chrome/browser/ui/browser.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/browser.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #include <shellapi.h>
  10 #endif  // defined(OS_WIN)
  11
  12 #include <algorithm>
  13 #include <string>
  14
  15 #include "base/base_paths.h"
  16 #include "base/bind.h"
  17 #include "base/command_line.h"
  18 #include "base/logging.h"
  19 #include "base/metrics/histogram.h"
  20 #include "base/path_service.h"
  21 #include "base/prefs/pref_service.h"
  22 #include "base/process/process_info.h"
  23 #include "base/strings/string_number_conversions.h"
  24 #include "base/strings/string_util.h"
  25 #include "base/strings/stringprintf.h"
  26 #include "base/strings/utf_string_conversions.h"
  27 #include "base/threading/thread.h"
  28 #include "base/threading/thread_restrictions.h"
  29 #include "base/time/time.h"
  30 #include "chrome/app/chrome_command_ids.h"
  31 #include "chrome/browser/app_mode/app_mode_utils.h"
  32 #include "chrome/browser/autofill/personal_data_manager_factory.h"
  33 #include "chrome/browser/background/background_contents_service.h"
  34 #include "chrome/browser/background/background_contents_service_factory.h"
  35 #include "chrome/browser/browser_process.h"
  36 #include "chrome/browser/browser_shutdown.h"
  37 #include "chrome/browser/character_encoding.h"
  38 #include "chrome/browser/chrome_notification_types.h"
  39 #include "chrome/browser/chrome_page_zoom.h"
  40 #include "chrome/browser/content_settings/host_content_settings_map.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.h"
  63 #include "chrome/browser/infobars/infobar_service.h"
  64 #include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
  65 #include "chrome/browser/lifetime/application_lifetime.h"
  66 #include "chrome/browser/notifications/notification_ui_manager.h"
  67 #include "chrome/browser/pepper_broker_infobar_delegate.h"
  68 #include "chrome/browser/prefs/incognito_mode_prefs.h"
  69 #include "chrome/browser/profiles/profile.h"
  70 #include "chrome/browser/profiles/profile_destroyer.h"
  71 #include "chrome/browser/profiles/profile_metrics.h"
  72 #include "chrome/browser/repost_form_warning_controller.h"
  73 #include "chrome/browser/search/search.h"
  74 #include "chrome/browser/sessions/session_service.h"
  75 #include "chrome/browser/sessions/session_service_factory.h"
  76 #include "chrome/browser/sessions/session_tab_helper.h"
  77 #include "chrome/browser/sessions/session_types.h"
  78 #include "chrome/browser/sessions/tab_restore_service.h"
  79 #include "chrome/browser/sessions/tab_restore_service_factory.h"
  80 #include "chrome/browser/sync/profile_sync_service.h"
  81 #include "chrome/browser/sync/profile_sync_service_factory.h"
  82 #include "chrome/browser/sync/sync_ui_util.h"
  83 #include "chrome/browser/tab_contents/background_contents.h"
  84 #include "chrome/browser/tab_contents/retargeting_details.h"
  85 #include "chrome/browser/tab_contents/tab_util.h"
  86 #include "chrome/browser/themes/theme_service.h"
  87 #include "chrome/browser/themes/theme_service_factory.h"
  88 #include "chrome/browser/translate/chrome_translate_client.h"
  89 #include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
  90 #include "chrome/browser/ui/autofill/chrome_autofill_client.h"
  91 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
  92 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  93 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  94 #include "chrome/browser/ui/browser_command_controller.h"
  95 #include "chrome/browser/ui/browser_commands.h"
  96 #include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
  97 #include "chrome/browser/ui/browser_content_translate_driver_observer.h"
  98 #include "chrome/browser/ui/browser_dialogs.h"
  99 #include "chrome/browser/ui/browser_finder.h"
 100 #include "chrome/browser/ui/browser_instant_controller.h"
 101 #include "chrome/browser/ui/browser_iterator.h"
 102 #include "chrome/browser/ui/browser_list.h"
 103 #include "chrome/browser/ui/browser_navigator.h"
 104 #include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
 105 #include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
 106 #include "chrome/browser/ui/browser_tabstrip.h"
 107 #include "chrome/browser/ui/browser_toolbar_model_delegate.h"
 108 #include "chrome/browser/ui/browser_ui_prefs.h"
 109 #include "chrome/browser/ui/browser_window.h"
 110 #include "chrome/browser/ui/chrome_pages.h"
 111 #include "chrome/browser/ui/chrome_select_file_policy.h"
 112 #include "chrome/browser/ui/fast_unload_controller.h"
 113 #include "chrome/browser/ui/find_bar/find_bar.h"
 114 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 115 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 116 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 117 #include "chrome/browser/ui/global_error/global_error.h"
 118 #include "chrome/browser/ui/global_error/global_error_service.h"
 119 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 120 #include "chrome/browser/ui/location_bar/location_bar.h"
 121 #include "chrome/browser/ui/media_utils.h"
 122 #include "chrome/browser/ui/search/search_delegate.h"
 123 #include "chrome/browser/ui/search/search_model.h"
 124 #include "chrome/browser/ui/search/search_tab_helper.h"
 125 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 126 #include "chrome/browser/ui/settings_window_manager.h"
 127 #include "chrome/browser/ui/singleton_tabs.h"
 128 #include "chrome/browser/ui/status_bubble.h"
 129 #include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
 130 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 131 #include "chrome/browser/ui/tab_helpers.h"
 132 #include "chrome/browser/ui/tab_modal_confirm_dialog.h"
 133 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 134 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 135 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 136 #include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
 137 #include "chrome/browser/ui/unload_controller.h"
 138 #include "chrome/browser/ui/validation_message_bubble.h"
 139 #include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
 140 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
 141 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 142 #include "chrome/browser/ui/window_sizer/window_sizer.h"
 143 #include "chrome/browser/ui/zoom/zoom_controller.h"
 144 #include "chrome/browser/upgrade_detector.h"
 145 #include "chrome/browser/web_applications/web_app.h"
 146 #include "chrome/common/chrome_constants.h"
 147 #include "chrome/common/chrome_switches.h"
 148 #include "chrome/common/custom_handlers/protocol_handler.h"
 149 #include "chrome/common/pref_names.h"
 150 #include "chrome/common/profiling.h"
 151 #include "chrome/common/search_types.h"
 152 #include "chrome/common/url_constants.h"
 153 #include "chrome/grit/chromium_strings.h"
 154 #include "chrome/grit/generated_resources.h"
 155 #include "chrome/grit/locale_settings.h"
 156 #include "components/bookmarks/browser/bookmark_model.h"
 157 #include "components/bookmarks/browser/bookmark_utils.h"
 158 #include "components/google/core/browser/google_url_tracker.h"
 159 #include "components/search/search.h"
 160 #include "components/startup_metric_utils/startup_metric_utils.h"
 161 #include "components/web_modal/popup_manager.h"
 162 #include "components/web_modal/web_contents_modal_dialog_manager.h"
 163 #include "content/public/browser/devtools_agent_host.h"
 164 #include "content/public/browser/download_item.h"
 165 #include "content/public/browser/download_manager.h"
 166 #include "content/public/browser/interstitial_page.h"
 167 #include "content/public/browser/invalidate_type.h"
 168 #include "content/public/browser/navigation_controller.h"
 169 #include "content/public/browser/navigation_entry.h"
 170 #include "content/public/browser/notification_details.h"
 171 #include "content/public/browser/notification_service.h"
 172 #include "content/public/browser/plugin_service.h"
 173 #include "content/public/browser/render_process_host.h"
 174 #include "content/public/browser/render_view_host.h"
 175 #include "content/public/browser/render_widget_host_view.h"
 176 #include "content/public/browser/site_instance.h"
 177 #include "content/public/browser/user_metrics.h"
 178 #include "content/public/browser/web_contents.h"
 179 #include "content/public/common/content_switches.h"
 180 #include "content/public/common/page_zoom.h"
 181 #include "content/public/common/renderer_preferences.h"
 182 #include "content/public/common/webplugininfo.h"
 183 #include "extensions/browser/extension_prefs.h"
 184 #include "extensions/browser/extension_system.h"
 185 #include "extensions/common/constants.h"
 186 #include "extensions/common/extension.h"
 187 #include "extensions/common/manifest_handlers/background_info.h"
 188 #include "net/base/filename_util.h"
 189 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 190 #include "net/cookies/cookie_monster.h"
 191 #include "net/url_request/url_request_context.h"
 192 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 193 #include "ui/base/l10n/l10n_util.h"
 194 #include "ui/base/window_open_disposition.h"
 195 #include "ui/gfx/point.h"
 196 #include "ui/shell_dialogs/selected_file_info.h"
 197
 198 #if defined(OS_WIN)
 199 #include "base/win/metro.h"
 200 #include "chrome/browser/ssl/ssl_error_info.h"
 201 #include "chrome/browser/task_manager/task_manager.h"
 202 #include "chrome/browser/ui/view_ids.h"
 203 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 204 #include "ui/base/win/shell.h"
 205 #endif  // OS_WIN
 206
 207 #if defined(OS_CHROMEOS)
 208 #include "chrome/browser/chromeos/drive/file_system_util.h"
 209 #endif
 210
 211 #if defined(USE_ASH)
 212 #include "ash/ash_switches.h"
 213 #endif
 214
 215 using base::TimeDelta;
 216 using base::UserMetricsAction;
 217 using content::NativeWebKeyboardEvent;
 218 using content::NavigationController;
 219 using content::NavigationEntry;
 220 using content::OpenURLParams;
 221 using content::PluginService;
 222 using content::Referrer;
 223 using content::RenderWidgetHostView;
 224 using content::SiteInstance;
 225 using content::WebContents;
 226 using extensions::Extension;
 227 using ui::WebDialogDelegate;
 228 using web_modal::WebContentsModalDialogManager;
 229 using blink::WebWindowFeatures;
 230
 231 ///////////////////////////////////////////////////////////////////////////////
 232
 233 namespace {
 234
 235 // How long we wait before updating the browser chrome while loading a page.
 236 const int kUIUpdateCoalescingTimeMS = 200;
 237
 238 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 239   return BrowserWindow::CreateBrowserWindow(browser);
 240 }
 241
 242 // Is the fast tab unload experiment enabled?
