chrome/browser/ui/browser.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/browser.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #include <shellapi.h>
  10 #endif  // defined(OS_WIN)
  11
  12 #include <algorithm>
  13 #include <string>
  14
  15 #include "base/base_paths.h"
  16 #include "base/bind.h"
  17 #include "base/command_line.h"
  18 #include "base/logging.h"
  19 #include "base/metrics/histogram.h"
  20 #include "base/prefs/pref_service.h"
  21 #include "base/process/process_info.h"
  22 #include "base/profiler/scoped_tracker.h"
  23 #include "base/strings/string_number_conversions.h"
  24 #include "base/strings/string_util.h"
  25 #include "base/strings/stringprintf.h"
  26 #include "base/strings/utf_string_conversions.h"
  27 #include "base/threading/thread.h"
  28 #include "base/threading/thread_restrictions.h"
  29 #include "base/time/time.h"
  30 #include "chrome/app/chrome_command_ids.h"
  31 #include "chrome/browser/app_mode/app_mode_utils.h"
  32 #include "chrome/browser/autofill/personal_data_manager_factory.h"
  33 #include "chrome/browser/background/background_contents.h"
  34 #include "chrome/browser/background/background_contents_service.h"
  35 #include "chrome/browser/background/background_contents_service_factory.h"
  36 #include "chrome/browser/browser_process.h"
  37 #include "chrome/browser/browser_shutdown.h"
  38 #include "chrome/browser/browsing_data/browsing_data_helper.h"
  39 #include "chrome/browser/browsing_data/browsing_data_remover.h"
  40 #include "chrome/browser/character_encoding.h"
  41 #include "chrome/browser/chrome_notification_types.h"
  42 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
  43 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
  44 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
  45 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
  46 #include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
  47 #include "chrome/browser/defaults.h"
  48 #include "chrome/browser/devtools/devtools_toggle_action.h"
  49 #include "chrome/browser/devtools/devtools_window.h"
  50 #include "chrome/browser/download/download_item_model.h"
  51 #include "chrome/browser/download/download_service.h"
  52 #include "chrome/browser/download/download_service_factory.h"
  53 #include "chrome/browser/download/download_shelf.h"
  54 #include "chrome/browser/extensions/api/tabs/tabs_event_router.h"
  55 #include "chrome/browser/extensions/api/tabs/tabs_windows_api.h"
  56 #include "chrome/browser/extensions/browser_extension_window_controller.h"
  57 #include "chrome/browser/extensions/extension_service.h"
  58 #include "chrome/browser/extensions/extension_ui_util.h"
  59 #include "chrome/browser/extensions/extension_util.h"
  60 #include "chrome/browser/extensions/tab_helper.h"
  61 #include "chrome/browser/favicon/favicon_tab_helper.h"
  62 #include "chrome/browser/file_select_helper.h"
  63 #include "chrome/browser/first_run/first_run.h"
  64 #include "chrome/browser/history/top_sites_factory.h"
  65 #include "chrome/browser/infobars/infobar_service.h"
  66 #include "chrome/browser/lifetime/application_lifetime.h"
  67 #include "chrome/browser/notifications/notification_ui_manager.h"
  68 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  69 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  70 #include "chrome/browser/profiles/profile.h"
  71 #include "chrome/browser/profiles/profile_destroyer.h"
  72 #include "chrome/browser/profiles/profile_metrics.h"
  73 #include "chrome/browser/repost_form_warning_controller.h"
  74 #include "chrome/browser/search/search.h"
  75 #include "chrome/browser/sessions/session_service.h"
  76 #include "chrome/browser/sessions/session_service_factory.h"
  77 #include "chrome/browser/sessions/session_tab_helper.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/sync/profile_sync_service.h"
  81 #include "chrome/browser/sync/profile_sync_service_factory.h"
  82 #include "chrome/browser/sync/sync_ui_util.h"
  83 #include "chrome/browser/tab_contents/retargeting_details.h"
  84 #include "chrome/browser/tab_contents/tab_util.h"
  85 #include "chrome/browser/themes/theme_service.h"
  86 #include "chrome/browser/themes/theme_service_factory.h"
  87 #include "chrome/browser/translate/chrome_translate_client.h"
  88 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
  89 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  90 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  91 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  92 #include "chrome/browser/ui/browser_command_controller.h"
  93 #include "chrome/browser/ui/browser_commands.h"
  94 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  95 #include "chrome/browser/ui/browser_dialogs.h"
  96 #include "chrome/browser/ui/browser_finder.h"
  97 #include "chrome/browser/ui/browser_instant_controller.h"
  98 #include "chrome/browser/ui/browser_iterator.h"
  99 #include "chrome/browser/ui/browser_list.h"
 100 #include "chrome/browser/ui/browser_navigator.h"
 101 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 102 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 103 #include "chrome/browser/ui/browser_tabstrip.h"
 104 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 105 #include "chrome/browser/ui/browser_ui_prefs.h"
 106 #include "chrome/browser/ui/browser_window.h"
 107 #include "chrome/browser/ui/chrome_pages.h"
 108 #include "chrome/browser/ui/chrome_select_file_policy.h"
 109 #include "chrome/browser/ui/exclusive_access/fullscreen_controller.h"
 110 #include "chrome/browser/ui/exclusive_access/mouse_lock_controller.h"
 111 #include "chrome/browser/ui/extensions/bookmark_app_browser_controller.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/global_error/global_error.h"
 117 #include "chrome/browser/ui/global_error/global_error_service.h"
 118 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 119 #include "chrome/browser/ui/location_bar/location_bar.h"
 120 #include "chrome/browser/ui/media_utils.h"
 121 #include "chrome/browser/ui/search/search_delegate.h"
 122 #include "chrome/browser/ui/search/search_model.h"
 123 #include "chrome/browser/ui/search/search_tab_helper.h"
 124 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 125 #include "chrome/browser/ui/settings_window_manager.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_dialogs.h"
 131 #include "chrome/browser/ui/tab_helpers.h"
 132 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 133 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 134 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 135 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 136 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 137 #include "chrome/browser/ui/unload_controller.h"
 138 #include "chrome/browser/ui/validation_message_bubble.h"
 139 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 140 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 141 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 142 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 143 #include "chrome/browser/upgrade_detector.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/pref_names.h"
 148 #include "chrome/common/profiling.h"
 149 #include "chrome/common/search_types.h"
 150 #include "chrome/common/url_constants.h"
 151 #include "chrome/grit/chromium_strings.h"
 152 #include "chrome/grit/generated_resources.h"
 153 #include "chrome/grit/locale_settings.h"
 154 #include "components/app_modal/javascript_dialog_manager.h"
 155 #include "components/bookmarks/browser/bookmark_model.h"
 156 #include "components/bookmarks/browser/bookmark_utils.h"
 157 #include "components/content_settings/core/browser/host_content_settings_map.h"
 158 #include "components/history/core/browser/top_sites.h"
 159 #include "components/infobars/core/simple_alert_infobar_delegate.h"
 160 #include "components/search/search.h"
 161 #include "components/sessions/session_types.h"
 162 #include "components/startup_metric_utils/startup_metric_utils.h"
 163 #include "components/translate/core/browser/language_state.h"
 164 #include "components/ui/zoom/zoom_controller.h"
 165 #include "components/web_modal/popup_manager.h"
 166 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 167 #include "content/public/browser/devtools_agent_host.h"
 168 #include "content/public/browser/download_item.h"
 169 #include "content/public/browser/download_manager.h"
 170 #include "content/public/browser/interstitial_page.h"
 171 #include "content/public/browser/invalidate_type.h"
 172 #include "content/public/browser/navigation_controller.h"
 173 #include "content/public/browser/navigation_entry.h"
 174 #include "content/public/browser/notification_details.h"
 175 #include "content/public/browser/notification_service.h"
 176 #include "content/public/browser/plugin_service.h"
 177 #include "content/public/browser/render_process_host.h"
 178 #include "content/public/browser/render_view_host.h"
 179 #include "content/public/browser/render_widget_host_view.h"
 180 #include "content/public/browser/site_instance.h"
 181 #include "content/public/browser/user_metrics.h"
 182 #include "content/public/browser/web_contents.h"
 183 #include "content/public/common/content_switches.h"
 184 #include "content/public/common/page_zoom.h"
 185 #include "content/public/common/renderer_preferences.h"
 186 #include "content/public/common/webplugininfo.h"
 187 #include "extensions/browser/extension_prefs.h"
 188 #include "extensions/browser/extension_registry.h"
 189 #include "extensions/browser/extension_system.h"
 190 #include "extensions/common/constants.h"
 191 #include "extensions/common/extension.h"
 192 #include "extensions/common/manifest_handlers/background_info.h"
 193 #include "net/base/filename_util.h"
 194 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 195 #include "net/cookies/cookie_monster.h"
 196 #include "net/url_request/url_request_context.h"
 197 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 198 #include "ui/base/l10n/l10n_util.h"
 199 #include "ui/base/window_open_disposition.h"
 200 #include "ui/gfx/geometry/point.h"
 201 #include "ui/shell_dialogs/selected_file_info.h"
 202
 203 #if defined(OS_WIN)
 204 #include "base/win/metro.h"
 205 #include "chrome/browser/ssl/ssl_error_info.h"
 206 #include "chrome/browser/task_manager/task_manager.h"
 207 #include "chrome/browser/ui/view_ids.h"
 208 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 209 #include "components/browser_watcher/exit_funnel_win.h"
 210 #include "ui/base/touch/touch_device.h"
 211 #include "ui/base/win/shell.h"
 212 #endif  // OS_WIN
 213
 214 #if defined(OS_CHROMEOS)
 215 #include "chrome/browser/chromeos/fileapi/external_file_url_util.h"
 216 #endif
 217
 218 #if defined(USE_ASH)
 219 #include "ash/ash_switches.h"
 220 #endif
 221
 222 using base::TimeDelta;
 223 using base::UserMetricsAction;
 224 using content::NativeWebKeyboardEvent;
 225 using content::NavigationController;
 226 using content::NavigationEntry;
 227 using content::OpenURLParams;
 228 using content::PluginService;
 229 using content::Referrer;
 230 using content::RenderWidgetHostView;
 231 using content::SiteInstance;
 232 using content::WebContents;
 233 using extensions::Extension;
 234 using ui::WebDialogDelegate;
 235 using web_modal::WebContentsModalDialogManager;
 236 using blink::WebWindowFeatures;
 237
 238 ///////////////////////////////////////////////////////////////////////////////
 239
 240 namespace {
 241
 242 // How long we wait before updating the browser chrome while loading a page.
 243 const int kUIUpdateCoalescingTimeMS = 200;
 244
 245 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 246   return BrowserWindow::CreateBrowserWindow(browser);
 247 }
 248
 249 // Is the fast tab unload experiment enabled?
