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