 243 bool IsFastTabUnloadEnabled() {
 244   return CommandLine::ForCurrentProcess()->HasSwitch(
 245         switches::kEnableFastUnload);
 246 }
 247
 248 }  // namespace
 249
 250 ////////////////////////////////////////////////////////////////////////////////
 251 // Browser, CreateParams:
 252
 253 Browser::CreateParams::CreateParams(Profile* profile,
 254                                     chrome::HostDesktopType host_desktop_type)
 255     : type(TYPE_TABBED),
 256       profile(profile),
 257       host_desktop_type(host_desktop_type),
 258       trusted_source(false),
 259       initial_show_state(ui::SHOW_STATE_DEFAULT),
 260       is_session_restore(false),
 261       window(NULL) {
 262 }
 263
 264 Browser::CreateParams::CreateParams(Type type,
 265                                     Profile* profile,
 266                                     chrome::HostDesktopType host_desktop_type)
 267     : type(type),
 268       profile(profile),
 269       host_desktop_type(host_desktop_type),
 270       trusted_source(false),
 271       initial_show_state(ui::SHOW_STATE_DEFAULT),
 272       is_session_restore(false),
 273       window(NULL) {
 274 }
 275
 276 // static
 277 Browser::CreateParams Browser::CreateParams::CreateForApp(
 278     const std::string& app_name,
 279     bool trusted_source,
 280     const gfx::Rect& window_bounds,
 281     Profile* profile,
 282     chrome::HostDesktopType host_desktop_type) {
 283   DCHECK(!app_name.empty());
 284
 285   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 286   params.app_name = app_name;
 287   params.trusted_source = trusted_source;
 288   params.initial_bounds = window_bounds;
 289
 290   return params;
 291 }
 292
 293 // static
 294 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 295     Profile* profile,
 296     chrome::HostDesktopType host_desktop_type) {
 297   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 298   params.app_name = DevToolsWindow::kDevToolsApp;
 299   params.trusted_source = true;
 300   return params;
 301 }
 302
 303 ////////////////////////////////////////////////////////////////////////////////
 304 // Browser, InterstitialObserver:
 305
 306 class Browser::InterstitialObserver : public content::WebContentsObserver {
 307  public:
 308   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 309       : WebContentsObserver(web_contents),
 310         browser_(browser) {
 311   }
 312
 313   virtual void DidAttachInterstitialPage() OVERRIDE {
 314     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 315   }
 316
 317   virtual void DidDetachInterstitialPage() OVERRIDE {
 318     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 319   }
 320
 321  private:
 322   Browser* browser_;
 323
 324   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 325 };
 326
 327 ///////////////////////////////////////////////////////////////////////////////
 328 // Browser, Constructors, Creation, Showing:
 329
 330 Browser::Browser(const CreateParams& params)
 331     : type_(params.type),
 332       profile_(params.profile),
 333       window_(NULL),
 334       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 335       tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
 336                                          params.profile)),
 337       app_name_(params.app_name),
 338       is_trusted_source_(params.trusted_source),
 339       cancel_download_confirmation_state_(NOT_PROMPTED),
 340       override_bounds_(params.initial_bounds),
 341       initial_show_state_(params.initial_show_state),
 342       is_session_restore_(params.is_session_restore),
 343       host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
 344           params.host_desktop_type)),
 345       content_setting_bubble_model_delegate_(
 346           new BrowserContentSettingBubbleModelDelegate(this)),
 347       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 348       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 349       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 350       bookmark_bar_state_(BookmarkBar::HIDDEN),
 351       command_controller_(new chrome::BrowserCommandController(this)),
 352       window_has_shown_(false),
 353       chrome_updater_factory_(this),
 354       weak_factory_(this),
 355       translate_driver_observer_(
 356           new BrowserContentTranslateDriverObserver(this)) {
 357   // If this causes a crash then a window is being opened using a profile type
 358   // that is disallowed by policy. The crash prevents the disabled window type
 359   // from opening at all, but the path that triggered it should be fixed.
 360   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 361   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 362       << "Only off the record browser may be opened in guest mode";
 363
 364   // TODO(jeremy): Move to initializer list once flag is removed.
 365   if (IsFastTabUnloadEnabled())
 366     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 367   else
 368     unload_controller_.reset(new chrome::UnloadController(this));
 369
 370   tab_strip_model_->AddObserver(this);
 371
 372   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 373   search_model_.reset(new SearchModel());
 374   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 375
 376   registrar_.Add(this,
 377                  extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 378                  content::Source<Profile>(profile_->GetOriginalProfile()));
 379   registrar_.Add(this,
 380                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 381                  content::Source<Profile>(profile_->GetOriginalProfile()));
 382   registrar_.Add(this,
 383                  extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
 384                  content::Source<Profile>(profile_->GetOriginalProfile()));
 385   registrar_.Add(this,
 386                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 387                  content::NotificationService::AllSources());
 388 #if defined(ENABLE_THEMES)
 389   registrar_.Add(
 390       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 391       content::Source<ThemeService>(
 392           ThemeServiceFactory::GetForProfile(profile_)));
 393 #endif
 394   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 395                  content::NotificationService::AllSources());
 396
 397   profile_pref_registrar_.Init(profile_->GetPrefs());
 398   profile_pref_registrar_.Add(
 399       prefs::kDevToolsDisabled,
 400       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 401   profile_pref_registrar_.Add(
 402       bookmarks::prefs::kShowBookmarkBar,
 403       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 404                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 405
 406   BrowserList::AddBrowser(this);
 407
 408   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 409   // or you'll get a nasty surprise when you run the incognito tests.
 410   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 411                              profile_->GetPrefs());
 412
 413   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 414     instant_controller_.reset(new BrowserInstantController(this));
 415
 416   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 417
 418   ProfileMetrics::LogProfileLaunch(profile_);
 419
 420   window_ = params.window ? params.window : CreateBrowserWindow(this);
 421
 422   // Create the extension window controller before sending notifications.
 423   extension_window_controller_.reset(
 424       new BrowserExtensionWindowController(this));
 425
 426   SessionService* session_service =
 427       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 428   if (session_service)
 429     session_service->WindowOpened(this);
 430
 431   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 432   //             replace uses of this with BL's notifications.
 433   content::NotificationService::current()->Notify(
 434       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 435       content::Source<Browser>(this),
 436       content::NotificationService::NoDetails());
 437
 438   // TODO(beng): move to ChromeBrowserMain:
 439   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 440 #if defined(OS_WIN)
 441     // Notify PDM that this is a first run.
 442     ImportAutofillDataWin(
 443         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 444 #endif  // defined(OS_WIN)
 445   }
 446
 447   fullscreen_controller_.reset(new FullscreenController(this));
 448
 449   // Must be initialized after window_.
 450   // Also: surprise! a modal dialog host is not necessary to host modal dialogs
 451   // without a modal dialog host, so that value may be null.
 452   popup_manager_.reset(new web_modal::PopupManager(
 453       GetWebContentsModalDialogHost()));
 454 }
 455
 456 Browser::~Browser() {
 457   // Stop observing notifications before continuing with destruction. Profile
 458   // destruction will unload extensions and reentrant calls to Browser:: should
 459   // be avoided while it is being torn down.
 460   registrar_.RemoveAll();
 461
 462   // The tab strip should not have any tabs at this point.
 463   DCHECK(tab_strip_model_->empty());
 464   tab_strip_model_->RemoveObserver(this);
 465
 466   // Destroy the BrowserCommandController before removing the browser, so that
 467   // it doesn't act on any notifications that are sent as a result of removing
 468   // the browser.
 469   command_controller_.reset();
 470   BrowserList::RemoveBrowser(this);
 471
 472   SessionService* session_service =
 473       SessionServiceFactory::GetForProfile(profile_);
 474   if (session_service)
 475     session_service->WindowClosed(session_id_);
 476
 477   TabRestoreService* tab_restore_service =
 478       TabRestoreServiceFactory::GetForProfile(profile());
 479   if (tab_restore_service)
 480     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 481
 482 #if !defined(OS_MACOSX)
 483   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 484     // We're the last browser window with this profile. We need to nuke the
 485     // TabRestoreService, which will start the shutdown of the
 486     // NavigationControllers and allow for proper shutdown. If we don't do this
 487     // chrome won't shutdown cleanly, and may end up crashing when some
 488     // thread tries to use the IO thread (or another thread) that is no longer
 489     // valid.
 490     // This isn't a valid assumption for Mac OS, as it stays running after
 491     // the last browser has closed. The Mac equivalent is in its app
 492     // controller.
 493     TabRestoreServiceFactory::ResetForProfile(profile_);
 494   }
 495 #endif
 496
 497   profile_pref_registrar_.RemoveAll();
 498
 499   encoding_auto_detect_.Destroy();
 500
 501   // Destroy BrowserExtensionWindowController before the incognito profile
 502   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 503   extension_window_controller_.reset();
 504
 505   // Destroy BrowserInstantController before the incongnito profile is destroyed
 506   // because the InstantController destructor depends on this profile.
 507   instant_controller_.reset();
 508
 509   if (profile_->IsOffTheRecord() &&
 510       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 511     // An incognito profile is no longer needed, this indirectly frees
 512     // its cache and cookies once it gets destroyed at the appropriate time.
 513     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 514   }
 515
 516   // There may be pending file dialogs, we need to tell them that we've gone
 517   // away so they don't try and call back to us.
 518   if (select_file_dialog_.get())
 519     select_file_dialog_->ListenerDestroyed();
 520
 521   int num_downloads;
 522   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 523           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 524       !browser_defaults::kBrowserAliveWithNoWindows) {
 525     DownloadService::CancelAllDownloads();
 526   }
 527 }
 528
 529 ///////////////////////////////////////////////////////////////////////////////
 530 // Getters & Setters
 531
 532 FindBarController* Browser::GetFindBarController() {
 533   if (!find_bar_controller_.get()) {
 534     FindBar* find_bar = window_->CreateFindBar();
 535     find_bar_controller_.reset(new FindBarController(find_bar));
 536     find_bar->SetFindBarController(find_bar_controller_.get());
 537     find_bar_controller_->ChangeWebContents(
 538         tab_strip_model_->GetActiveWebContents());
 539     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 540   }
 541   return find_bar_controller_.get();
 542 }
 543
 544 bool Browser::HasFindBarController() const {
 545   return find_bar_controller_.get() != NULL;
 546 }
 547
 548 bool Browser::is_app() const {
 549   return !app_name_.empty();
 550 }
 551
 552 bool Browser::is_devtools() const {
 553   return app_name_ == DevToolsWindow::kDevToolsApp;
 554 }
 555
 556 ///////////////////////////////////////////////////////////////////////////////
 557 // Browser, State Storage and Retrieval for UI:
 558
 559 gfx::Image Browser::GetCurrentPageIcon() const {
 560   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 561   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 562   // window during the window's creation (before tabs have been added).