 250 bool IsFastTabUnloadEnabled() {
 251   return base::CommandLine::ForCurrentProcess()->HasSwitch(
 252       switches::kEnableFastUnload);
 253 }
 254
 255 }  // namespace
 256
 257 ////////////////////////////////////////////////////////////////////////////////
 258 // Browser, CreateParams:
 259
 260 Browser::CreateParams::CreateParams(Profile* profile,
 261                                     chrome::HostDesktopType host_desktop_type)
 262     : type(TYPE_TABBED),
 263       profile(profile),
 264       host_desktop_type(host_desktop_type),
 265       trusted_source(false),
 266       initial_show_state(ui::SHOW_STATE_DEFAULT),
 267       is_session_restore(false),
 268       window(NULL) {
 269 }
 270
 271 Browser::CreateParams::CreateParams(Type type,
 272                                     Profile* profile,
 273                                     chrome::HostDesktopType host_desktop_type)
 274     : type(type),
 275       profile(profile),
 276       host_desktop_type(host_desktop_type),
 277       trusted_source(false),
 278       initial_show_state(ui::SHOW_STATE_DEFAULT),
 279       is_session_restore(false),
 280       window(NULL) {
 281 }
 282
 283 // static
 284 Browser::CreateParams Browser::CreateParams::CreateForApp(
 285     const std::string& app_name,
 286     bool trusted_source,
 287     const gfx::Rect& window_bounds,
 288     Profile* profile,
 289     chrome::HostDesktopType host_desktop_type) {
 290   DCHECK(!app_name.empty());
 291
 292   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 293   params.app_name = app_name;
 294   params.trusted_source = trusted_source;
 295   params.initial_bounds = window_bounds;
 296
 297   return params;
 298 }
 299
 300 // static
 301 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 302     Profile* profile,
 303     chrome::HostDesktopType host_desktop_type) {
 304   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 305   params.app_name = DevToolsWindow::kDevToolsApp;
 306   params.trusted_source = true;
 307   return params;
 308 }
 309
 310 ////////////////////////////////////////////////////////////////////////////////
 311 // Browser, InterstitialObserver:
 312
 313 class Browser::InterstitialObserver : public content::WebContentsObserver {
 314  public:
 315   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 316       : WebContentsObserver(web_contents),
 317         browser_(browser) {
 318   }
 319
 320   void DidAttachInterstitialPage() override {
 321     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 322   }
 323
 324   void DidDetachInterstitialPage() override {
 325     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 326   }
 327
 328  private:
 329   Browser* browser_;
 330
 331   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 332 };
 333
 334 ///////////////////////////////////////////////////////////////////////////////
 335 // Browser, Constructors, Creation, Showing:
 336
 337 Browser::Browser(const CreateParams& params)
 338     : extension_registry_observer_(this),
 339       type_(params.type),
 340       profile_(params.profile),
 341       window_(NULL),
 342       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 343       tab_strip_model_(
 344           new TabStripModel(tab_strip_model_delegate_.get(), params.profile)),
 345       app_name_(params.app_name),
 346       is_trusted_source_(params.trusted_source),
 347       cancel_download_confirmation_state_(NOT_PROMPTED),
 348       override_bounds_(params.initial_bounds),
 349       initial_show_state_(params.initial_show_state),
 350       is_session_restore_(params.is_session_restore),
 351       host_desktop_type_(
 352           BrowserWindow::AdjustHostDesktopType(params.host_desktop_type)),
 353       content_setting_bubble_model_delegate_(
 354           new BrowserContentSettingBubbleModelDelegate(this)),
 355       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 356       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 357       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 358       bookmark_bar_state_(BookmarkBar::HIDDEN),
 359       command_controller_(new chrome::BrowserCommandController(this)),
 360       window_has_shown_(false),
 361       chrome_updater_factory_(this),
 362       weak_factory_(this) {
 363   // If this causes a crash then a window is being opened using a profile type
 364   // that is disallowed by policy. The crash prevents the disabled window type
 365   // from opening at all, but the path that triggered it should be fixed.
 366   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 367   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 368       << "Only off the record browser may be opened in guest mode";
 369
 370   // TODO(jeremy): Move to initializer list once flag is removed.
 371   if (IsFastTabUnloadEnabled())
 372     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 373   else
 374     unload_controller_.reset(new chrome::UnloadController(this));
 375
 376   tab_strip_model_->AddObserver(this);
 377
 378   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 379   search_model_.reset(new SearchModel());
 380   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 381
 382   extension_registry_observer_.Add(
 383       extensions::ExtensionRegistry::Get(profile_));
 384   registrar_.Add(this,
 385                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 386                  content::NotificationService::AllSources());
 387 #if defined(ENABLE_THEMES)
 388   registrar_.Add(
 389       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 390       content::Source<ThemeService>(
 391           ThemeServiceFactory::GetForProfile(profile_)));
 392 #endif
 393   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 394                  content::NotificationService::AllSources());
 395
 396   profile_pref_registrar_.Init(profile_->GetPrefs());
 397   profile_pref_registrar_.Add(
 398       prefs::kDevToolsDisabled,
 399       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 400   profile_pref_registrar_.Add(
 401       bookmarks::prefs::kShowBookmarkBar,
 402       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 403                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 404
 405   BrowserList::AddBrowser(this);
 406
 407   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 408   // or you'll get a nasty surprise when you run the incognito tests.
 409   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 410                              profile_->GetPrefs());
 411
 412   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 413     instant_controller_.reset(new BrowserInstantController(this));
 414
 415   if (extensions::BookmarkAppBrowserController::IsForBookmarkApp(this)) {
 416     bookmark_app_controller_.reset(
 417         new extensions::BookmarkAppBrowserController(this));
 418   }
 419
 420   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 421
 422   ProfileMetrics::LogProfileLaunch(profile_);
 423
 424   window_ = params.window ? params.window : CreateBrowserWindow(this);
 425
 426   if (bookmark_app_controller_)
 427     bookmark_app_controller_->UpdateLocationBarVisibility(false);
 428
 429   // Create the extension window controller before sending notifications.
 430   extension_window_controller_.reset(
 431       new BrowserExtensionWindowController(this));
 432
 433   SessionService* session_service =
 434       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 435   if (session_service)
 436     session_service->WindowOpened(this);
 437
 438   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 439   //             replace uses of this with BL's notifications.
 440   content::NotificationService::current()->Notify(
 441       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 442       content::Source<Browser>(this),
 443       content::NotificationService::NoDetails());
 444
 445   // TODO(beng): move to ChromeBrowserMain:
 446   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 447 #if defined(OS_WIN)
 448     // Notify PDM that this is a first run.
 449     ImportAutofillDataWin(
 450         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 451 #endif  // defined(OS_WIN)
 452   }
 453
 454   exclusive_access_manager_.reset(
 455       new ExclusiveAccessManager(window_->GetExclusiveAccessContext()));
 456
 457   // Must be initialized after window_.
 458   // Also: surprise! a modal dialog host is not necessary to host modal dialogs
 459   // without a modal dialog host, so that value may be null.
 460   popup_manager_.reset(new web_modal::PopupManager(
 461       GetWebContentsModalDialogHost()));
 462 }
 463
 464 Browser::~Browser() {
 465   // Stop observing notifications before continuing with destruction. Profile
 466   // destruction will unload extensions and reentrant calls to Browser:: should
 467   // be avoided while it is being torn down.
 468   registrar_.RemoveAll();
 469   extension_registry_observer_.RemoveAll();
 470
 471   // The tab strip should not have any tabs at this point.
 472   DCHECK(tab_strip_model_->empty());
 473   tab_strip_model_->RemoveObserver(this);
 474
 475   // Destroy the BrowserCommandController before removing the browser, so that
 476   // it doesn't act on any notifications that are sent as a result of removing
 477   // the browser.
 478   command_controller_.reset();
 479   BrowserList::RemoveBrowser(this);
 480
 481   SessionService* session_service =
 482       SessionServiceFactory::GetForProfile(profile_);
 483   if (session_service)
 484     session_service->WindowClosed(session_id_);
 485
 486   TabRestoreService* tab_restore_service =
 487       TabRestoreServiceFactory::GetForProfile(profile());
 488   if (tab_restore_service)
 489     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 490
 491 #if !defined(OS_MACOSX)
 492   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 493     // We're the last browser window with this profile. We need to nuke the
 494     // TabRestoreService, which will start the shutdown of the
 495     // NavigationControllers and allow for proper shutdown. If we don't do this
 496     // chrome won't shutdown cleanly, and may end up crashing when some
 497     // thread tries to use the IO thread (or another thread) that is no longer
 498     // valid.
 499     // This isn't a valid assumption for Mac OS, as it stays running after
 500     // the last browser has closed. The Mac equivalent is in its app
 501     // controller.
 502     TabRestoreServiceFactory::ResetForProfile(profile_);
 503   }
 504 #endif
 505
 506   profile_pref_registrar_.RemoveAll();
 507
 508   encoding_auto_detect_.Destroy();
 509
 510   // Destroy BrowserExtensionWindowController before the incognito profile
 511   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 512   extension_window_controller_.reset();
 513
 514   // Destroy BrowserInstantController before the incongnito profile is destroyed
 515   // because the InstantController destructor depends on this profile.
 516   instant_controller_.reset();
 517
 518   if (profile_->IsOffTheRecord() &&
 519       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 520     if (profile_->IsGuestSession()) {
 521 // ChromeOS handles guest data independently.
 522 #if !defined(OS_CHROMEOS)
 523       // Clear all browsing data once a Guest Session completes. The Guest
 524       // profile has BrowserContextKeyedServices that the Incognito profile
 525       // doesn't, so the ProfileDestroyer can't delete it properly.
 526       // TODO(mlerman): Delete the guest using an improved ProfileDestroyer.
 527       BrowsingDataRemover* data_remover =
 528           BrowsingDataRemover::CreateForUnboundedRange(profile_);
 529       data_remover->Remove(BrowsingDataRemover::REMOVE_ALL,
 530                            BrowsingDataHelper::ALL);
 531       // BrowsingDataRemover deletes itself.
 532 #endif
 533     } else {
 534       // An incognito profile is no longer needed, this indirectly frees
 535       // its cache and cookies once it gets destroyed at the appropriate time.
 536       ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 537     }
 538   }
 539
 540   // There may be pending file dialogs, we need to tell them that we've gone
 541   // away so they don't try and call back to us.
 542   if (select_file_dialog_.get())
 543     select_file_dialog_->ListenerDestroyed();
 544
 545   int num_downloads;
 546   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 547           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 548       !browser_defaults::kBrowserAliveWithNoWindows) {
 549     DownloadService::CancelAllDownloads();
 550   }
 551 }
 552
 553 ///////////////////////////////////////////////////////////////////////////////
 554 // Getters & Setters
 555
 556 FindBarController* Browser::GetFindBarController() {
 557   if (!find_bar_controller_.get()) {
 558     FindBar* find_bar = window_->CreateFindBar();
 559     find_bar_controller_.reset(new FindBarController(find_bar));
 560     find_bar->SetFindBarController(find_bar_controller_.get());
 561     find_bar_controller_->ChangeWebContents(
 562         tab_strip_model_->GetActiveWebContents());
 563     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
 564   }
 565   return find_bar_controller_.get();
 566 }
 567
 568 bool Browser::HasFindBarController() const {
 569   return find_bar_controller_.get() != NULL;
 570 }
 571
 572 bool Browser::is_app() const {
 573   return !app_name_.empty();
 574 }
 575
 576 bool Browser::is_devtools() const {
 577   return app_name_ == DevToolsWindow::kDevToolsApp;
 578 }
 579
 580 ///////////////////////////////////////////////////////////////////////////////
 581 // Browser, State Storage and Retrieval for UI:
 582
 583 gfx::Image Browser::GetCurrentPageIcon() const {
 584   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 585   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 586   // window during the window's creation (before tabs have been added).
 587   FaviconTabHelper* favicon_tab_helper =
 588       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 589   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 590 }
 591
 592 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 593   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 594   base::string16 title;
 595
 596   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 597   // window during the window's creation (before tabs have been added).
 598   if (contents) {
 599     // The web app frame uses the host instead of the title.
