id,
2352                                         profile_,
2353                                         frame_name,
2354                                         base::ASCIIToUTF16(extension->id()),
2355                                         partition_id,
2356                                         session_storage_namespace);
2357
2358   // When a separate process is used, the original renderer cannot access the
2359   // new window later, thus we need to navigate the window now.
2360   if (contents && !allow_js_access) {
2361     contents->web_contents()->GetController().LoadURL(
2362         target_url,
2363         content::Referrer(),
2364         content::PAGE_TRANSITION_LINK,
2365         std::string());  // No extra headers.
2366   }
2367
2368   return contents != NULL;
2369 }