 563   FaviconTabHelper* favicon_tab_helper =
 564       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 565   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 566 }
 567
 568 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 569   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 570   base::string16 title;
 571
 572   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 573   // window during the window's creation (before tabs have been added).
 574   if (contents) {
 575     // Streamlined hosted apps use the host instead of the title.
 576     if (is_app() && extensions::util::IsStreamlinedHostedAppsEnabled())
 577       return base::UTF8ToUTF16(contents->GetURL().host());
 578
 579     title = contents->GetTitle();
 580     FormatTitleForDisplay(&title);
 581   }
 582   if (title.empty())
 583     title = CoreTabHelper::GetDefaultTitle();
 584
 585 #if defined(OS_MACOSX)
 586   // On Mac, we don't want to suffix the page title with
 587   // the application name.
 588   return title;
 589 #elif defined(USE_ASH)
 590   // On Ash, we don't want to suffix the page title with the application name,
 591   // but on Windows, where USE_ASH can also be true, we still want the prefix
 592   // on desktop.
 593   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 594     return title;
 595 #endif
 596   // Don't append the app name to window titles on app frames and app popups
 597   return is_app() ?
 598       title :
 599       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 600 }
 601
 602 // static
 603 void Browser::FormatTitleForDisplay(base::string16* title) {
 604   size_t current_index = 0;
 605   size_t match_index;
 606   while ((match_index = title->find(L'\n', current_index)) !=
 607          base::string16::npos) {
 608     title->replace(match_index, 1, base::string16());
 609     current_index = match_index;
 610   }
 611 }
 612
 613 ///////////////////////////////////////////////////////////////////////////////
 614 // Browser, OnBeforeUnload handling:
 615
 616 bool Browser::ShouldCloseWindow() {
 617   if (!CanCloseWithInProgressDownloads())
 618     return false;
 619
 620   if (IsFastTabUnloadEnabled())
 621     return fast_unload_controller_->ShouldCloseWindow();
 622   return unload_controller_->ShouldCloseWindow();
 623 }
 624
 625 bool Browser::CallBeforeUnloadHandlers(
 626     const base::Callback<void(bool)>& on_close_confirmed) {
 627   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 628   if (IsFastTabUnloadEnabled()) {
 629     return fast_unload_controller_->CallBeforeUnloadHandlers(
 630         on_close_confirmed);
 631   }
 632   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 633 }
 634
 635 void Browser::ResetBeforeUnloadHandlers() {
 636   cancel_download_confirmation_state_ = NOT_PROMPTED;
 637   if (IsFastTabUnloadEnabled())
 638     fast_unload_controller_->ResetBeforeUnloadHandlers();
 639   else
 640     unload_controller_->ResetBeforeUnloadHandlers();
 641 }
 642
 643 bool Browser::HasCompletedUnloadProcessing() const {
 644   DCHECK(IsFastTabUnloadEnabled());
 645   return fast_unload_controller_->HasCompletedUnloadProcessing();
 646 }
 647
 648 bool Browser::IsAttemptingToCloseBrowser() const {
 649   if (IsFastTabUnloadEnabled())
 650     return fast_unload_controller_->is_attempting_to_close_browser();
 651   return unload_controller_->is_attempting_to_close_browser();
 652 }
 653
 654 void Browser::OnWindowClosing() {
 655   if (!ShouldCloseWindow())
 656     return;
 657
 658   // Application should shutdown on last window close if the user is explicitly
 659   // trying to quit, or if there is nothing keeping the browser alive (such as
 660   // AppController on the Mac, or BackgroundContentsService for background
 661   // pages).
 662   bool should_quit_if_last_browser =
 663       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 664
 665   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 666     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 667
 668   // Don't use GetForProfileIfExisting here, we want to force creation of the
 669   // session service so that user can restore what was open.
 670   SessionService* session_service =
 671       SessionServiceFactory::GetForProfile(profile());
 672   if (session_service)
 673     session_service->WindowClosing(session_id());
 674
 675   TabRestoreService* tab_restore_service =
 676       TabRestoreServiceFactory::GetForProfile(profile());
 677
 678 #if defined(USE_AURA)
 679   if (tab_restore_service && is_app() && !is_devtools())
 680     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 681 #endif
 682
 683   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 684     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 685
 686   // TODO(sky): convert session/tab restore to use notification.
 687   content::NotificationService::current()->Notify(
 688       chrome::NOTIFICATION_BROWSER_CLOSING,
 689       content::Source<Browser>(this),
 690       content::NotificationService::NoDetails());
 691
 692   if (!IsFastTabUnloadEnabled())
 693     tab_strip_model_->CloseAllTabs();
 694 }
 695
 696 ////////////////////////////////////////////////////////////////////////////////
 697 // In-progress download termination handling:
 698
 699 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 700   if (cancel_downloads) {
 701     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 702     chrome::CloseWindow(this);
 703     return;
 704   }
 705
 706   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 707   // close again we'll show the warning again.
 708   cancel_download_confirmation_state_ = NOT_PROMPTED;
 709
 710   // Show the download page so the user can figure-out what downloads are still
 711   // in-progress.
 712   chrome::ShowDownloads(this);
 713
 714   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 715   // prompt every time any tab is closed. http://crbug.com/305516
 716   if (IsFastTabUnloadEnabled())
 717     fast_unload_controller_->CancelWindowClose();
 718   else
 719     unload_controller_->CancelWindowClose();
 720 }
 721
 722 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 723     int* num_downloads_blocking) const {
 724   DCHECK(num_downloads_blocking);
 725   *num_downloads_blocking = 0;
 726
 727   // If we're not running a full browser process with a profile manager
 728   // (testing), it's ok to close the browser.
 729   if (!g_browser_process->profile_manager())
 730     return DOWNLOAD_CLOSE_OK;
 731
 732   int total_download_count =
 733       DownloadService::NonMaliciousDownloadCountAllProfiles();
 734   if (total_download_count == 0)
 735     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 736
 737   // Figure out how many windows are open total, and associated with this
 738   // profile, that are relevant for the ok-to-close decision.
 739   int profile_window_count = 0;
 740   int total_window_count = 0;
 741   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 742     // Don't count this browser window or any other in the process of closing.
 743     Browser* const browser = *it;
 744     // Window closing may be delayed, and windows that are in the process of
 745     // closing don't count against our totals.
 746     if (browser == this || browser->IsAttemptingToCloseBrowser())
 747       continue;
 748
 749     if (it->profile() == profile())
 750       profile_window_count++;
 751     total_window_count++;
 752   }
 753
 754   // If there aren't any other windows, we're at browser shutdown,
 755   // which would cancel all current downloads.
 756   if (total_window_count == 0) {
 757     *num_downloads_blocking = total_download_count;
 758     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 759   }
 760
 761   // If there aren't any other windows on our profile, and we're an incognito
 762   // profile, and there are downloads associated with that profile,
 763   // those downloads would be cancelled by our window (-> profile) close.
 764   DownloadService* download_service =
 765       DownloadServiceFactory::GetForBrowserContext(profile());
 766   if ((profile_window_count == 0) &&
 767       (download_service->NonMaliciousDownloadCount() > 0) &&
 768       profile()->IsOffTheRecord()) {
 769     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 770     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 771   }
 772
 773   // Those are the only conditions under which we will block shutdown.
 774   return DOWNLOAD_CLOSE_OK;
 775 }
 776
 777 ////////////////////////////////////////////////////////////////////////////////
 778 // Browser, Tab adding/showing functions:
 779
 780 void Browser::WindowFullscreenStateChanged() {
 781   fullscreen_controller_->WindowFullscreenStateChanged();
 782   command_controller_->FullscreenStateChanged();
 783   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 784 }
 785
 786 ///////////////////////////////////////////////////////////////////////////////
 787 // Browser, Assorted browser commands:
 788
 789 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 790   fullscreen_controller_->
 791       ToggleBrowserFullscreenModeWithExtension(extension_url);
 792 }
 793
 794 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 795   return SupportsWindowFeatureImpl(feature, true);
 796 }
 797
 798 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 799   return SupportsWindowFeatureImpl(feature, false);
 800 }
 801
 802 void Browser::ToggleEncodingAutoDetect() {
 803   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 804   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 805   // If "auto detect" is turned on, then any current override encoding
 806   // is cleared. This also implicitly performs a reload.
 807   // OTOH, if "auto detect" is turned off, we don't change the currently
 808   // active encoding.
 809   if (encoding_auto_detect_.GetValue()) {
 810     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 811     if (contents)
 812       contents->ResetOverrideEncoding();
 813   }
 814 }
 815
 816 void Browser::OverrideEncoding(int encoding_id) {
 817   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 818   const std::string selected_encoding =
 819       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 820   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 821   if (!selected_encoding.empty() && contents)
 822      contents->SetOverrideEncoding(selected_encoding);
 823   // Update the list of recently selected encodings.
 824   std::string new_selected_encoding_list;
 825   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 826         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 827         encoding_id,
 828         &new_selected_encoding_list)) {
 829     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 830                                     new_selected_encoding_list);
 831   }
 832 }
 833
 834 void Browser::OpenFile() {
 835   content::RecordAction(UserMetricsAction("OpenFile"));
 836   select_file_dialog_ = ui::SelectFileDialog::Create(
 837       this, new ChromeSelectFilePolicy(
 838           tab_strip_model_->GetActiveWebContents()));
 839
 840   const base::FilePath directory = profile_->last_selected_directory();
 841
 842   // TODO(beng): figure out how to juggle this.
 843   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 844   ui::SelectFileDialog::FileTypeInfo file_types;
 845   file_types.support_drive = true;
 846   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 847                                   base::string16(),
 848                                   directory,
 849                                   &file_types,
 850                                   0,
 851                                   base::FilePath::StringType(),
 852                                   parent_window,
 853                                   NULL);
 854 }
 855
 856 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 857   if (GetStatusBubble())
 858     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 859 }
 860
 861 ///////////////////////////////////////////////////////////////////////////////
 862
 863 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 864                                          content::PageTransition transition,
 865                                          bool user_initiated) {
 866   tab_strip_model_->TabNavigating(contents, transition);
 867
 868   bool contents_is_selected =
 869       contents == tab_strip_model_->GetActiveWebContents();
 870   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 871     // Forcibly reset the location bar if the url is going to change in the
 872     // current tab, since otherwise it won't discard any ongoing user edits,
 873     // since it doesn't realize this is a user-initiated action.