 600     if (ShouldUseWebAppFrame())
 601       return base::UTF8ToUTF16(contents->GetURL().host());
 602
 603     title = contents->GetTitle();
 604     FormatTitleForDisplay(&title);
 605   }
 606   if (title.empty())
 607     title = CoreTabHelper::GetDefaultTitle();
 608
 609 #if defined(OS_MACOSX)
 610   // On Mac, we don't want to suffix the page title with
 611   // the application name.
 612   return title;
 613 #elif defined(USE_ASH)
 614   // On Ash, we don't want to suffix the page title with the application name,
 615   // but on Windows, where USE_ASH can also be true, we still want the prefix
 616   // on desktop.
 617   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 618     return title;
 619 #endif
 620   // Don't append the app name to window titles on app frames and app popups
 621   return is_app() ?
 622       title :
 623       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 624 }
 625
 626 // static
 627 void Browser::FormatTitleForDisplay(base::string16* title) {
 628   size_t current_index = 0;
 629   size_t match_index;
 630   while ((match_index = title->find(L'\n', current_index)) !=
 631          base::string16::npos) {
 632     title->replace(match_index, 1, base::string16());
 633     current_index = match_index;
 634   }
 635 }
 636
 637 ///////////////////////////////////////////////////////////////////////////////
 638 // Browser, OnBeforeUnload handling:
 639
 640 bool Browser::ShouldCloseWindow() {
 641   if (!CanCloseWithInProgressDownloads())
 642     return false;
 643
 644   if (IsFastTabUnloadEnabled())
 645     return fast_unload_controller_->ShouldCloseWindow();
 646   return unload_controller_->ShouldCloseWindow();
 647 }
 648
 649 bool Browser::CallBeforeUnloadHandlers(
 650     const base::Callback<void(bool)>& on_close_confirmed) {
 651   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 652   if (IsFastTabUnloadEnabled()) {
 653     return fast_unload_controller_->CallBeforeUnloadHandlers(
 654         on_close_confirmed);
 655   }
 656   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 657 }
 658
 659 void Browser::ResetBeforeUnloadHandlers() {
 660   cancel_download_confirmation_state_ = NOT_PROMPTED;
 661   if (IsFastTabUnloadEnabled())
 662     fast_unload_controller_->ResetBeforeUnloadHandlers();
 663   else
 664     unload_controller_->ResetBeforeUnloadHandlers();
 665 }
 666
 667 bool Browser::HasCompletedUnloadProcessing() const {
 668   DCHECK(IsFastTabUnloadEnabled());
 669   return fast_unload_controller_->HasCompletedUnloadProcessing();
 670 }
 671
 672 bool Browser::IsAttemptingToCloseBrowser() const {
 673   if (IsFastTabUnloadEnabled())
 674     return fast_unload_controller_->is_attempting_to_close_browser();
 675   return unload_controller_->is_attempting_to_close_browser();
 676 }
 677
 678 void Browser::OnWindowClosing() {
 679   if (!ShouldCloseWindow())
 680     return;
 681
 682   // Application should shutdown on last window close if the user is explicitly
 683   // trying to quit, or if there is nothing keeping the browser alive (such as
 684   // AppController on the Mac, or BackgroundContentsService for background
 685   // pages).
 686   bool should_quit_if_last_browser =
 687       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 688
 689   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this)) {
 690 #if defined(OS_WIN)
 691     browser_watcher::ExitFunnel::RecordSingleEvent(
 692           chrome::kBrowserExitCodesRegistryPath, L"LastWindowClose");
 693 #endif
 694     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 695   }
 696
 697   // Don't use GetForProfileIfExisting here, we want to force creation of the
 698   // session service so that user can restore what was open.
 699   SessionService* session_service =
 700       SessionServiceFactory::GetForProfile(profile());
 701   if (session_service)
 702     session_service->WindowClosing(session_id());
 703
 704   TabRestoreService* tab_restore_service =
 705       TabRestoreServiceFactory::GetForProfile(profile());
 706
 707 #if defined(USE_AURA)
 708   if (tab_restore_service && is_app() && !is_devtools())
 709     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 710 #endif
 711
 712   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 713     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 714
 715   // TODO(sky): convert session/tab restore to use notification.
 716   content::NotificationService::current()->Notify(
 717       chrome::NOTIFICATION_BROWSER_CLOSING,
 718       content::Source<Browser>(this),
 719       content::NotificationService::NoDetails());
 720
 721   if (!IsFastTabUnloadEnabled())
 722     tab_strip_model_->CloseAllTabs();
 723 }
 724
 725 ////////////////////////////////////////////////////////////////////////////////
 726 // In-progress download termination handling:
 727
 728 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 729   if (cancel_downloads) {
 730     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 731     chrome::CloseWindow(this);
 732     return;
 733   }
 734
 735   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 736   // close again we'll show the warning again.
 737   cancel_download_confirmation_state_ = NOT_PROMPTED;
 738
 739   // Show the download page so the user can figure-out what downloads are still
 740   // in-progress.
 741   chrome::ShowDownloads(this);
 742
 743   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 744   // prompt every time any tab is closed. http://crbug.com/305516
 745   if (IsFastTabUnloadEnabled())
 746     fast_unload_controller_->CancelWindowClose();
 747   else
 748     unload_controller_->CancelWindowClose();
 749 }
 750
 751 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 752     int* num_downloads_blocking) const {
 753   DCHECK(num_downloads_blocking);
 754   *num_downloads_blocking = 0;
 755
 756   // If we're not running a full browser process with a profile manager
 757   // (testing), it's ok to close the browser.
 758   if (!g_browser_process->profile_manager())
 759     return DOWNLOAD_CLOSE_OK;
 760
 761   int total_download_count =
 762       DownloadService::NonMaliciousDownloadCountAllProfiles();
 763   if (total_download_count == 0)
 764     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 765
 766   // Figure out how many windows are open total, and associated with this
 767   // profile, that are relevant for the ok-to-close decision.
 768   int profile_window_count = 0;
 769   int total_window_count = 0;
 770   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 771     // Don't count this browser window or any other in the process of closing.
 772     Browser* const browser = *it;
 773     // Window closing may be delayed, and windows that are in the process of
 774     // closing don't count against our totals.
 775     if (browser == this || browser->IsAttemptingToCloseBrowser())
 776       continue;
 777
 778     if (it->profile() == profile())
 779       profile_window_count++;
 780     total_window_count++;
 781   }
 782
 783   // If there aren't any other windows, we're at browser shutdown,
 784   // which would cancel all current downloads.
 785   if (total_window_count == 0) {
 786     *num_downloads_blocking = total_download_count;
 787     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 788   }
 789
 790   // If there aren't any other windows on our profile, and we're an incognito
 791   // profile, and there are downloads associated with that profile,
 792   // those downloads would be cancelled by our window (-> profile) close.
 793   DownloadService* download_service =
 794       DownloadServiceFactory::GetForBrowserContext(profile());
 795   if ((profile_window_count == 0) &&
 796       (download_service->NonMaliciousDownloadCount() > 0) &&
 797       profile()->IsOffTheRecord()) {
 798     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 799     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 800   }
 801
 802   // Those are the only conditions under which we will block shutdown.
 803   return DOWNLOAD_CLOSE_OK;
 804 }
 805
 806 ////////////////////////////////////////////////////////////////////////////////
 807 // Browser, Tab adding/showing functions:
 808
 809 void Browser::WindowFullscreenStateChanged() {
 810   exclusive_access_manager_->fullscreen_controller()
 811       ->WindowFullscreenStateChanged();
 812   command_controller_->FullscreenStateChanged();
 813   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 814 }
 815
 816 ///////////////////////////////////////////////////////////////////////////////
 817 // Browser, Assorted browser commands:
 818
 819 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 820   exclusive_access_manager_->fullscreen_controller()
 821       ->ToggleBrowserFullscreenModeWithExtension(extension_url);
 822 }
 823
 824 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 825   return SupportsWindowFeatureImpl(feature, true);
 826 }
 827
 828 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 829   return SupportsWindowFeatureImpl(feature, false);
 830 }
 831
 832 void Browser::ToggleEncodingAutoDetect() {
 833   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 834   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 835   // If "auto detect" is turned on, then any current override encoding
 836   // is cleared. This also implicitly performs a reload.
 837   // OTOH, if "auto detect" is turned off, we don't change the currently
 838   // active encoding.
 839   if (encoding_auto_detect_.GetValue()) {
 840     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 841     if (contents)
 842       contents->ResetOverrideEncoding();
 843   }
 844 }
 845
 846 void Browser::OverrideEncoding(int encoding_id) {
 847   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 848   const std::string selected_encoding =
 849       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 850   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 851   if (!selected_encoding.empty() && contents)
 852      contents->SetOverrideEncoding(selected_encoding);
 853   // Update the list of recently selected encodings.
 854   std::string new_selected_encoding_list;
 855   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 856         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 857         encoding_id,
 858         &new_selected_encoding_list)) {
 859     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 860                                     new_selected_encoding_list);
 861   }
 862 }
 863
 864 void Browser::OpenFile() {
 865   content::RecordAction(UserMetricsAction("OpenFile"));
 866   select_file_dialog_ = ui::SelectFileDialog::Create(
 867       this, new ChromeSelectFilePolicy(
 868           tab_strip_model_->GetActiveWebContents()));
 869
 870   const base::FilePath directory = profile_->last_selected_directory();
 871
 872   // TODO(beng): figure out how to juggle this.
 873   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 874   ui::SelectFileDialog::FileTypeInfo file_types;
 875   file_types.support_drive = true;
 876   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 877                                   base::string16(),
 878                                   directory,
 879                                   &file_types,
 880                                   0,
 881                                   base::FilePath::StringType(),
 882                                   parent_window,
 883                                   NULL);
 884 }
 885
 886 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 887   if (GetStatusBubble())
 888     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 889 }
 890
 891 ///////////////////////////////////////////////////////////////////////////////
 892
 893 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 894                                          ui::PageTransition transition,
 895                                          bool user_initiated) {
 896   tab_strip_model_->TabNavigating(contents, transition);
 897
 898   bool contents_is_selected =
 899       contents == tab_strip_model_->GetActiveWebContents();
 900   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 901     // Forcibly reset the location bar if the url is going to change in the
 902     // current tab, since otherwise it won't discard any ongoing user edits,
 903     // since it doesn't realize this is a user-initiated action.
 904     window()->GetLocationBar()->Revert();
 905   }
 906
 907   if (GetStatusBubble())
 908     GetStatusBubble()->Hide();
 909
 910   // Update the location bar. This is synchronous. We specifically don't
 911   // update the load state since the load hasn't started yet and updating it
 912   // will put it out of sync with the actual state like whether we're
 913   // displaying a favicon, which controls the throbber. If we updated it here,
 914   // the throbber will show the default favicon for a split second when
 915   // navigating away from the new tab page.
 916   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 917
 918   if (contents_is_selected)
 919     contents->SetInitialFocus();
 920 }
 921
 922 ///////////////////////////////////////////////////////////////////////////////
 923 // Browser, PageNavigator implementation:
 924
 925 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 926   return OpenURLFromTab(NULL, params);
 927 }
 928
 929 ///////////////////////////////////////////////////////////////////////////////
 930 // Browser, TabStripModelObserver implementation:
 931
 932 void Browser::TabInsertedAt(WebContents* contents,
 933                             int index,
 934                             bool foreground) {
 935   SetAsDelegate(contents, true);
 936
 937   if (popup_manager_)
 938     popup_manager_->RegisterWith(contents);
 939
 940   SessionTabHelper* session_tab_helper =
 941       SessionTabHelper::FromWebContents(contents);
 942   session_tab_helper->SetWindowID(session_id());
 943
 944   content::NotificationService::current()->Notify(
 945       chrome::NOTIFICATION_TAB_PARENTED,
 946       content::Source<content::WebContents>(contents),
 947       content::NotificationService::NoDetails());
 948
 949   SyncHistoryWithTabs(index);
 950
 951   // Make sure the loading state is updated correctly, otherwise the throbber
 952   // won't start if the page is loading.
