chrome/browser/ui/browser.cc

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