 874     window()->GetLocationBar()->Revert();
 875   }
 876
 877   if (GetStatusBubble())
 878     GetStatusBubble()->Hide();
 879
 880   // Update the location bar. This is synchronous. We specifically don't
 881   // update the load state since the load hasn't started yet and updating it
 882   // will put it out of sync with the actual state like whether we're
 883   // displaying a favicon, which controls the throbber. If we updated it here,
 884   // the throbber will show the default favicon for a split second when
 885   // navigating away from the new tab page.
 886   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 887
 888   if (contents_is_selected)
 889     contents->SetInitialFocus();
 890 }
 891
 892 ///////////////////////////////////////////////////////////////////////////////
 893 // Browser, PageNavigator implementation:
 894
 895 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 896   return OpenURLFromTab(NULL, params);
 897 }
 898
 899 ///////////////////////////////////////////////////////////////////////////////
 900 // Browser, TabStripModelObserver implementation:
 901
 902 void Browser::TabInsertedAt(WebContents* contents,
 903                             int index,
 904                             bool foreground) {
 905   SetAsDelegate(contents, true);
 906
 907   if (popup_manager_)
 908     popup_manager_->RegisterWith(contents);
 909
 910   SessionTabHelper* session_tab_helper =
 911       SessionTabHelper::FromWebContents(contents);
 912   session_tab_helper->SetWindowID(session_id());
 913
 914   content::NotificationService::current()->Notify(
 915       chrome::NOTIFICATION_TAB_PARENTED,
 916       content::Source<content::WebContents>(contents),
 917       content::NotificationService::NoDetails());
 918
 919   SyncHistoryWithTabs(index);
 920
 921   // Make sure the loading state is updated correctly, otherwise the throbber
 922   // won't start if the page is loading.
 923   LoadingStateChanged(contents, true);
 924
 925   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 926
 927   SessionService* session_service =
 928       SessionServiceFactory::GetForProfile(profile_);
 929   if (session_service) {
 930     session_service->TabInserted(contents);
 931     int new_active_index = tab_strip_model_->active_index();
 932     if (index < new_active_index)
 933       session_service->SetSelectedTabInWindow(session_id(),
 934                                               new_active_index);
 935   }
 936 }
 937
 938 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 939                            WebContents* contents,
 940                            int index) {
 941   fullscreen_controller_->OnTabClosing(contents);
 942   SessionService* session_service =
 943       SessionServiceFactory::GetForProfile(profile_);
 944   if (session_service)
 945     session_service->TabClosing(contents);
 946   content::NotificationService::current()->Notify(
 947       chrome::NOTIFICATION_TAB_CLOSING,
 948       content::Source<NavigationController>(&contents->GetController()),
 949       content::NotificationService::NoDetails());
 950
 951   if (popup_manager_)
 952     popup_manager_->UnregisterWith(contents);
 953
 954   // Sever the WebContents' connection back to us.
 955   SetAsDelegate(contents, false);
 956 }
 957
 958 void Browser::TabDetachedAt(WebContents* contents, int index) {
 959   // TabDetachedAt is called before TabStripModel has updated the
 960   // active index.
 961   int old_active_index = tab_strip_model_->active_index();
 962   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 963     SessionService* session_service =
 964         SessionServiceFactory::GetForProfileIfExisting(profile_);
 965     if (session_service)
 966       session_service->SetSelectedTabInWindow(session_id(),
 967                                               old_active_index - 1);
 968   }
 969
 970   if (popup_manager_)
 971     popup_manager_->UnregisterWith(contents);
 972
 973   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 974 }
 975
 976 void Browser::TabDeactivated(WebContents* contents) {
 977   fullscreen_controller_->OnTabDeactivated(contents);
 978   search_delegate_->OnTabDeactivated(contents);
 979   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 980
 981   // Save what the user's currently typing, so it can be restored when we
 982   // switch back to this tab.
 983   window_->GetLocationBar()->SaveStateToContents(contents);
 984
 985   if (instant_controller_)
 986     instant_controller_->TabDeactivated(contents);
 987 }
 988
 989 void Browser::ActiveTabChanged(WebContents* old_contents,
 990                                WebContents* new_contents,
 991                                int index,
 992                                int reason) {
 993   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 994
 995   // Update the bookmark state, since the BrowserWindow may query it during
 996   // OnActiveTabChanged() below.
 997   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
 998
 999   // Let the BrowserWindow do its handling.  On e.g. views this changes the
1000   // focused object, which should happen before we update the toolbar below,
1001   // since the omnibox expects the correct element to already be focused when it
1002   // is updated.
1003   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1004
1005   fullscreen_controller_->OnTabDetachedFromView(old_contents);
1006
1007   // Discarded tabs always get reloaded.
1008   if (tab_strip_model_->IsTabDiscarded(index)) {
1009     LOG(WARNING) << "Reloading discarded tab at " << index;
1010     static int reload_count = 0;
1011     UMA_HISTOGRAM_CUSTOM_COUNTS(
1012         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1013     chrome::Reload(this, CURRENT_TAB);
1014   }
1015
1016   // If we have any update pending, do it now.
1017   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1018     ProcessPendingUIUpdates();
1019
1020   // Propagate the profile to the location bar.
1021   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1022
1023   if (chrome::IsInstantExtendedAPIEnabled())
1024     search_delegate_->OnTabActivated(new_contents);
1025
1026   // Update reload/stop state.
1027   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1028
1029   // Update commands to reflect current state.
1030   command_controller_->TabStateChanged();
1031
1032   // Reset the status bubble.
1033   StatusBubble* status_bubble = GetStatusBubble();
1034   if (status_bubble) {
1035     status_bubble->Hide();
1036
1037     // Show the loading state (if any).
1038     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1039         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1040   }
1041
1042   if (HasFindBarController()) {
1043     find_bar_controller_->ChangeWebContents(new_contents);
1044     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1045   }
1046
1047   // Update sessions. Don't force creation of sessions. If sessions doesn't
1048   // exist, the change will be picked up by sessions when created.
1049   SessionService* session_service =
1050       SessionServiceFactory::GetForProfileIfExisting(profile_);
1051   if (session_service && !tab_strip_model_->closing_all()) {
1052     session_service->SetSelectedTabInWindow(session_id(),
1053                                             tab_strip_model_->active_index());
1054   }
1055
1056   // This needs to be called after notifying SearchDelegate.
1057   if (instant_controller_)
1058     instant_controller_->ActiveTabChanged();
1059
1060   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1061   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1062 }
1063
1064 void Browser::TabMoved(WebContents* contents,
1065                        int from_index,
1066                        int to_index) {
1067   DCHECK(from_index >= 0 && to_index >= 0);
1068   // Notify the history service.
1069   SyncHistoryWithTabs(std::min(from_index, to_index));
1070 }
1071
1072 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1073                             WebContents* old_contents,
1074                             WebContents* new_contents,
1075                             int index) {
1076   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1077   fullscreen_controller_->OnTabClosing(old_contents);
1078   SessionService* session_service =
1079       SessionServiceFactory::GetForProfile(profile_);
1080   if (session_service)
1081     session_service->TabClosing(old_contents);
1082   TabInsertedAt(new_contents,
1083                 index,
1084                 (index == tab_strip_model_->active_index()));
1085
1086   int entry_count = new_contents->GetController().GetEntryCount();
1087   if (entry_count > 0) {
1088     // Send out notification so that observers are updated appropriately.
1089     new_contents->GetController().NotifyEntryChanged(
1090         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1091         entry_count - 1);
1092   }
1093
1094   if (session_service) {
1095     // The new_contents may end up with a different navigation stack. Force
1096     // the session service to update itself.
1097     session_service->TabRestored(new_contents,
1098                                  tab_strip_model_->IsTabPinned(index));
1099   }
1100 }
1101
1102 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1103   SessionService* session_service =
1104       SessionServiceFactory::GetForProfileIfExisting(profile());
1105   if (session_service) {
1106     SessionTabHelper* session_tab_helper =
1107         SessionTabHelper::FromWebContents(contents);
1108     session_service->SetPinnedState(session_id(),
1109                                     session_tab_helper->session_id(),
1110                                     tab_strip_model_->IsTabPinned(index));
1111   }
1112 }
1113
1114 void Browser::TabStripEmpty() {
1115   // Close the frame after we return to the message loop (not immediately,
1116   // otherwise it will destroy this object before the stack has a chance to
1117   // cleanly unwind.)
1118   // Note: This will be called several times if TabStripEmpty is called several
1119   //       times. This is because it does not close the window if tabs are
1120   //       still present.
1121   base::MessageLoop::current()->PostTask(
1122       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1123
1124   // Instant may have visible WebContents that need to be detached before the
1125   // window system closes.
1126   instant_controller_.reset();
1127 }
1128
1129 bool Browser::CanOverscrollContent() const {
1130 #if defined(USE_AURA)
1131   const std::string value = CommandLine::ForCurrentProcess()->
1132       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
1133   bool overscroll_enabled = value != "0";
1134   if (!overscroll_enabled)
1135     return false;
1136   if (is_app() || is_devtools() || !is_type_tabbed())
1137     return false;
1138
1139   // The detached bookmark bar has appearance of floating above the
1140   // web-contents. This does not play nicely with overscroll navigation
1141   // gestures. So disable overscroll navigation when the bookmark bar is in the
1142   // detached state and the overscroll effect moves the layers.
1143   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1144     return false;
1145   return true;
1146 #else
1147   return false;
1148 #endif
1149 }
1150
1151 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1152   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1153   // other pages have committed.
1154   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1155   if (!profile || !source->GetController().GetLastCommittedEntry())
1156     return false;
1157   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1158   return chrome::IsNTPURL(committed_url, profile);
1159 }
1160
1161 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1162                                      const NativeWebKeyboardEvent& event,
1163                                      bool* is_keyboard_shortcut) {
1164   // Escape exits tabbed fullscreen mode.
1165   // TODO(koz): Write a test for this http://crbug.com/100441.