 953   LoadingStateChanged(contents, true);
 954
 955   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 956
 957   SessionService* session_service =
 958       SessionServiceFactory::GetForProfile(profile_);
 959   if (session_service) {
 960     session_service->TabInserted(contents);
 961     int new_active_index = tab_strip_model_->active_index();
 962     if (index < new_active_index)
 963       session_service->SetSelectedTabInWindow(session_id(),
 964                                               new_active_index);
 965   }
 966 }
 967
 968 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 969                            WebContents* contents,
 970                            int index) {
 971   exclusive_access_manager_->OnTabClosing(contents);
 972   SessionService* session_service =
 973       SessionServiceFactory::GetForProfile(profile_);
 974   if (session_service)
 975     session_service->TabClosing(contents);
 976   content::NotificationService::current()->Notify(
 977       chrome::NOTIFICATION_TAB_CLOSING,
 978       content::Source<NavigationController>(&contents->GetController()),
 979       content::NotificationService::NoDetails());
 980
 981   if (popup_manager_)
 982     popup_manager_->UnregisterWith(contents);
 983
 984   // Sever the WebContents' connection back to us.
 985   SetAsDelegate(contents, false);
 986 }
 987
 988 void Browser::TabDetachedAt(WebContents* contents, int index) {
 989   // TabDetachedAt is called before TabStripModel has updated the
 990   // active index.
 991   int old_active_index = tab_strip_model_->active_index();
 992   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 993     SessionService* session_service =
 994         SessionServiceFactory::GetForProfileIfExisting(profile_);
 995     if (session_service)
 996       session_service->SetSelectedTabInWindow(session_id(),
 997                                               old_active_index - 1);
 998   }
 999
1000   if (popup_manager_)
1001     popup_manager_->UnregisterWith(contents);
1002
1003   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
1004 }
1005
1006 void Browser::TabDeactivated(WebContents* contents) {
1007   exclusive_access_manager_->OnTabDeactivated(contents);
1008   search_delegate_->OnTabDeactivated(contents);
1009   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
1010
1011   // Save what the user's currently typing, so it can be restored when we
1012   // switch back to this tab.
1013   window_->GetLocationBar()->SaveStateToContents(contents);
1014
1015   if (instant_controller_)
1016     instant_controller_->TabDeactivated(contents);
1017 }
1018
1019 void Browser::ActiveTabChanged(WebContents* old_contents,
1020                                WebContents* new_contents,
1021                                int index,
1022                                int reason) {
1023   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
1024
1025   // Update the bookmark state, since the BrowserWindow may query it during
1026   // OnActiveTabChanged() below.
1027   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1028
1029   // Let the BrowserWindow do its handling.  On e.g. views this changes the
1030   // focused object, which should happen before we update the toolbar below,
1031   // since the omnibox expects the correct element to already be focused when it
1032   // is updated.
1033   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1034
1035   exclusive_access_manager_->OnTabDetachedFromView(old_contents);
1036
1037   // Discarded tabs always get reloaded.
1038   if (tab_strip_model_->IsTabDiscarded(index)) {
1039     LOG(WARNING) << "Reloading discarded tab at " << index;
1040     static int reload_count = 0;
1041     UMA_HISTOGRAM_CUSTOM_COUNTS(
1042         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1043     chrome::Reload(this, CURRENT_TAB);
1044   }
1045
1046   // If we have any update pending, do it now.
1047   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1048     ProcessPendingUIUpdates();
1049
1050   // Propagate the profile to the location bar.
1051   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1052
1053   if (chrome::IsInstantExtendedAPIEnabled())
1054     search_delegate_->OnTabActivated(new_contents);
1055
1056   // Update reload/stop state.
1057   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1058
1059   // Update commands to reflect current state.
1060   command_controller_->TabStateChanged();
1061
1062   // Reset the status bubble.
1063   StatusBubble* status_bubble = GetStatusBubble();
1064   if (status_bubble) {
1065     status_bubble->Hide();
1066
1067     // Show the loading state (if any).
1068     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1069         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1070   }
1071
1072   if (HasFindBarController()) {
1073     find_bar_controller_->ChangeWebContents(new_contents);
1074     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
1075   }
1076
1077   // Update sessions. Don't force creation of sessions. If sessions doesn't
1078   // exist, the change will be picked up by sessions when created.
1079   SessionService* session_service =
1080       SessionServiceFactory::GetForProfileIfExisting(profile_);
1081   if (session_service && !tab_strip_model_->closing_all()) {
1082     session_service->SetSelectedTabInWindow(session_id(),
1083                                             tab_strip_model_->active_index());
1084   }
1085
1086   // This needs to be called after notifying SearchDelegate.
1087   if (instant_controller_)
1088     instant_controller_->ActiveTabChanged();
1089
1090   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1091   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1092 }
1093
1094 void Browser::TabMoved(WebContents* contents,
1095                        int from_index,
1096                        int to_index) {
1097   DCHECK(from_index >= 0 && to_index >= 0);
1098   // Notify the history service.
1099   SyncHistoryWithTabs(std::min(from_index, to_index));
1100 }
1101
1102 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1103                             WebContents* old_contents,
1104                             WebContents* new_contents,
1105                             int index) {
1106   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1107   exclusive_access_manager_->OnTabClosing(old_contents);
1108   SessionService* session_service =
1109       SessionServiceFactory::GetForProfile(profile_);
1110   if (session_service)
1111     session_service->TabClosing(old_contents);
1112   TabInsertedAt(new_contents,
1113                 index,
1114                 (index == tab_strip_model_->active_index()));
1115
1116   int entry_count = new_contents->GetController().GetEntryCount();
1117   if (entry_count > 0) {
1118     // Send out notification so that observers are updated appropriately.
1119     new_contents->GetController().NotifyEntryChanged(
1120         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1121         entry_count - 1);
1122   }
1123
1124   if (session_service) {
1125     // The new_contents may end up with a different navigation stack. Force
1126     // the session service to update itself.
1127     session_service->TabRestored(new_contents,
1128                                  tab_strip_model_->IsTabPinned(index));
1129   }
1130 }
1131
1132 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1133   SessionService* session_service =
1134       SessionServiceFactory::GetForProfileIfExisting(profile());
1135   if (session_service) {
1136     SessionTabHelper* session_tab_helper =
1137         SessionTabHelper::FromWebContents(contents);
1138     session_service->SetPinnedState(session_id(),
1139                                     session_tab_helper->session_id(),
1140                                     tab_strip_model_->IsTabPinned(index));
1141   }
1142 }
1143
1144 void Browser::TabStripEmpty() {
1145   // Close the frame after we return to the message loop (not immediately,
1146   // otherwise it will destroy this object before the stack has a chance to
1147   // cleanly unwind.)
1148   // Note: This will be called several times if TabStripEmpty is called several
1149   //       times. This is because it does not close the window if tabs are
1150   //       still present.
1151   base::MessageLoop::current()->PostTask(
1152       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1153
1154   // Instant may have visible WebContents that need to be detached before the
1155   // window system closes.
1156   instant_controller_.reset();
1157 }
1158
1159 bool Browser::CanOverscrollContent() const {
1160 #if defined(OS_WIN)
1161   // Don't enable overscroll on Windows machines unless they have a touch
1162   // screen as these machines typically don't have a touchpad capable of
1163   // horizontal scrolling. We are purposefully biased towards "no" here,
1164   // so that we don't waste resources capturing screenshots for horizontal
1165   // overscroll navigation unnecessarily.
1166   bool allow_overscroll = ui::IsTouchDevicePresent();
1167 #elif defined(USE_AURA)
1168   bool allow_overscroll = true;
1169 #else
1170   bool allow_overscroll = false;
1171 #endif
1172
1173   if (!allow_overscroll)
1174     return false;
1175
1176   const std::string value =
1177       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
1178           switches::kOverscrollHistoryNavigation);
1179   bool overscroll_enabled = value != "0";
1180   if (!overscroll_enabled)
1181     return false;
1182   if (is_app() || is_devtools() || !is_type_tabbed())
1183     return false;
1184
1185   // The detached bookmark bar has appearance of floating above the
1186   // web-contents. This does not play nicely with overscroll navigation
1187   // gestures. So disable overscroll navigation when the bookmark bar is in the
1188   // detached state and the overscroll effect moves the layers.
1189   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1190     return false;
1191   return true;
1192 }
1193
1194 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1195   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1196   // other pages have committed.
1197   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1198   if (!profile || !source->GetController().GetLastCommittedEntry())
1199     return false;
1200   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1201   return chrome::IsNTPURL(committed_url, profile);
1202 }
1203
1204 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1205                                      const NativeWebKeyboardEvent& event,
1206                                      bool* is_keyboard_shortcut) {
1207   // Escape exits tabbed fullscreen mode and mouse lock, and possibly others.
1208   // TODO(koz): Write a test for this http://crbug.com/100441.
1209   if (event.windowsKeyCode == 27 &&
1210       exclusive_access_manager_->HandleUserPressedEscape()) {
1211     return true;
1212   }
1213   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1214 }
1215
1216 void Browser::HandleKeyboardEvent(content::WebContents* source,
1217                                   const NativeWebKeyboardEvent& event) {
1218   DevToolsWindow* devtools_window =
1219       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1220   bool handled = false;
1221   if (devtools_window)
1222     handled = devtools_window->ForwardKeyboardEvent(event);
1223
1224   if (!handled)
1225     window()->HandleKeyboardEvent(event);
1226 }
1227
1228 bool Browser::TabsNeedBeforeUnloadFired() {
1229   if (IsFastTabUnloadEnabled())
1230     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1231   return unload_controller_->TabsNeedBeforeUnloadFired();
1232 }
1233
1234 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1235                                     const gfx::Rect& anchor_in_root_view,
1236                                     const base::string16& main_text,
1237                                     const base::string16& sub_text) {
1238   validation_message_bubble_ =
1239       TabDialogs::FromWebContents(web_contents)
1240           ->ShowValidationMessage(anchor_in_root_view, main_text, sub_text);
1241 }
1242
1243 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1244   validation_message_bubble_.reset();
1245 }
1246
1247 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1248                                     const gfx::Rect& anchor_in_root_view) {
1249   if (!validation_message_bubble_)
1250     return;
1251   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1252   if (rwhv) {
1253     validation_message_bubble_->SetPositionRelativeToAnchor(
1254         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1255   }
1256 }
1257
1258 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1259                                     const blink::WebGestureEvent& event) {
1260   // Disable pinch zooming in undocked dev tools window due to poor UX.
1261   if (app_name() == DevToolsWindow::kDevToolsApp)
1262     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1263            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1264            event.type == blink::WebGestureEvent::GesturePinchEnd;
1265
1266   return false;
1267 }
1268
1269 bool Browser::CanDragEnter(content::WebContents* source,
1270                            const content::DropData& data,
1271                            blink::WebDragOperationsMask operations_allowed) {
1272   // Disallow drag-and-drop navigation for Settings windows which do not support
1273   // external navigation.
1274   if ((operations_allowed & blink::WebDragOperationLink) &&
1275       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1276     return false;
1277   }
1278   return true;
1279 }
1280
1281 bool Browser::IsMouseLocked() const {
1282   return exclusive_access_manager_->mouse_lock_controller()->IsMouseLocked();
1283 }
1284
1285 void Browser::OnWindowDidShow() {
1286   if (window_has_shown_)
1287     return;
1288   window_has_shown_ = true;
1289
1290 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1291 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1292   // Measure the latency from startup till the first browser window becomes
1293   // visible.