1166   if (event.windowsKeyCode == 27 &&
1167       fullscreen_controller_->HandleUserPressedEscape()) {
1168     return true;
1169   }
1170   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1171 }
1172
1173 void Browser::HandleKeyboardEvent(content::WebContents* source,
1174                                   const NativeWebKeyboardEvent& event) {
1175   DevToolsWindow* devtools_window =
1176       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1177   bool handled = false;
1178   if (devtools_window)
1179     handled = devtools_window->ForwardKeyboardEvent(event);
1180
1181   if (!handled)
1182     window()->HandleKeyboardEvent(event);
1183 }
1184
1185 bool Browser::TabsNeedBeforeUnloadFired() {
1186   if (IsFastTabUnloadEnabled())
1187     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1188   return unload_controller_->TabsNeedBeforeUnloadFired();
1189 }
1190
1191 void Browser::OverscrollUpdate(int delta_y) {
1192   window_->OverscrollUpdate(delta_y);
1193 }
1194
1195 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1196                                     const gfx::Rect& anchor_in_root_view,
1197                                     const base::string16& main_text,
1198                                     const base::string16& sub_text) {
1199   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1200   if (rwhv) {
1201     validation_message_bubble_ =
1202         chrome::ValidationMessageBubble::CreateAndShow(
1203             rwhv->GetRenderWidgetHost(),
1204             anchor_in_root_view,
1205             main_text,
1206             sub_text);
1207   }
1208 }
1209
1210 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1211   validation_message_bubble_.reset();
1212 }
1213
1214 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1215                                     const gfx::Rect& anchor_in_root_view) {
1216   if (!validation_message_bubble_)
1217     return;
1218   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1219   if (rwhv) {
1220     validation_message_bubble_->SetPositionRelativeToAnchor(
1221         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1222   }
1223 }
1224
1225 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1226                                     const blink::WebGestureEvent& event) {
1227   // Disable pinch zooming in undocked dev tools window due to poor UX.
1228   if (app_name() == DevToolsWindow::kDevToolsApp)
1229     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1230            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1231            event.type == blink::WebGestureEvent::GesturePinchEnd;
1232
1233   return false;
1234 }
1235
1236 bool Browser::CanDragEnter(content::WebContents* source,
1237                            const content::DropData& data,
1238                            blink::WebDragOperationsMask operations_allowed) {
1239   // Disallow drag-and-drop navigation for Settings windows which do not support
1240   // external navigation.
1241   if ((operations_allowed & blink::WebDragOperationLink) &&
1242       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1243     return false;
1244   }
1245   return true;
1246 }
1247
1248 bool Browser::IsMouseLocked() const {
1249   return fullscreen_controller_->IsMouseLocked();
1250 }
1251
1252 void Browser::OnWindowDidShow() {
1253   if (window_has_shown_)
1254     return;
1255   window_has_shown_ = true;
1256
1257 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1258 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1259   // Measure the latency from startup till the first browser window becomes
1260   // visible.
1261   static bool is_first_browser_window = true;
1262   if (is_first_browser_window &&
1263       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1264     is_first_browser_window = false;
1265     const base::Time process_creation_time =
1266         base::CurrentProcessInfo::CreationTime();
1267
1268     if (!process_creation_time.is_null()) {
1269       UMA_HISTOGRAM_LONG_TIMES(
1270           "Startup.BrowserWindowDisplay",
1271           base::Time::Now() - process_creation_time);
1272     }
1273   }
1274 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1275
1276   // Nothing to do for non-tabbed windows.
1277   if (!is_type_tabbed())
1278     return;
1279
1280   // Show any pending global error bubble.
1281   GlobalErrorService* service =
1282       GlobalErrorServiceFactory::GetForProfile(profile());
1283   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1284   if (error)
1285     error->ShowBubbleView(this);
1286 }
1287
1288 void Browser::ShowFirstRunBubble() {
1289   window()->GetLocationBar()->ShowFirstRunBubble();
1290 }
1291
1292 void Browser::ShowDownload(content::DownloadItem* download) {
1293   if (!window())
1294     return;
1295
1296   // If the download occurs in a new tab, and it's not a save page
1297   // download (started before initial navigation completed) close it.
1298   WebContents* source = download->GetWebContents();
1299   if (source && source->GetController().IsInitialNavigation() &&
1300       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1301     CloseContents(source);
1302   }
1303
1304   // Some (app downloads) are not supposed to appear on the shelf.
1305   if (!DownloadItemModel(download).ShouldShowInShelf())
1306     return;
1307
1308   // GetDownloadShelf creates the download shelf if it was not yet created.
1309   DownloadShelf* shelf = window()->GetDownloadShelf();
1310   shelf->AddDownload(download);
1311 }
1312
1313 ///////////////////////////////////////////////////////////////////////////////
1314 // Browser, content::WebContentsDelegate implementation:
1315
1316 WebContents* Browser::OpenURLFromTab(WebContents* source,
1317                                      const OpenURLParams& params) {
1318   chrome::NavigateParams nav_params(this, params.url, params.transition);
1319   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1320   nav_params.source_contents = source;
1321   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1322   if (params.user_gesture)
1323     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1324   nav_params.user_gesture = params.user_gesture;
1325
1326   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1327   if (source)
1328     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1329
1330   if (popup_blocker_helper) {
1331     if ((params.disposition == NEW_POPUP ||
1332          params.disposition == NEW_FOREGROUND_TAB ||
1333          params.disposition == NEW_BACKGROUND_TAB ||
1334          params.disposition == NEW_WINDOW) &&
1335         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1336                                     switches::kDisablePopupBlocking)) {
1337       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1338                                                 WebWindowFeatures())) {
1339         return NULL;
1340       }
1341     }
1342   }
1343
1344   chrome::Navigate(&nav_params);
1345
1346   return nav_params.target_contents;
1347 }
1348
1349 void Browser::NavigationStateChanged(const WebContents* source,
1350                                      content::InvalidateTypes changed_flags) {
1351   // Only update the UI when something visible has changed.
1352   if (changed_flags)
1353     ScheduleUIUpdate(source, changed_flags);
1354
1355   // We can synchronously update commands since they will only change once per
1356   // navigation, so we don't have to worry about flickering. We do, however,
1357   // need to update the command state early on load to always present usable
1358   // actions in the face of slow-to-commit pages.
1359   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1360                        content::INVALIDATE_TYPE_LOAD))
1361     command_controller_->TabStateChanged();
1362 }
1363
1364 void Browser::VisibleSSLStateChanged(const WebContents* source) {
1365   // When the current tab's SSL state changes, we need to update the URL
1366   // bar to reflect the new state.
1367   DCHECK(source);
1368   if (tab_strip_model_->GetActiveWebContents() == source)
1369     UpdateToolbar(false);
1370 }
1371
1372 void Browser::AddNewContents(WebContents* source,
1373                              WebContents* new_contents,
1374                              WindowOpenDisposition disposition,
1375                              const gfx::Rect& initial_pos,
1376                              bool user_gesture,
1377                              bool* was_blocked) {
1378   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1379                          user_gesture, was_blocked);
1380 }
1381
1382 void Browser::ActivateContents(WebContents* contents) {
1383   tab_strip_model_->ActivateTabAt(
1384       tab_strip_model_->GetIndexOfWebContents(contents), false);
1385   window_->Activate();
1386 }
1387
1388 void Browser::DeactivateContents(WebContents* contents) {
1389   window_->Deactivate();
1390 }
1391
1392 void Browser::LoadingStateChanged(WebContents* source,
1393     bool to_different_document) {
1394   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1395   window_->UpdateTitleBar();
1396
1397   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1398   if (source == selected_contents) {
1399     bool is_loading = source->IsLoading() && to_different_document;
1400     command_controller_->LoadingStateChanged(is_loading, false);
1401     if (GetStatusBubble()) {
1402       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1403           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1404     }
1405   }
1406 }
1407
1408 void Browser::CloseContents(WebContents* source) {
1409   bool can_close_contents;
1410   if (IsFastTabUnloadEnabled())
1411     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1412   else
1413     can_close_contents = unload_controller_->CanCloseContents(source);
1414
1415   if (can_close_contents)
1416     chrome::CloseWebContents(this, source, true);
1417 }
1418
1419 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1420   if (!IsPopupOrPanel(source)) {
1421     NOTREACHED() << "moving invalid browser type";
1422     return;
1423   }
1424   window_->SetBounds(pos);
1425 }
1426
1427 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1428   return is_type_popup();
1429 }
1430
1431 void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1432                               const GURL& url) {
1433   if (!GetStatusBubble())
1434     return;
1435
1436   if (source == tab_strip_model_->GetActiveWebContents()) {
1437     PrefService* prefs = profile_->GetPrefs();
1438     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1439   }
1440 }
1441
1442 void Browser::ContentsMouseEvent(
1443     WebContents* source, const gfx::Point& location, bool motion) {
1444   if (!GetStatusBubble())
1445     return;
1446
1447   if (source == tab_strip_model_->GetActiveWebContents()) {
1448     GetStatusBubble()->MouseMoved(location, !motion);
1449     if (!motion)
1450       GetStatusBubble()->SetURL(GURL(), std::string());
1451   }
1452 }
1453
1454 void Browser::ContentsZoomChange(bool zoom_in) {
1455   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1456 }
1457
1458 void Browser::WebContentsFocused(WebContents* contents) {
1459   window_->WebContentsFocused(contents);
1460 }
1461
1462 bool Browser::TakeFocus(content::WebContents* source,
1463                         bool reverse) {
1464   content::NotificationService::current()->Notify(
1465       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1466       content::Source<Browser>(this),
1467       content::NotificationService::NoDetails());
1468   return false;
1469 }
1470
1471 gfx::Rect Browser::GetRootWindowResizerRect() const {
1472   return window_->GetRootWindowResizerRect();
1473 }
1474
1475 void Browser::BeforeUnloadFired(WebContents* web_contents,
1476                                 bool proceed,
1477                                 bool* proceed_to_fire_unload) {
1478   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1479         proceed, proceed_to_fire_unload))
1480     return;
1481
1482   if (IsFastTabUnloadEnabled()) {
1483     *proceed_to_fire_unload =
1484         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1485   } else {
1486     *proceed_to_fire_unload =
1487         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1488   }
1489 }
1490
1491 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1492   const content::NavigationEntry* entry =
1493       source->GetController().GetActiveEntry();
1494   if (entry) {
1495     GURL url = entry->GetURL();
1496     GURL virtual_url = entry->GetVirtualURL();
1497     if ((url.SchemeIs(content::kChromeUIScheme) &&
1498         url.host() == chrome::kChromeUINewTabHost) ||
1499         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1500         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1501       return true;
1502     }
1503   }
1504
1505   return chrome::NavEntryIsInstantNTP(source, entry);
1506 }
1507
1508 void Browser::SetFocusToLocationBar(bool select_all) {
1509   // Two differences between this and FocusLocationBar():
1510   // (1) This doesn't get recorded in user metrics, since it's called
1511   //     internally.
1512   // (2) This checks whether the location bar can be focused, and if not, clears
1513   //     the focus.  FocusLocationBar() is only reached when the location bar is
1514   //     focusable, but this may be reached at other times, e.g. while in
1515   //     fullscreen mode, where we need to leave focus in a consistent state.
1516   window_->SetFocusToLocationBar(select_all);
1517 }
1518
1519 int Browser::GetExtraRenderViewHeight() const {
1520   return window_->GetExtraRenderViewHeight();
1521 }
1522
1523 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1524   DCHECK(source);
1525   chrome::ViewSource(this, source);
1526 }
1527
1528 void Browser::ViewSourceForFrame(WebContents* source,
1529                                  const GURL& frame_url,
1530                                  const content::PageState& frame_page_state) {
1531   DCHECK(source);
1532   chrome::ViewSource(this, source, frame_url, frame_page_state);
1533 }
1534
1535 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1536   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1537                                 source);
1538 }
1539
1540 bool Browser::ShouldCreateWebContents(
1541     WebContents* web_contents,
1542     int route_id,
1543     WindowContainerType window_container_type,
1544     const base::string16& frame_name,
1545     const GURL& target_url,
1546     const std::string& partition_id,
1547     content::SessionStorageNamespace* session_storage_namespace) {
1548   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1549     // If a BackgroundContents is created, suppress the normal WebContents.
1550     return !MaybeCreateBackgroundContents(route_id,
1551                                           web_contents,
1552                                           frame_name,
1553                                           target_url,
1554                                           partition_id,
1555                                           session_storage_namespace);
1556   }
1557
1558   return true;
1559 }
1560
1561 void Browser::WebContentsCreated(WebContents* source_contents,
1562                                  int opener_render_frame_id,
1563                                  const base::string16& frame_name,
1564                                  const GURL& target_url,
1565                                  WebContents* new_contents) {
1566   // Adopt the WebContents now, so all observers are in place, as the network
1567   // requests for its initial navigation will start immediately. The WebContents
1568   // will later be inserted into this browser using Browser::Navigate via
1569   // AddNewContents.
1570   TabHelpers::AttachTabHelpers(new_contents);
1571
1572   // Notify.
1573   RetargetingDetails details;
1574   details.source_web_contents = source_contents;
1575   details.source_render_frame_id = opener_render_frame_id;
1576   details.target_url = target_url;
1577   details.target_web_contents = new_contents;
1578   details.not_yet_in_tabstrip = true;
1579   content::NotificationService::current()->Notify(
1580       chrome::NOTIFICATION_RETARGETING,
1581       content::Source<Profile>(profile_),
1582       content::Details<RetargetingDetails>(&details));
1583 }
1584
1585 void Browser::RendererUnresponsive(WebContents* source) {
1586   // Ignore hangs if a tab is blocked.
1587   int index = tab_strip_model_->GetIndexOfWebContents(source);
1588   DCHECK_NE(TabStripModel::kNoTab, index);
1589   if (tab_strip_model_->IsTabBlocked(index))
1590     return;
1591
1592   chrome::ShowHungRendererDialog(source);
1593 }
1594
1595 void Browser::RendererResponsive(WebContents* source) {
1596   chrome::HideHungRendererDialog(source);
1597 }
1598
1599 void Browser::WorkerCrashed(WebContents* source) {
1600   SimpleAlertInfoBarDelegate::Create(
1601       InfoBarService::FromWebContents(source),
1602       infobars::InfoBarDelegate::kNoIconID,
1603       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1604 }
1605
1606 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1607   if (web_contents == tab_strip_model_->GetActiveWebContents())
1608     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1609 }
1610
1611 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1612   if (web_contents == tab_strip_model_->GetActiveWebContents())
1613     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1614 }
1615
1616 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1617   return GetJavaScriptDialogManagerInstance();
1618 }
1619
1620 content::ColorChooser* Browser::OpenColorChooser(
1621       WebContents* web_contents,
1622       SkColor initial_color,
1623       const std::vector<content::ColorSuggestion>& suggestions) {
1624   return chrome::ShowColorChooser(web_contents, initial_color);
1625 }
1626
1627 void Browser::RunFileChooser(WebContents* web_contents,
1628                              const content::FileChooserParams& params) {
1629   FileSelectHelper::RunFileChooser(web_contents, params);
1630 }
1631
1632 void Browser::EnumerateDirectory(WebContents* web_contents,
1633                                  int request_id,
1634                                  const base::FilePath& path) {
1635   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1636 }
1637
1638 bool Browser::EmbedsFullscreenWidget() const {
1639   return true;
1640 }
1641
1642 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1643                                          bool enter_fullscreen) {
1644   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1645                                                      enter_fullscreen);
1646 }
1647
1648 bool Browser::IsFullscreenForTabOrPending(
1649     const WebContents* web_contents) const {
1650   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1651 }
1652
1653 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1654                                       const std::string& protocol,
1655                                       const GURL& url,
1656                                       bool user_gesture) {
1657   content::BrowserContext* context = web_contents->GetBrowserContext();
1658   if (context->IsOffTheRecord())
1659     return;
1660
1661   ProtocolHandler handler =
1662       ProtocolHandler::CreateProtocolHandler(protocol, url);
1663
1664   ProtocolHandlerRegistry* registry =
1665       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1666   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1667     return;
1668
1669   TabSpecificContentSettings* tab_content_settings =
1670       TabSpecificContentSettings::FromWebContents(web_contents);
1671   if (!user_gesture && window_) {
1672     tab_content_settings->set_pending_protocol_handler(handler);
1673     tab_content_settings->set_previous_protocol_handler(
1674         registry->GetHandlerFor(handler.protocol()));
1675     window_->GetLocationBar()->UpdateContentSettingsIcons();
1676     return;
1677   }
1678
1679   // Make sure content-setting icon is turned off in case the page does
1680   // ungestured and gestured RPH calls.
1681   if (window_) {
1682     tab_content_settings->ClearPendingProtocolHandler();
1683     window_->GetLocationBar()->UpdateContentSettingsIcons();
1684   }
1685
1686   PermissionBubbleManager* bubble_manager =
1687       PermissionBubbleManager::FromWebContents(web_contents);
1688   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1689     bubble_manager->AddRequest(
1690         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1691                                                      url, user_gesture));
1692   } else {
1693     RegisterProtocolHandlerInfoBarDelegate::Create(
1694         InfoBarService::FromWebContents(web_contents), registry, handler);
1695   }
1696 }
1697
1698 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1699                                         const std::string& protocol,
1700                                         const GURL& url,
1701                                         bool user_gesture) {
1702   // user_gesture will be used in case we decide to have confirmation bubble
1703   // for user while un-registering the handler.
1704   content::BrowserContext* context = web_contents->GetBrowserContext();
1705   if (context->IsOffTheRecord())
1706     return;
1707
1708   ProtocolHandler handler =
1709       ProtocolHandler::CreateProtocolHandler(protocol, url);
1710
1711   ProtocolHandlerRegistry* registry =
1712       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1713   registry->RemoveHandler(handler);
1714 }
1715
1716 void Browser::UpdatePreferredSize(WebContents* source,
1717                                   const gfx::Size& pref_size) {
1718   window_->UpdatePreferredSize(source, pref_size);
1719 }
1720
1721 void Browser::ResizeDueToAutoResize(WebContents* source,
1722                                     const gfx::Size& new_size) {
1723   window_->ResizeDueToAutoResize(source, new_size);
1724 }
1725
1726 void Browser::FindReply(WebContents* web_contents,
1727                         int request_id,
1728                         int number_of_matches,
1729                         const gfx::Rect& selection_rect,
1730                         int active_match_ordinal,
1731                         bool final_update) {
1732   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1733   if (!find_tab_helper)
1734     return;
1735
1736   find_tab_helper->HandleFindReply(request_id,
1737                                    number_of_matches,
1738                                    selection_rect,
1739                                    active_match_ordinal,
1740                                    final_update);
1741 }
1742
1743 void Browser::RequestToLockMouse(WebContents* web_contents,
1744                                  bool user_gesture,
1745                                  bool last_unlocked_by_target) {
1746   fullscreen_controller_->RequestToLockMouse(web_contents,
1747                                              user_gesture,
1748                                              last_unlocked_by_target);
1749 }
1750
1751 void Browser::LostMouseLock() {
1752   fullscreen_controller_->LostMouseLock();
1753 }
1754
1755 void Browser::RequestMediaAccessPermission(
1756     content::WebContents* web_contents,
1757     const content::MediaStreamRequest& request,
1758     const content::MediaResponseCallback& callback) {
1759   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1760 }
1761
1762 bool Browser::RequestPpapiBrokerPermission(
1763     WebContents* web_contents,
1764     const GURL& url,
1765     const base::FilePath& plugin_path,
1766     const base::Callback<void(bool)>& callback) {
1767   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1768   return true;
1769 }
1770
1771 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1772   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1773   // would disappear on non-NTP pages, resulting in a bigger size for the new
1774   // render view.
1775   gfx::Size size = web_contents->GetContainerBounds().size();
1776   // Don't change render view size if bookmark bar is currently not detached,
1777   // or there's no pending entry, or navigating to a NTP page.
1778   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1779     return size;
1780   const NavigationEntry* pending_entry =
1781       web_contents->GetController().GetPendingEntry();
1782   if (pending_entry &&
1783       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1784     size.Enlarge(
1785         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1786   }
1787   return size;
1788 }
1789
1790 ///////////////////////////////////////////////////////////////////////////////
1791 // Browser, CoreTabHelperDelegate implementation:
1792
1793 void Browser::SwapTabContents(content::WebContents* old_contents,
1794                               content::WebContents* new_contents,
1795                               bool did_start_load,
1796                               bool did_finish_load) {
1797   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1798   DCHECK_NE(TabStripModel::kNoTab, index);
1799   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1800 }
1801
1802 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1803   return chrome::CanReload(this);
1804 }
1805
1806 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1807   return chrome::CanSavePage(this);
1808 }
1809
1810 ///////////////////////////////////////////////////////////////////////////////
1811 // Browser, SearchEngineTabHelperDelegate implementation:
1812
1813 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1814                                        Profile* profile) {
1815   window()->ConfirmAddSearchProvider(template_url, profile);
1816 }
1817
1818 ///////////////////////////////////////////////////////////////////////////////
1819 // Browser, SearchTabHelperDelegate implementation:
1820
1821 void Browser::NavigateOnThumbnailClick(const GURL& url,
1822                                        WindowOpenDisposition disposition,
1823                                        content::WebContents* source_contents) {
1824   DCHECK(source_contents);
1825   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1826   // gets called to handle clicks in the new tab page (to navigate to most
1827   // visited item URLs) and in the search results page (to navigate to
1828   // privileged destinations (e.g. chrome://URLs)).