1294   static bool is_first_browser_window = true;
1295   if (is_first_browser_window &&
1296       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1297     is_first_browser_window = false;
1298     const base::Time process_creation_time =
1299         base::CurrentProcessInfo::CreationTime();
1300
1301     if (!process_creation_time.is_null()) {
1302       UMA_HISTOGRAM_LONG_TIMES(
1303           "Startup.BrowserWindowDisplay",
1304           base::Time::Now() - process_creation_time);
1305     }
1306   }
1307 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1308
1309   // Nothing to do for non-tabbed windows.
1310   if (!is_type_tabbed())
1311     return;
1312
1313   // Show any pending global error bubble.
1314   GlobalErrorService* service =
1315       GlobalErrorServiceFactory::GetForProfile(profile());
1316   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1317   if (error)
1318     error->ShowBubbleView(this);
1319 }
1320
1321 void Browser::ShowFirstRunBubble() {
1322   window()->GetLocationBar()->ShowFirstRunBubble();
1323 }
1324
1325 void Browser::ShowDownload(content::DownloadItem* download) {
1326   if (!window())
1327     return;
1328
1329   // If the download occurs in a new tab, and it's not a save page
1330   // download (started before initial navigation completed) close it.
1331   // Avoid calling CloseContents if the tab is not in this browser's tab strip
1332   // model; this can happen if the download was initiated by something internal
1333   // to Chrome, such as by the app list.
1334   WebContents* source = download->GetWebContents();
1335   if (source && source->GetController().IsInitialNavigation() &&
1336       tab_strip_model_->count() > 1 &&
1337       tab_strip_model_->GetIndexOfWebContents(source) !=
1338           TabStripModel::kNoTab &&
1339       !download->IsSavePackageDownload()) {
1340     CloseContents(source);
1341   }
1342
1343   // Some (app downloads) are not supposed to appear on the shelf.
1344   if (!DownloadItemModel(download).ShouldShowInShelf())
1345     return;
1346
1347   // GetDownloadShelf creates the download shelf if it was not yet created.
1348   window()->GetDownloadShelf()->AddDownload(download);
1349 }
1350
1351 ///////////////////////////////////////////////////////////////////////////////
1352 // Browser, content::WebContentsDelegate implementation:
1353
1354 WebContents* Browser::OpenURLFromTab(WebContents* source,
1355                                      const OpenURLParams& params) {
1356   if (is_devtools()) {
1357     DevToolsWindow* window = DevToolsWindow::AsDevToolsWindow(source);
1358     DCHECK(window);
1359     return window->OpenURLFromTab(source, params);
1360   }
1361
1362   chrome::NavigateParams nav_params(this, params.url, params.transition);
1363   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1364   nav_params.source_contents = source;
1365   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1366   if (params.user_gesture)
1367     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1368   nav_params.user_gesture = params.user_gesture;
1369
1370   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1371   if (source)
1372     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1373
1374   if (popup_blocker_helper) {
1375     if ((params.disposition == NEW_POPUP ||
1376          params.disposition == NEW_FOREGROUND_TAB ||
1377          params.disposition == NEW_BACKGROUND_TAB ||
1378          params.disposition == NEW_WINDOW) &&
1379         !params.user_gesture &&
1380         !base::CommandLine::ForCurrentProcess()->HasSwitch(
1381             switches::kDisablePopupBlocking)) {
1382       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1383                                                 WebWindowFeatures())) {
1384         return NULL;
1385       }
1386     }
1387   }
1388
1389   chrome::Navigate(&nav_params);
1390
1391   return nav_params.target_contents;
1392 }
1393
1394 void Browser::NavigationStateChanged(WebContents* source,
1395                                      content::InvalidateTypes changed_flags) {
1396   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1397   // is fixed.
1398   tracked_objects::ScopedTracker tracking_profile1(
1399       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1400           "466285 Browser::NavigationStateChanged::ScheduleUIUpdate"));
1401   // Only update the UI when something visible has changed.
1402   if (changed_flags)
1403     ScheduleUIUpdate(source, changed_flags);
1404
1405   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
1406   // is fixed.
1407   tracked_objects::ScopedTracker tracking_profile2(
1408       FROM_HERE_WITH_EXPLICIT_FUNCTION(
1409           "466285 Browser::NavigationStateChanged::TabStateChanged"));
1410   // We can synchronously update commands since they will only change once per
1411   // navigation, so we don't have to worry about flickering. We do, however,
1412   // need to update the command state early on load to always present usable
1413   // actions in the face of slow-to-commit pages.
1414   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1415                        content::INVALIDATE_TYPE_LOAD))
1416     command_controller_->TabStateChanged();
1417
1418   if (bookmark_app_controller_)
1419     bookmark_app_controller_->UpdateLocationBarVisibility(true);
1420 }
1421
1422 void Browser::VisibleSSLStateChanged(const WebContents* source) {
1423   // When the current tab's SSL state changes, we need to update the URL
1424   // bar to reflect the new state.
1425   DCHECK(source);
1426   if (tab_strip_model_->GetActiveWebContents() == source)
1427     UpdateToolbar(false);
1428 }
1429
1430 void Browser::AddNewContents(WebContents* source,
1431                              WebContents* new_contents,
1432                              WindowOpenDisposition disposition,
1433                              const gfx::Rect& initial_rect,
1434                              bool user_gesture,
1435                              bool* was_blocked) {
1436   chrome::AddWebContents(this, source, new_contents, disposition, initial_rect,
1437                          user_gesture, was_blocked);
1438 }
1439
1440 void Browser::ActivateContents(WebContents* contents) {
1441   tab_strip_model_->ActivateTabAt(
1442       tab_strip_model_->GetIndexOfWebContents(contents), false);
1443   window_->Activate();
1444 }
1445
1446 void Browser::DeactivateContents(WebContents* contents) {
1447   window_->Deactivate();
1448 }
1449
1450 void Browser::LoadingStateChanged(WebContents* source,
1451     bool to_different_document) {
1452   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1453   window_->UpdateTitleBar();
1454
1455   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1456   if (source == selected_contents) {
1457     bool is_loading = source->IsLoading() && to_different_document;
1458     command_controller_->LoadingStateChanged(is_loading, false);
1459     if (GetStatusBubble()) {
1460       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1461           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1462     }
1463   }
1464 }
1465
1466 void Browser::CloseContents(WebContents* source) {
1467   bool can_close_contents;
1468   if (IsFastTabUnloadEnabled())
1469     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1470   else
1471     can_close_contents = unload_controller_->CanCloseContents(source);
1472
1473   if (can_close_contents)
1474     chrome::CloseWebContents(this, source, true);
1475 }
1476
1477 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1478   if (!IsPopupOrPanel(source)) {
1479     NOTREACHED() << "moving invalid browser type";
1480     return;
1481   }
1482   window_->SetBounds(pos);
1483 }
1484
1485 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1486   return is_type_popup();
1487 }
1488
1489 void Browser::UpdateTargetURL(WebContents* source, const GURL& url) {
1490   if (!GetStatusBubble())
1491     return;
1492
1493   if (source == tab_strip_model_->GetActiveWebContents()) {
1494     PrefService* prefs = profile_->GetPrefs();
1495     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1496   }
1497 }
1498
1499 void Browser::ContentsMouseEvent(
1500     WebContents* source, const gfx::Point& location, bool motion) {
1501   if (!GetStatusBubble())
1502     return;
1503
1504   if (source == tab_strip_model_->GetActiveWebContents()) {
1505     GetStatusBubble()->MouseMoved(location, !motion);
1506     if (!motion)
1507       GetStatusBubble()->SetURL(GURL(), std::string());
1508   }
1509 }
1510
1511 void Browser::ContentsZoomChange(bool zoom_in) {
1512   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1513 }
1514
1515 void Browser::WebContentsFocused(WebContents* contents) {
1516   window_->WebContentsFocused(contents);
1517 }
1518
1519 bool Browser::TakeFocus(content::WebContents* source,
1520                         bool reverse) {
1521   content::NotificationService::current()->Notify(
1522       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1523       content::Source<Browser>(this),
1524       content::NotificationService::NoDetails());
1525   return false;
1526 }
1527
1528 gfx::Rect Browser::GetRootWindowResizerRect() const {
1529   return window_->GetRootWindowResizerRect();
1530 }
1531
1532 void Browser::BeforeUnloadFired(WebContents* web_contents,
1533                                 bool proceed,
1534                                 bool* proceed_to_fire_unload) {
1535   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1536         proceed, proceed_to_fire_unload))
1537     return;
1538
1539   if (IsFastTabUnloadEnabled()) {
1540     *proceed_to_fire_unload =
1541         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1542   } else {
1543     *proceed_to_fire_unload =
1544         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1545   }
1546 }
1547
1548 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1549   const content::NavigationEntry* entry =
1550       source->GetController().GetActiveEntry();
1551   if (entry) {
1552     GURL url = entry->GetURL();
1553     GURL virtual_url = entry->GetVirtualURL();
1554     if ((url.SchemeIs(content::kChromeUIScheme) &&
1555         url.host() == chrome::kChromeUINewTabHost) ||
1556         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1557         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1558       return true;
1559     }
1560   }
1561
1562   return chrome::NavEntryIsInstantNTP(source, entry);
1563 }
1564
1565 void Browser::SetFocusToLocationBar(bool select_all) {
1566   // Two differences between this and FocusLocationBar():
1567   // (1) This doesn't get recorded in user metrics, since it's called
1568   //     internally.
1569   // (2) This checks whether the location bar can be focused, and if not, clears
1570   //     the focus.  FocusLocationBar() is only reached when the location bar is
1571   //     focusable, but this may be reached at other times, e.g. while in
1572   //     fullscreen mode, where we need to leave focus in a consistent state.
1573   window_->SetFocusToLocationBar(select_all);
1574 }
1575
1576 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1577   DCHECK(source);
1578   chrome::ViewSource(this, source);
1579 }
1580
1581 void Browser::ViewSourceForFrame(WebContents* source,
1582                                  const GURL& frame_url,
1583                                  const content::PageState& frame_page_state) {
1584   DCHECK(source);
1585   chrome::ViewSource(this, source, frame_url, frame_page_state);
1586 }
1587
1588 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1589   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1590                                 source);
1591 }
1592
1593 bool Browser::ShouldCreateWebContents(
1594     WebContents* web_contents,
1595     int route_id,
1596     int main_frame_route_id,
1597     WindowContainerType window_container_type,
1598     const base::string16& frame_name,
1599     const GURL& target_url,
1600     const std::string& partition_id,
1601     content::SessionStorageNamespace* session_storage_namespace) {
1602   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1603     // If a BackgroundContents is created, suppress the normal WebContents.
1604     return !MaybeCreateBackgroundContents(route_id,
1605                                           main_frame_route_id,
1606                                           web_contents,
1607                                           frame_name,
1608                                           target_url,
1609                                           partition_id,
1610                                           session_storage_namespace);
1611   }
1612
1613   return true;
1614 }
1615
1616 void Browser::WebContentsCreated(WebContents* source_contents,
1617                                  int opener_render_frame_id,
1618                                  const base::string16& frame_name,
1619                                  const GURL& target_url,
1620                                  WebContents* new_contents) {
1621   // Adopt the WebContents now, so all observers are in place, as the network
1622   // requests for its initial navigation will start immediately. The WebContents
1623   // will later be inserted into this browser using Browser::Navigate via
1624   // AddNewContents.
1625   TabHelpers::AttachTabHelpers(new_contents);
1626
1627   // Notify.
1628   RetargetingDetails details;
1629   details.source_web_contents = source_contents;
1630   details.source_render_frame_id = opener_render_frame_id;
1631   details.target_url = target_url;
1632   details.target_web_contents = new_contents;
1633   details.not_yet_in_tabstrip = true;
1634   content::NotificationService::current()->Notify(
1635       chrome::NOTIFICATION_RETARGETING,
1636       content::Source<Profile>(profile_),
1637       content::Details<RetargetingDetails>(&details));
1638 }
1639
1640 void Browser::RendererUnresponsive(WebContents* source) {
1641   // Ignore hangs if a tab is blocked.
1642   int index = tab_strip_model_->GetIndexOfWebContents(source);
1643   DCHECK_NE(TabStripModel::kNoTab, index);
1644   if (tab_strip_model_->IsTabBlocked(index))
1645     return;
1646
1647   TabDialogs::FromWebContents(source)->ShowHungRendererDialog();
1648 }
1649
1650 void Browser::RendererResponsive(WebContents* source) {
1651   TabDialogs::FromWebContents(source)->HideHungRendererDialog();
1652 }
1653
1654 void Browser::WorkerCrashed(WebContents* source) {
1655   SimpleAlertInfoBarDelegate::Create(
1656       InfoBarService::FromWebContents(source),
1657       infobars::InfoBarDelegate::kNoIconID,
1658       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1659 }
1660
1661 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1662   if (web_contents == tab_strip_model_->GetActiveWebContents())
1663     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1664 }
1665
1666 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager(
1667     WebContents* source) {
1668   return app_modal::JavaScriptDialogManager::GetInstance();
1669 }
1670
1671 content::ColorChooser* Browser::OpenColorChooser(
1672       WebContents* web_contents,
1673       SkColor initial_color,
1674       const std::vector<content::ColorSuggestion>& suggestions) {
1675   return chrome::ShowColorChooser(web_contents, initial_color);
1676 }
1677
1678 void Browser::RunFileChooser(WebContents* web_contents,
1679                              const content::FileChooserParams& params) {
1680   FileSelectHelper::RunFileChooser(web_contents, params);
1681 }
1682
1683 void Browser::EnumerateDirectory(WebContents* web_contents,
1684                                  int request_id,
1685                                  const base::FilePath& path) {
1686   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1687 }
1688
1689 bool Browser::EmbedsFullscreenWidget() const {
1690   return true;
1691 }
1692
1693 void Browser::EnterFullscreenModeForTab(WebContents* web_contents,
1694                                         const GURL& origin) {
1695   exclusive_access_manager_->fullscreen_controller()->EnterFullscreenModeForTab(
1696       web_contents, origin);
1697 }
1698
1699 void Browser::ExitFullscreenModeForTab(WebContents* web_contents) {
1700   exclusive_access_manager_->fullscreen_controller()->ExitFullscreenModeForTab(
1701       web_contents);
1702 }
1703
1704 bool Browser::IsFullscreenForTabOrPending(
1705     const WebContents* web_contents) const {
1706   return exclusive_access_manager_->fullscreen_controller()
1707       ->IsFullscreenForTabOrPending(web_contents);
1708 }
1709
1710 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1711                                       const std::string& protocol,
1712                                       const GURL& url,
1713                                       bool user_gesture) {
1714   content::BrowserContext* context = web_contents->GetBrowserContext();
1715   if (context->IsOffTheRecord())
1716     return;
1717
1718   ProtocolHandler handler =
1719       ProtocolHandler::CreateProtocolHandler(protocol, url);
1720
1721   ProtocolHandlerRegistry* registry =
1722       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1723   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1724     return;
1725
1726   TabSpecificContentSettings* tab_content_settings =
1727       TabSpecificContentSettings::FromWebContents(web_contents);
1728   if (!user_gesture && window_) {
1729     tab_content_settings->set_pending_protocol_handler(handler);
1730     tab_content_settings->set_previous_protocol_handler(
1731         registry->GetHandlerFor(handler.protocol()));
1732     window_->GetLocationBar()->UpdateContentSettingsIcons();
1733     return;
1734   }
1735
1736   // Make sure content-setting icon is turned off in case the page does
1737   // ungestured and gestured RPH calls.
1738   if (window_) {
1739     tab_content_settings->ClearPendingProtocolHandler();
1740     window_->GetLocationBar()->UpdateContentSettingsIcons();
1741   }
1742
1743   PermissionBubbleManager* bubble_manager =
1744       PermissionBubbleManager::FromWebContents(web_contents);
1745   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1746     bubble_manager->AddRequest(
1747         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1748                                                      url, user_gesture));
1749   } else {
1750     RegisterProtocolHandlerInfoBarDelegate::Create(
1751         InfoBarService::FromWebContents(web_contents), registry, handler);
1752   }
1753 }
1754
1755 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1756                                         const std::string& protocol,
1757                                         const GURL& url,
1758                                         bool user_gesture) {
1759   // user_gesture will be used in case we decide to have confirmation bubble
1760   // for user while un-registering the handler.
1761   content::BrowserContext* context = web_contents->GetBrowserContext();
1762   if (context->IsOffTheRecord())
1763     return;
1764
1765   ProtocolHandler handler =
1766       ProtocolHandler::CreateProtocolHandler(protocol, url);
1767
1768   ProtocolHandlerRegistry* registry =
1769       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1770   registry->RemoveHandler(handler);
1771 }
1772
1773 void Browser::UpdatePreferredSize(WebContents* source,
1774                                   const gfx::Size& pref_size) {
1775   window_->UpdatePreferredSize(source, pref_size);
1776 }
1777
1778 void Browser::ResizeDueToAutoResize(WebContents* source,
1779                                     const gfx::Size& new_size) {
1780   window_->ResizeDueToAutoResize(source, new_size);
1781 }
1782
1783 void Browser::FindReply(WebContents* web_contents,
1784                         int request_id,
1785                         int number_of_matches,
1786                         const gfx::Rect& selection_rect,
1787                         int active_match_ordinal,
1788                         bool final_update) {
1789   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1790   if (!find_tab_helper)
1791     return;
1792
1793   find_tab_helper->HandleFindReply(request_id,
1794                                    number_of_matches,
1795                                    selection_rect,
1796                                    active_match_ordinal,
1797                                    final_update);
1798 }
1799
1800 void Browser::RequestToLockMouse(WebContents* web_contents,
1801                                  bool user_gesture,
1802                                  bool last_unlocked_by_target) {
1803   exclusive_access_manager_->mouse_lock_controller()->RequestToLockMouse(
1804       web_contents, user_gesture, last_unlocked_by_target);
1805 }
1806
1807 void Browser::LostMouseLock() {
1808   exclusive_access_manager_->mouse_lock_controller()->LostMouseLock();
1809 }
1810
1811 void Browser::RequestMediaAccessPermission(
1812     content::WebContents* web_contents,
1813     const content::MediaStreamRequest& request,
1814     const content::MediaResponseCallback& callback) {
1815   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1816 }
1817
1818 bool Browser::CheckMediaAccessPermission(content::WebContents* web_contents,
1819                                          const GURL& security_origin,
1820                                          content::MediaStreamType type) {
1821   return ::CheckMediaAccessPermission(web_contents, security_origin, type);
1822 }
1823
1824 bool Browser::RequestPpapiBrokerPermission(
1825     WebContents* web_contents,
1826     const GURL& url,
1827     const base::FilePath& plugin_path,
1828     const base::Callback<void(bool)>& callback) {
1829   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1830   return true;
1831 }
1832
1833 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1834   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1835   // would disappear on non-NTP pages, resulting in a bigger size for the new
1836   // render view.
1837   gfx::Size size = web_contents->GetContainerBounds().size();
1838   // Don't change render view size if bookmark bar is currently not detached,
1839   // or there's no pending entry, or navigating to a NTP page.
1840   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1841     return size;
1842   const NavigationEntry* pending_entry =
1843       web_contents->GetController().GetPendingEntry();
1844   if (pending_entry &&
1845       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1846     size.Enlarge(
1847         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1848   }
1849   return size;
1850 }
1851
1852 ///////////////////////////////////////////////////////////////////////////////
1853 // Browser, CoreTabHelperDelegate implementation:
1854
1855 void Browser::SwapTabContents(content::WebContents* old_contents,
1856                               content::WebContents* new_contents,
1857                               bool did_start_load,
1858                               bool did_finish_load) {
1859   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1860   DCHECK_NE(TabStripModel::kNoTab, index);
1861   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1862 }
1863
1864 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1865   return chrome::CanReload(this);
1866 }
1867
1868 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1869   return chrome::CanSavePage(this);
1870 }
1871
1872 ///////////////////////////////////////////////////////////////////////////////
1873 // Browser, SearchEngineTabHelperDelegate implementation:
1874
1875 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1876                                        Profile* profile) {
1877   window()->ConfirmAddSearchProvider(template_url, profile);
1878 }
1879
1880 ///////////////////////////////////////////////////////////////////////////////
1881 // Browser, SearchTabHelperDelegate implementation:
1882
1883 void Browser::NavigateOnThumbnailClick(const GURL& url,
1884                                        WindowOpenDisposition disposition,
1885                                        content::WebContents* source_contents) {
1886   DCHECK(source_contents);
1887   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1888   // gets called to handle clicks in the new tab page (to navigate to most
1889   // visited item URLs) and in the search results page (to navigate to
1890   // privileged destinations (e.g. chrome://URLs)).
1891   //
1892   // TODO(kmadhusu): Page transitions to privileged destinations should be
1893   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1894   chrome::NavigateParams params(this, url,
1895                                 ui::PAGE_TRANSITION_AUTO_BOOKMARK);
1896   params.referrer = content::Referrer();
1897   params.source_contents = source_contents;
1898   params.disposition = disposition;
1899   params.is_renderer_initiated = false;
1900   params.initiating_profile = profile_;
1901   chrome::Navigate(&params);
1902 }
1903
1904 void Browser::OnWebContentsInstantSupportDisabled(
1905     const content::WebContents* web_contents) {
1906   DCHECK(web_contents);
1907   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1908     UpdateToolbar(false);
1909 }
1910
1911 OmniboxView* Browser::GetOmniboxView() {
1912   return window_->GetLocationBar()->GetOmniboxView();
1913 }
1914
1915 std::set<std::string> Browser::GetOpenUrls() {
1916   scoped_refptr<history::TopSites> top_sites =
1917       TopSitesFactory::GetForProfile(profile_);
1918   if (!top_sites)  // NULL for Incognito profiles.