1829   //
1830   // TODO(kmadhusu): Page transitions to privileged destinations should be
1831   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1832   chrome::NavigateParams params(this, url,
1833                                 content::PAGE_TRANSITION_AUTO_BOOKMARK);
1834   params.referrer = content::Referrer();
1835   params.source_contents = source_contents;
1836   params.disposition = disposition;
1837   params.is_renderer_initiated = false;
1838   params.initiating_profile = profile_;
1839   chrome::Navigate(&params);
1840 }
1841
1842 void Browser::OnWebContentsInstantSupportDisabled(
1843     const content::WebContents* web_contents) {
1844   DCHECK(web_contents);
1845   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1846     UpdateToolbar(false);
1847 }
1848
1849 OmniboxView* Browser::GetOmniboxView() {
1850   return window_->GetLocationBar()->GetOmniboxView();
1851 }
1852
1853 std::set<std::string> Browser::GetOpenUrls() {
1854   history::TopSites* top_sites = profile_->GetTopSites();
1855   if (!top_sites)  // NULL for Incognito profiles.
1856     return std::set<std::string>();
1857
1858   std::set<std::string> open_urls;
1859   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1860   return open_urls;
1861 }
1862
1863 ///////////////////////////////////////////////////////////////////////////////
1864 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1865
1866 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1867                                     bool blocked) {
1868   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1869   if (index == TabStripModel::kNoTab) {
1870     NOTREACHED();
1871     return;
1872   }
1873   tab_strip_model_->SetTabBlocked(index, blocked);
1874   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1875     web_contents->Focus();
1876 }
1877
1878 web_modal::WebContentsModalDialogHost*
1879 Browser::GetWebContentsModalDialogHost() {
1880   return window_->GetWebContentsModalDialogHost();
1881 }
1882
1883 ///////////////////////////////////////////////////////////////////////////////
1884 // Browser, BookmarkTabHelperDelegate implementation:
1885
1886 void Browser::URLStarredChanged(content::WebContents* web_contents,
1887                                 bool starred) {
1888   if (web_contents == tab_strip_model_->GetActiveWebContents())
1889     window_->SetStarredState(starred);
1890 }
1891
1892 ///////////////////////////////////////////////////////////////////////////////
1893 // Browser, ZoomObserver implementation:
1894
1895 void Browser::OnZoomChanged(const ZoomController::ZoomChangedEventData& data) {
1896   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1897     // Only show the zoom bubble for zoom changes in the active window.
1898     window_->ZoomChangedForActiveTab(data.can_show_bubble &&
1899                                      window_->IsActive());
1900     // Change the zoom commands state based on the zoom state
1901     command_controller_->ZoomStateChanged();
1902   }
1903 }
1904
1905 ///////////////////////////////////////////////////////////////////////////////
1906 // Browser, ui::SelectFileDialog::Listener implementation:
1907
1908 void Browser::FileSelected(const base::FilePath& path, int index,
1909                            void* params) {
1910   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1911 }
1912
1913 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1914                                         int index,
1915                                         void* params) {
1916   profile_->set_last_selected_directory(file_info.file_path.DirName());
1917
1918   GURL url = net::FilePathToFileURL(file_info.local_path);
1919
1920 #if defined(OS_CHROMEOS)
1921   drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1922 #endif
1923
1924   if (url.is_empty())
1925     return;
1926
1927   OpenURL(OpenURLParams(
1928       url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1929 }
1930
1931 ///////////////////////////////////////////////////////////////////////////////
1932 // Browser, content::NotificationObserver implementation:
1933
1934 void Browser::Observe(int type,
1935                       const content::NotificationSource& source,
1936                       const content::NotificationDetails& details) {
1937   switch (type) {
1938     case extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
1939       chrome::UpdateCommandEnabled(
1940           this,
1941           IDC_BOOKMARK_PAGE,
1942           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1943       chrome::UpdateCommandEnabled(
1944           this,
1945           IDC_BOOKMARK_ALL_TABS,
1946           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1947
1948       if (window()->GetLocationBar())
1949         window()->GetLocationBar()->UpdatePageActions();
1950
1951       const extensions::UnloadedExtensionInfo* extension_info =
1952           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1953
1954       // Close any tabs from the unloaded extension, unless it's terminated,
1955       // in which case let the sad tabs remain.
1956       if (extension_info->reason !=
1957           extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1958         const Extension* extension = extension_info->extension;
1959         // Iterate backwards as we may remove items while iterating.
1960         for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1961           WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1962           // Two cases are handled here:
1963           // - The scheme check is for when an extension page is loaded in a
1964           //   tab, e.g. chrome-extension://id/page.html.
1965           // - The extension_app check is for apps, which can have non-extension
1966           //   schemes, e.g. https://mail.google.com if you have the Gmail app
1967           //   installed.
1968           if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1969                web_contents->GetURL().host() == extension->id()) ||
1970               (extensions::TabHelper::FromWebContents(
1971                    web_contents)->extension_app() == extension)) {
1972             tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1973           }
1974         }
1975       }
1976       break;
1977     }
1978
1979     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1980       Profile* profile = content::Source<Profile>(source).ptr();
1981       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1982         window()->GetLocationBar()->InvalidatePageActions();
1983       break;
1984     }
1985
1986     case extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED:
1987       chrome::UpdateCommandEnabled(
1988           this,
1989           IDC_BOOKMARK_PAGE,
1990           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1991       chrome::UpdateCommandEnabled(
1992           this,
1993           IDC_BOOKMARK_ALL_TABS,
1994           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1995     // fallthrough
1996     case extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED:
1997       // During window creation on Windows we may end up calling into
1998       // SHAppBarMessage, which internally spawns a nested message loop. This
1999       // makes it possible for us to end up here before window creation has
2000       // completed, at which point window_ is NULL. See 94752 for details.
2001       if (window() && window()->GetLocationBar())
2002         window()->GetLocationBar()->UpdatePageActions();
2003       break;
2004
2005 #if defined(ENABLE_THEMES)
2006     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
2007       window()->UserChangedTheme();
2008       break;
2009 #endif
2010
2011     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
2012       WebContents* web_contents = content::Source<WebContents>(source).ptr();
2013       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
2014         LocationBar* location_bar = window()->GetLocationBar();
2015         if (location_bar)
2016           location_bar->UpdateContentSettingsIcons();
2017       }
2018       break;
2019     }
2020
2021     default:
2022       NOTREACHED() << "Got a notification we didn't register for.";
2023   }
2024 }
2025
2026 ///////////////////////////////////////////////////////////////////////////////
2027 // Browser, Command and state updating (private):
2028
2029 void Browser::OnDevToolsDisabledChanged() {
2030   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2031     content::DevToolsAgentHost::DetachAllClients();
2032 }
2033
2034 ///////////////////////////////////////////////////////////////////////////////
2035 // Browser, UI update coalescing and handling (private):
2036
2037 void Browser::UpdateToolbar(bool should_restore_state) {
2038   window_->UpdateToolbar(should_restore_state ?
2039       tab_strip_model_->GetActiveWebContents() : NULL);
2040 }
2041
2042 void Browser::ScheduleUIUpdate(const WebContents* source,
2043                                unsigned changed_flags) {
2044   DCHECK(source);
2045   int index = tab_strip_model_->GetIndexOfWebContents(source);
2046   DCHECK_NE(TabStripModel::kNoTab, index);
2047
2048   // Do some synchronous updates.
2049   if (changed_flags & content::INVALIDATE_TYPE_URL &&
2050       source == tab_strip_model_->GetActiveWebContents()) {
2051     // Only update the URL for the current tab. Note that we do not update
2052     // the navigation commands since those would have already been updated
2053     // synchronously by NavigationStateChanged.
2054     UpdateToolbar(false);
2055     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2056   }
2057   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2058     // Update the loading state synchronously. This is so the throbber will
2059     // immediately start/stop, which gives a more snappy feel. We want to do
2060     // this for any tab so they start & stop quickly.
2061     tab_strip_model_->UpdateWebContentsStateAt(
2062         tab_strip_model_->GetIndexOfWebContents(source),
2063         TabStripModelObserver::LOADING_ONLY);
2064     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2065     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2066     // changed_flags.
2067   }
2068
2069   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2070     // To correctly calculate whether the title changed while not loading
2071     // we need to process the update synchronously. This state only matters for
2072     // the TabStripModel, so we notify the TabStripModel now and notify others
2073     // asynchronously.
2074     tab_strip_model_->UpdateWebContentsStateAt(
2075         tab_strip_model_->GetIndexOfWebContents(source),
2076         TabStripModelObserver::TITLE_NOT_LOADING);
2077   }
2078
2079   // If the only updates were synchronously handled above, we're done.
2080   if (changed_flags == 0)
2081     return;
2082
2083   // Save the dirty bits.
2084   scheduled_updates_[source] |= changed_flags;
2085
2086   if (!chrome_updater_factory_.HasWeakPtrs()) {
2087     // No task currently scheduled, start another.
2088     base::MessageLoop::current()->PostDelayedTask(
2089         FROM_HERE,
2090         base::Bind(&Browser::ProcessPendingUIUpdates,
2091                    chrome_updater_factory_.GetWeakPtr()),
2092         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2093   }
2094 }
2095
2096 void Browser::ProcessPendingUIUpdates() {
2097 #ifndef NDEBUG
2098   // Validate that all tabs we have pending updates for exist. This is scary
2099   // because the pending list must be kept in sync with any detached or
2100   // deleted tabs.
2101   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2102        i != scheduled_updates_.end(); ++i) {
2103     bool found = false;
2104     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2105       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2106         found = true;
2107         break;
2108       }
2109     }
2110     DCHECK(found);
2111   }
2112 #endif
2113
2114   chrome_updater_factory_.InvalidateWeakPtrs();
2115
2116   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2117        i != scheduled_updates_.end(); ++i) {
2118     // Do not dereference |contents|, it may be out-of-date!