1919     return std::set<std::string>();
1920
1921   std::set<std::string> open_urls;
1922   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1923   return open_urls;
1924 }
1925
1926 ///////////////////////////////////////////////////////////////////////////////
1927 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1928
1929 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1930                                     bool blocked) {
1931   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1932   if (index == TabStripModel::kNoTab) {
1933     NOTREACHED();
1934     return;
1935   }
1936   tab_strip_model_->SetTabBlocked(index, blocked);
1937   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1938     web_contents->Focus();
1939 }
1940
1941 web_modal::WebContentsModalDialogHost*
1942 Browser::GetWebContentsModalDialogHost() {
1943   return window_->GetWebContentsModalDialogHost();
1944 }
1945
1946 ///////////////////////////////////////////////////////////////////////////////
1947 // Browser, BookmarkTabHelperDelegate implementation:
1948
1949 void Browser::URLStarredChanged(content::WebContents* web_contents,
1950                                 bool starred) {
1951   if (web_contents == tab_strip_model_->GetActiveWebContents())
1952     window_->SetStarredState(starred);
1953 }
1954
1955 ///////////////////////////////////////////////////////////////////////////////
1956 // Browser, ZoomObserver implementation:
1957
1958 void Browser::OnZoomChanged(
1959     const ui_zoom::ZoomController::ZoomChangedEventData& data) {
1960   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1961     window_->ZoomChangedForActiveTab(data.can_show_bubble);
1962     // Change the zoom commands state based on the zoom state
1963     command_controller_->ZoomStateChanged();
1964   }
1965 }
1966
1967 ///////////////////////////////////////////////////////////////////////////////
1968 // Browser, ui::SelectFileDialog::Listener implementation:
1969
1970 void Browser::FileSelected(const base::FilePath& path, int index,
1971                            void* params) {
1972   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1973 }
1974
1975 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1976                                         int index,
1977                                         void* params) {
1978   profile_->set_last_selected_directory(file_info.file_path.DirName());
1979
1980   GURL url = net::FilePathToFileURL(file_info.local_path);
1981
1982 #if defined(OS_CHROMEOS)
1983   const GURL external_url =
1984       chromeos::CreateExternalFileURLFromPath(profile_, file_info.file_path);
1985   if (!external_url.is_empty())
1986     url = external_url;
1987 #endif
1988
1989   if (url.is_empty())
1990     return;
1991
1992   OpenURL(OpenURLParams(
1993       url, Referrer(), CURRENT_TAB, ui::PAGE_TRANSITION_TYPED, false));
1994 }
1995
1996 ///////////////////////////////////////////////////////////////////////////////
1997 // Browser, content::NotificationObserver implementation:
1998
1999 void Browser::Observe(int type,
2000                       const content::NotificationSource& source,
2001                       const content::NotificationDetails& details) {
2002   switch (type) {
2003     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
2004       Profile* profile = content::Source<Profile>(source).ptr();
2005       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
2006         window()->GetLocationBar()->UpdatePageActions();
2007       break;
2008     }
2009
2010 #if defined(ENABLE_THEMES)
2011     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
2012       window()->UserChangedTheme();
2013       break;
2014 #endif
2015
2016     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
2017       WebContents* web_contents = content::Source<WebContents>(source).ptr();
2018       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
2019         LocationBar* location_bar = window()->GetLocationBar();
2020         if (location_bar)
2021           location_bar->UpdateContentSettingsIcons();
2022       }
2023       break;
2024     }
2025
2026     default:
2027       NOTREACHED() << "Got a notification we didn't register for.";
2028   }
2029 }
2030
2031 #if defined(ENABLE_EXTENSIONS)
2032 ///////////////////////////////////////////////////////////////////////////////
2033 // Browser, extensions::ExtensionRegistryObserver implementation:
2034
2035 void Browser::OnExtensionUninstalled(content::BrowserContext* browser_context,
2036                                      const extensions::Extension* extension,
2037                                      extensions::UninstallReason reason) {
2038   // During window creation on Windows we may end up calling into
2039   // SHAppBarMessage, which internally spawns a nested message loop.This
2040   // makes it possible for us to end up here before window creation has
2041   // completed, at which point window_ is NULL. See 94752 for details.
2042
2043   if (window() && window()->GetLocationBar())
2044     window()->GetLocationBar()->UpdatePageActions();
2045 }
2046
2047 void Browser::OnExtensionLoaded(content::BrowserContext* browser_context,
2048                                 const extensions::Extension* extension) {
2049   command_controller_->ExtensionStateChanged();
2050 }
2051
2052 void Browser::OnExtensionUnloaded(
2053     content::BrowserContext* browser_context,
2054     const extensions::Extension* extension,
2055     extensions::UnloadedExtensionInfo::Reason reason) {
2056   command_controller_->ExtensionStateChanged();
2057   if (window()->GetLocationBar())
2058     window()->GetLocationBar()->UpdatePageActions();
2059
2060   // Close any tabs from the unloaded extension, unless it's terminated,
2061   // in which case let the sad tabs remain.
2062   if (reason != extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
2063     // Iterate backwards as we may remove items while iterating.
2064     for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
2065       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2066       // Two cases are handled here:
2067
2068       // - The scheme check is for when an extension page is loaded in a
2069       // tab, e.g. chrome-extension://id/page.html.
2070       // - The extension_app check is for apps, which can have non-extension
2071       // schemes, e.g. https://mail.google.com if you have the Gmail app
2072       // installed.
2073       if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
2074            web_contents->GetURL().host() == extension->id()) ||
2075           (extensions::TabHelper::FromWebContents(web_contents)
2076                ->extension_app() == extension)) {
2077         tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
2078       }
2079     }
2080   }
2081 }
2082 #endif  // defined(ENABLE_EXTENSIONS)
2083
2084 ///////////////////////////////////////////////////////////////////////////////
2085 // Browser, translate::ContentTranslateDriver::Observer implementation:
2086
2087 void Browser::OnIsPageTranslatedChanged(content::WebContents* source) {
2088   DCHECK(source);
2089   if (tab_strip_model_->GetActiveWebContents() == source) {
2090     window_->SetTranslateIconToggled(
2091         ChromeTranslateClient::FromWebContents(
2092             source)->GetLanguageState().IsPageTranslated());
2093   }
2094 }
2095
2096 void Browser::OnTranslateEnabledChanged(content::WebContents* source) {
2097   DCHECK(source);
2098   if (tab_strip_model_->GetActiveWebContents() == source)
2099     UpdateToolbar(false);
2100 }
2101
2102 ///////////////////////////////////////////////////////////////////////////////
2103 // Browser, Command and state updating (private):
2104
2105 void Browser::OnDevToolsDisabledChanged() {
2106   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2107     content::DevToolsAgentHost::DetachAllClients();
2108 }
2109
2110 ///////////////////////////////////////////////////////////////////////////////
2111 // Browser, UI update coalescing and handling (private):
2112
2113 void Browser::UpdateToolbar(bool should_restore_state) {
2114   window_->UpdateToolbar(should_restore_state ?
2115       tab_strip_model_->GetActiveWebContents() : NULL);
2116 }
2117
2118 void Browser::ScheduleUIUpdate(WebContents* source,
2119                                unsigned changed_flags) {
2120   DCHECK(source);
2121   int index = tab_strip_model_->GetIndexOfWebContents(source);
2122   DCHECK_NE(TabStripModel::kNoTab, index);
2123
2124   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2125   // is fixed.
2126   tracked_objects::ScopedTracker tracking_profile1(
2127       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2128           "466285 Browser::ScheduleUIUpdate::Toolbar"));
2129   // Do some synchronous updates.
2130   if (changed_flags & content::INVALIDATE_TYPE_URL) {
2131     if (source == tab_strip_model_->GetActiveWebContents()) {
2132       // Only update the URL for the current tab. Note that we do not update
2133       // the navigation commands since those would have already been updated
2134       // synchronously by NavigationStateChanged.
2135       UpdateToolbar(false);
2136     } else {
2137       // Clear the saved tab state for the tab that navigated, so that we don't
2138       // restore any user text after the old URL has been invalidated (e.g.,
2139       // after a new navigation commits in that tab while unfocused).
2140       window_->ResetToolbarTabState(source);
2141     }
2142     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2143   }
2144
2145   // TODO(erikchen): Remove ScopedTracker below once http://crbug.com/466285
2146   // is fixed.
2147   tracked_objects::ScopedTracker tracking_profile2(
2148       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2149           "466285 Browser::ScheduleUIUpdate::TabStripModel"));
2150   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2151     // Update the loading state synchronously. This is so the throbber will
2152     // immediately start/stop, which gives a more snappy feel. We want to do
2153     // this for any tab so they start & stop quickly.
2154     tab_strip_model_->UpdateWebContentsStateAt(
2155         tab_strip_model_->GetIndexOfWebContents(source),
2156         TabStripModelObserver::LOADING_ONLY);
2157     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2158     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2159     // changed_flags.
2160   }
2161
2162   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2163     // To correctly calculate whether the title changed while not loading
2164     // we need to process the update synchronously. This state only matters for
2165     // the TabStripModel, so we notify the TabStripModel now and notify others
2166     // asynchronously.
2167     tab_strip_model_->UpdateWebContentsStateAt(
2168         tab_strip_model_->GetIndexOfWebContents(source),
2169         TabStripModelObserver::TITLE_NOT_LOADING);
2170   }
2171
2172   // If the only updates were synchronously handled above, we're done.
2173   if (changed_flags == 0)
2174     return;
2175
2176   // Save the dirty bits.
2177   scheduled_updates_[source] |= changed_flags;
2178
2179   if (!chrome_updater_factory_.HasWeakPtrs()) {
2180     // No task currently scheduled, start another.
2181     base::MessageLoop::current()->PostDelayedTask(
2182         FROM_HERE,
2183         base::Bind(&Browser::ProcessPendingUIUpdates,
2184                    chrome_updater_factory_.GetWeakPtr()),
2185         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2186   }
2187 }
2188
2189 void Browser::ProcessPendingUIUpdates() {
2190 #ifndef NDEBUG
2191   // Validate that all tabs we have pending updates for exist. This is scary
2192   // because the pending list must be kept in sync with any detached or
2193   // deleted tabs.
2194   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2195        i != scheduled_updates_.end(); ++i) {
2196     bool found = false;
2197     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2198       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2199         found = true;
2200         break;
2201       }
2202     }
2203     DCHECK(found);
2204   }
2205 #endif
2206
2207   chrome_updater_factory_.InvalidateWeakPtrs();
2208
2209   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2210   // is fixed.
2211   tracked_objects::ScopedTracker tracking_profile1(
2212       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2213           "467185 Browser::ProcessPendingUIUpdates1"));
2214
2215   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2216        i != scheduled_updates_.end(); ++i) {
2217     // Do not dereference |contents|, it may be out-of-date!
2218     const WebContents* contents = i->first;
2219     unsigned flags = i->second;
2220
2221     if (contents == tab_strip_model_->GetActiveWebContents()) {
2222       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2223       // is fixed.
2224       tracked_objects::ScopedTracker tracking_profile2(
2225           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2226               "467185 Browser::ProcessPendingUIUpdates2"));
2227
2228       // Updates that only matter when the tab is selected go here.
2229
2230       // Updating the URL happens synchronously in ScheduleUIUpdate.
2231       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2232         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2233             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2234       }
2235
2236       if (flags & (content::INVALIDATE_TYPE_TAB |
2237                    content::INVALIDATE_TYPE_TITLE)) {
2238         window_->UpdateTitleBar();
2239       }
2240     }
2241
2242     // Updates that don't depend upon the selected state go here.
2243     if (flags &
2244         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2245       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2246       // is fixed.
2247       tracked_objects::ScopedTracker tracking_profile3(
2248           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2249               "467185 Browser::ProcessPendingUIUpdates3"));
2250       tab_strip_model_->UpdateWebContentsStateAt(
2251           tab_strip_model_->GetIndexOfWebContents(contents),
2252           TabStripModelObserver::ALL);
2253     }
2254
2255     // Update the bookmark bar. It may happen that the tab is crashed, and if
2256     // so, the bookmark bar should be hidden.
2257     if (flags & content::INVALIDATE_TYPE_TAB) {
2258       // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2259       // is fixed.
2260       tracked_objects::ScopedTracker tracking_profile4(
2261           FROM_HERE_WITH_EXPLICIT_FUNCTION(
2262               "467185 Browser::ProcessPendingUIUpdates4"));
2263       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2264     }
2265
2266     // We don't need to process INVALIDATE_STATE, since that's not visible.
2267   }
2268
2269   scheduled_updates_.clear();
2270 }
2271
2272 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2273   if (!contents)
2274     return;
2275
2276   UpdateMap::iterator i = scheduled_updates_.find(contents);
2277   if (i != scheduled_updates_.end())
2278     scheduled_updates_.erase(i);
2279 }
2280
2281 ///////////////////////////////////////////////////////////////////////////////
2282 // Browser, Getters for UI (private):
2283
2284 StatusBubble* Browser::GetStatusBubble() {
2285   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2286   if (chrome::IsRunningInAppMode())
2287     return NULL;
2288
2289   return window_ ? window_->GetStatusBubble() : NULL;
2290 }
2291
2292 ///////////////////////////////////////////////////////////////////////////////
2293 // Browser, Session restore functions (private):
2294
2295 void Browser::SyncHistoryWithTabs(int index) {
2296   SessionService* session_service =
2297       SessionServiceFactory::GetForProfileIfExisting(profile());
2298   if (session_service) {
2299     for (int i = index; i < tab_strip_model_->count(); ++i) {
2300       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2301       if (web_contents) {
2302         SessionTabHelper* session_tab_helper =
2303             SessionTabHelper::FromWebContents(web_contents);
2304         session_service->SetTabIndexInWindow(
2305             session_id(), session_tab_helper->session_id(), i);
2306         session_service->SetPinnedState(
2307             session_id(),
2308             session_tab_helper->session_id(),
2309             tab_strip_model_->IsTabPinned(i));
2310       }
2311     }
2312   }
2313 }
2314
2315 ///////////////////////////////////////////////////////////////////////////////
2316 // Browser, In-progress download termination handling (private):
2317
2318 bool Browser::CanCloseWithInProgressDownloads() {
2319   // If we've prompted, we need to hear from the user before we
2320   // can close.
2321   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2322     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2323
2324   int num_downloads_blocking;
2325   Browser::DownloadClosePreventionType dialog_type =
2326       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2327   if (dialog_type == DOWNLOAD_CLOSE_OK)
2328     return true;
2329
2330   // Closing this window will kill some downloads; prompt to make sure
2331   // that's ok.
2332   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2333   window_->ConfirmBrowserCloseWithPendingDownloads(
2334       num_downloads_blocking,
2335       dialog_type,
2336       false,
2337       base::Bind(&Browser::InProgressDownloadResponse,
2338                  weak_factory_.GetWeakPtr()));
2339
2340   // Return false so the browser does not close.  We'll close if the user
2341   // confirms in the dialog.
2342   return false;
2343 }
2344
2345 ///////////////////////////////////////////////////////////////////////////////
2346 // Browser, Assorted utility functions (private):
2347
2348 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2349   Browser* delegate = set_delegate ? this : NULL;
2350   // WebContents...
2351   web_contents->SetDelegate(delegate);
2352
2353   // ...and all the helpers.
2354   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2355   WebContentsModalDialogManager::FromWebContents(web_contents)->
2356       SetDelegate(delegate);
2357   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2358   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2359   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2360   translate::ContentTranslateDriver& content_translate_driver =
2361       ChromeTranslateClient::FromWebContents(web_contents)->translate_driver();
2362   if (delegate) {
2363     ui_zoom::ZoomController::FromWebContents(web_contents)->AddObserver(this);
2364     content_translate_driver.AddObserver(this);
2365   } else {
2366     ui_zoom::ZoomController::FromWebContents(web_contents)->RemoveObserver(
2367         this);
2368     content_translate_driver.RemoveObserver(this);
2369   }
2370 }
2371
2372 void Browser::CloseFrame() {
2373   window_->Close();
2374 }
2375
2376 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2377                                 int index,
2378                                 DetachType type) {
2379   if (type == DETACH_TYPE_DETACH) {
2380     // Save the current location bar state, but only if the tab being detached
2381     // is the selected tab.  Because saving state can conditionally revert the
2382     // location bar, saving the current tab's location bar state to a
2383     // non-selected tab can corrupt both tabs.
2384     if (contents == tab_strip_model_->GetActiveWebContents()) {
2385       LocationBar* location_bar = window()->GetLocationBar();
2386       if (location_bar)
2387         location_bar->SaveStateToContents(contents);
2388     }
2389
2390     if (!tab_strip_model_->closing_all())
2391       SyncHistoryWithTabs(0);
2392   }
2393
2394   SetAsDelegate(contents, false);
2395   RemoveScheduledUpdatesFor(contents);
2396
2397   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2398     find_bar_controller_->ChangeWebContents(NULL);
2399   }
2400
2401   // Stop observing search model changes for this tab.
2402   search_delegate_->OnTabDetached(contents);
2403
2404   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2405     if (interstitial_observers_[i]->web_contents() != contents)
2406       continue;
2407
2408     delete interstitial_observers_[i];
2409     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2410     return;
2411   }
2412 }
2413
2414 bool Browser::SupportsLocationBar() const {
2415   // Tabbed browser always show a location bar.
2416   if (is_type_tabbed())
2417     return true;
2418
2419   // Non-app windows that aren't tabbed or system windows should always show a
2420   // location bar, unless they are from a trusted source.
2421   if (!is_app())
2422     return !is_trusted_source();
2423
2424   if (bookmark_app_controller_)
2425     return bookmark_app_controller_->SupportsLocationBar();
2426
2427   return false;
2428 }
2429
2430 bool Browser::ShouldUseWebAppFrame() const {
2431   // Only use the web app frame for apps in ash, and only if the web app frame
2432   // is enabled.
2433   if (!is_app())
2434     return false;
2435
2436   if (bookmark_app_controller_)
2437     return bookmark_app_controller_->should_use_web_app_frame();
2438
2439   return false;
2440 }
2441
2442 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2443                                         bool check_fullscreen) const {
2444   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2445
2446   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2447
2448   if (is_type_tabbed())
2449     features |= FEATURE_BOOKMARKBAR;
2450
2451   if (!hide_ui_for_fullscreen) {
2452     if (!is_type_tabbed())
2453       features |= FEATURE_TITLEBAR;
2454
2455     if (is_type_tabbed())
2456       features |= FEATURE_TABSTRIP;
2457
2458     if (is_type_tabbed())
2459       features |= FEATURE_TOOLBAR;
2460
2461     if (SupportsLocationBar())
2462       features |= FEATURE_LOCATIONBAR;
2463
2464     if (ShouldUseWebAppFrame())
2465       features |= FEATURE_WEBAPPFRAME;
2466   }
2467   return !!(features & feature);
2468 }
2469
2470 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2471   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2472   // fixed.
2473   tracked_objects::ScopedTracker tracking_profile1(
2474       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2475           "467185 Browser::UpdateBookmarkBarState1"));
2476   BookmarkBar::State state;
2477   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2478   // mode, unless on the new tab page.
2479   if (profile_->IsGuestSession()) {
2480     state = BookmarkBar::HIDDEN;
2481   } else if (browser_defaults::bookmarks_enabled &&
2482       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2483       !ShouldHideUIForFullscreen()) {
2484     state = BookmarkBar::SHOW;
2485   } else {
2486     // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185
2487     // is fixed.
2488     tracked_objects::ScopedTracker tracking_profile2(
2489         FROM_HERE_WITH_EXPLICIT_FUNCTION(
2490             "467185 Browser::UpdateBookmarkBarState2"));
2491     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2492     BookmarkTabHelper* bookmark_tab_helper =
2493         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2494     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2495       state = BookmarkBar::DETACHED;
2496     else
2497       state = BookmarkBar::HIDDEN;
2498   }
2499
2500   if (state == bookmark_bar_state_)
2501     return;
2502
2503   bookmark_bar_state_ = state;
2504
2505   if (!window_)
2506     return;  // This is called from the constructor when window_ is NULL.
2507
2508   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2509     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2510     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2511     // end up querying state once they process the tab switch.
2512     return;
2513   }
2514
2515   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/467185 is
2516   // fixed.
2517   tracked_objects::ScopedTracker tracking_profile3(
2518       FROM_HERE_WITH_EXPLICIT_FUNCTION(
2519           "467185 Browser::UpdateBookmarkBarState3"));
2520
2521   bool should_animate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2522   window_->BookmarkBarStateChanged(should_animate ?
2523       BookmarkBar::ANIMATE_STATE_CHANGE :
2524       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2525 }
2526
2527 bool Browser::ShouldHideUIForFullscreen() const {
2528   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2529   // keep the controls in a slide-down panel.
2530   return window_ && window_->ShouldHideUIForFullscreen();
2531 }
2532
2533 bool Browser::MaybeCreateBackgroundContents(
2534     int route_id,
2535     int main_frame_route_id,
2536     WebContents* opener_web_contents,
2537     const base::string16& frame_name,
2538     const GURL& target_url,
2539     const std::string& partition_id,
2540     content::SessionStorageNamespace* session_storage_namespace) {
2541   GURL opener_url = opener_web_contents->GetURL();
2542   ExtensionService* extensions_service =
2543       extensions::ExtensionSystem::Get(profile_)->extension_service();
2544
2545   if (!opener_url.is_valid() ||
2546       frame_name.empty() ||
2547       !extensions_service ||
2548       !extensions_service->is_ready())
2549     return false;
2550
2551   // Only hosted apps have web extents, so this ensures that only hosted apps
2552   // can create BackgroundContents. We don't have to check for background
2553   // permission as that is checked in RenderMessageFilter when the CreateWindow
2554   // message is processed.
2555   const Extension* extension = extensions::ExtensionRegistry::Get(profile_)
2556                                    ->enabled_extensions()
2557                                    .GetHostedAppByURL(opener_url);
2558   if (!extension)
2559     return false;
2560
2561   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2562   BackgroundContentsService* service =
2563       BackgroundContentsServiceFactory::GetForProfile(profile_);
2564   if (!service)
2565     return false;
2566
2567   // Ensure that we're trying to open this from the extension's process.
2568   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2569   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2570   if (!opener_site_instance->GetProcess() ||
2571       !process_map->Contains(
2572           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2573     return false;
2574   }
2575
2576   // Only allow a single background contents per app.
2577   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2578   BackgroundContents* existing =
2579       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2580   if (existing) {
2581     // For non-scriptable background contents, ignore the request altogether,
2582     // (returning true, so that a regular WebContents isn't created either).
2583     if (!allow_js_access)
2584       return true;
2585     // For scriptable background pages, if one already exists, close it (even
2586     // if it was specified in the manifest).
2587     delete existing;
2588   }
2589
2590   // If script access is not allowed, create the the background contents in a
2591   // new SiteInstance, so that a separate process is used.
2592   scoped_refptr<content::SiteInstance> site_instance =
2593       allow_js_access ?
2594       opener_site_instance :
2595       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2596
2597   // Passed all the checks, so this should be created as a BackgroundContents.
2598   BackgroundContents* contents =
2599       service->CreateBackgroundContents(site_instance.get(),
2600                                         route_id,
2601                                         main_frame_route_id,
2602                                         profile_,
2603                                         frame_name,
2604                                         base::ASCIIToUTF16(extension->id()),
2605                                         partition_id,
2606                                         session_storage_namespace);
2607
2608   // When a separate process is used, the original renderer cannot access the
2609   // new window later, thus we need to navigate the window now.
2610   if (contents && !allow_js_access) {
2611     contents->web_contents()->GetController().LoadURL(
2612         target_url,
2613         content::Referrer(),
2614         ui::PAGE_TRANSITION_LINK,
2615         std::string());  // No extra headers.
2616   }
2617
2618   return contents != NULL;
2619 }