2119     const WebContents* contents = i->first;
2120     unsigned flags = i->second;
2121
2122     if (contents == tab_strip_model_->GetActiveWebContents()) {
2123       // Updates that only matter when the tab is selected go here.
2124
2125       // Updating the URL happens synchronously in ScheduleUIUpdate.
2126       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2127         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2128             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2129       }
2130
2131       if (flags & (content::INVALIDATE_TYPE_TAB |
2132                    content::INVALIDATE_TYPE_TITLE)) {
2133         window_->UpdateTitleBar();
2134       }
2135     }
2136
2137     // Updates that don't depend upon the selected state go here.
2138     if (flags &
2139         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2140       tab_strip_model_->UpdateWebContentsStateAt(
2141           tab_strip_model_->GetIndexOfWebContents(contents),
2142           TabStripModelObserver::ALL);
2143     }
2144
2145     // Update the bookmark bar. It may happen that the tab is crashed, and if
2146     // so, the bookmark bar should be hidden.
2147     if (flags & content::INVALIDATE_TYPE_TAB)
2148       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2149
2150     // We don't need to process INVALIDATE_STATE, since that's not visible.
2151   }
2152
2153   scheduled_updates_.clear();
2154 }
2155
2156 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2157   if (!contents)
2158     return;
2159
2160   UpdateMap::iterator i = scheduled_updates_.find(contents);
2161   if (i != scheduled_updates_.end())
2162     scheduled_updates_.erase(i);
2163 }
2164
2165 ///////////////////////////////////////////////////////////////////////////////
2166 // Browser, Getters for UI (private):
2167
2168 StatusBubble* Browser::GetStatusBubble() {
2169   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2170   if (chrome::IsRunningInAppMode())
2171     return NULL;
2172
2173   return window_ ? window_->GetStatusBubble() : NULL;
2174 }
2175
2176 ///////////////////////////////////////////////////////////////////////////////
2177 // Browser, Session restore functions (private):
2178
2179 void Browser::SyncHistoryWithTabs(int index) {
2180   SessionService* session_service =
2181       SessionServiceFactory::GetForProfileIfExisting(profile());
2182   if (session_service) {
2183     for (int i = index; i < tab_strip_model_->count(); ++i) {
2184       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2185       if (web_contents) {
2186         SessionTabHelper* session_tab_helper =
2187             SessionTabHelper::FromWebContents(web_contents);
2188         session_service->SetTabIndexInWindow(
2189             session_id(), session_tab_helper->session_id(), i);
2190         session_service->SetPinnedState(
2191             session_id(),
2192             session_tab_helper->session_id(),
2193             tab_strip_model_->IsTabPinned(i));
2194       }
2195     }
2196   }
2197 }
2198
2199 ///////////////////////////////////////////////////////////////////////////////
2200 // Browser, In-progress download termination handling (private):
2201
2202 bool Browser::CanCloseWithInProgressDownloads() {
2203   // If we've prompted, we need to hear from the user before we
2204   // can close.
2205   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2206     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2207
2208   int num_downloads_blocking;
2209   Browser::DownloadClosePreventionType dialog_type =
2210       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2211   if (dialog_type == DOWNLOAD_CLOSE_OK)
2212     return true;
2213
2214   // Closing this window will kill some downloads; prompt to make sure
2215   // that's ok.
2216   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2217   window_->ConfirmBrowserCloseWithPendingDownloads(
2218       num_downloads_blocking,
2219       dialog_type,
2220       false,
2221       base::Bind(&Browser::InProgressDownloadResponse,
2222                  weak_factory_.GetWeakPtr()));
2223
2224   // Return false so the browser does not close.  We'll close if the user
2225   // confirms in the dialog.
2226   return false;
2227 }
2228
2229 ///////////////////////////////////////////////////////////////////////////////
2230 // Browser, Assorted utility functions (private):
2231
2232 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2233   Browser* delegate = set_delegate ? this : NULL;
2234   // WebContents...
2235   web_contents->SetDelegate(delegate);
2236
2237   // ...and all the helpers.
2238   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2239   WebContentsModalDialogManager::FromWebContents(web_contents)->
2240       SetDelegate(delegate);
2241   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2242   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2243   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2244   translate::ContentTranslateDriver& content_translate_driver =
2245       ChromeTranslateClient::FromWebContents(web_contents)->translate_driver();
2246   if (delegate) {
2247     ZoomController::FromWebContents(web_contents)->AddObserver(this);
2248     content_translate_driver.AddObserver(translate_driver_observer_.get());
2249   } else {
2250     ZoomController::FromWebContents(web_contents)->RemoveObserver(this);
2251     content_translate_driver.RemoveObserver(translate_driver_observer_.get());
2252   }
2253 }
2254
2255 void Browser::CloseFrame() {
2256   window_->Close();
2257 }
2258
2259 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2260                                 int index,
2261                                 DetachType type) {
2262   if (type == DETACH_TYPE_DETACH) {
2263     // Save the current location bar state, but only if the tab being detached
2264     // is the selected tab.  Because saving state can conditionally revert the
2265     // location bar, saving the current tab's location bar state to a
2266     // non-selected tab can corrupt both tabs.
2267     if (contents == tab_strip_model_->GetActiveWebContents()) {
2268       LocationBar* location_bar = window()->GetLocationBar();
2269       if (location_bar)
2270         location_bar->SaveStateToContents(contents);
2271     }
2272
2273     if (!tab_strip_model_->closing_all())
2274       SyncHistoryWithTabs(0);
2275   }
2276
2277   SetAsDelegate(contents, false);
2278   RemoveScheduledUpdatesFor(contents);
2279
2280   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2281     find_bar_controller_->ChangeWebContents(NULL);
2282   }
2283
2284   // Stop observing search model changes for this tab.
2285   search_delegate_->OnTabDetached(contents);
2286
2287   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2288     if (interstitial_observers_[i]->web_contents() != contents)
2289       continue;
2290
2291     delete interstitial_observers_[i];
2292     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2293     return;
2294   }
2295 }
2296
2297 bool Browser::ShouldShowLocationBar() const {
2298   // Tabbed browser always show a location bar.
2299   if (is_type_tabbed())
2300     return true;
2301
2302   if (is_app()) {
2303     if (extensions::util::IsStreamlinedHostedAppsEnabled() &&
2304         host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH) {
2305       // If streamlined hosted apps are enabled, show the location bar for
2306       // bookmark apps, except on ash which has the toolbar merged into the
2307       // frame.
2308       ExtensionService* service =
2309           extensions::ExtensionSystem::Get(profile_)->extension_service();
2310       const extensions::Extension* extension =
2311           service ? service->GetInstalledExtension(
2312                         web_app::GetExtensionIdFromApplicationName(app_name()))
2313                   : NULL;
2314       return (!extension || extension->from_bookmark()) &&
2315              app_name() != DevToolsWindow::kDevToolsApp;
2316     } else {
2317       return false;
2318     }
2319   }
2320
2321   // Trusted app windows and system windows never show a location bar.
2322   return !is_trusted_source();
2323 }
2324
2325 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2326                                         bool check_fullscreen) const {
2327   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2328
2329   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2330
2331   if (is_type_tabbed())
2332     features |= FEATURE_BOOKMARKBAR;
2333
2334   if (!hide_ui_for_fullscreen) {
2335     if (!is_type_tabbed())
2336       features |= FEATURE_TITLEBAR;
2337
2338     if (is_type_tabbed())
2339       features |= FEATURE_TABSTRIP;
2340
2341     if (is_type_tabbed())
2342       features |= FEATURE_TOOLBAR;
2343
2344     if (ShouldShowLocationBar())
2345       features |= FEATURE_LOCATIONBAR;
2346   }
2347   return !!(features & feature);
2348 }
2349
2350 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2351   BookmarkBar::State state;
2352   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2353   // mode, unless on the new tab page.
2354   if (profile_->IsGuestSession()) {
2355     state = BookmarkBar::HIDDEN;
2356   } else if (browser_defaults::bookmarks_enabled &&
2357       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2358       !ShouldHideUIForFullscreen()) {
2359     state = BookmarkBar::SHOW;
2360   } else {
2361     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2362     BookmarkTabHelper* bookmark_tab_helper =
2363         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2364     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2365       state = BookmarkBar::DETACHED;
2366     else
2367       state = BookmarkBar::HIDDEN;
2368   }
2369
2370   if (state == bookmark_bar_state_)
2371     return;
2372
2373   bookmark_bar_state_ = state;
2374
2375   if (!window_)
2376     return;  // This is called from the constructor when window_ is NULL.
2377
2378   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2379     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2380     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2381     // end up querying state once they process the tab switch.
2382     return;
2383   }
2384
2385   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2386   window_->BookmarkBarStateChanged(shouldAnimate ?
2387       BookmarkBar::ANIMATE_STATE_CHANGE :
2388       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2389 }
2390
2391 bool Browser::ShouldHideUIForFullscreen() const {
2392   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2393   // keep the controls in a slide-down panel.
2394   return window_ && window_->ShouldHideUIForFullscreen();
2395 }
2396
2397 bool Browser::MaybeCreateBackgroundContents(
2398     int route_id,
2399     WebContents* opener_web_contents,
2400     const base::string16& frame_name,
2401     const GURL& target_url,
2402     const std::string& partition_id,
2403     content::SessionStorageNamespace* session_storage_namespace) {
2404   GURL opener_url = opener_web_contents->GetURL();
2405   ExtensionService* extensions_service =
2406       extensions::ExtensionSystem::Get(profile_)->extension_service();
2407
2408   if (!opener_url.is_valid() ||
2409       frame_name.empty() ||
2410       !extensions_service ||
2411       !extensions_service->is_ready())
2412     return false;
2413
2414   // Only hosted apps have web extents, so this ensures that only hosted apps
2415   // can create BackgroundContents. We don't have to check for background
2416   // permission as that is checked in RenderMessageFilter when the CreateWindow
2417   // message is processed.
2418   const Extension* extension =
2419       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2420   if (!extension)
2421     return false;
2422
2423   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2424   BackgroundContentsService* service =
2425       BackgroundContentsServiceFactory::GetForProfile(profile_);
2426   if (!service)
2427     return false;
2428
2429   // Ensure that we're trying to open this from the extension's process.
2430   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2431   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2432   if (!opener_site_instance->GetProcess() ||
2433       !process_map->Contains(
2434           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2435     return false;
2436   }
2437
2438   // Only allow a single background contents per app.
2439   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2440   BackgroundContents* existing =
2441       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2442   if (existing) {
2443     // For non-scriptable background contents, ignore the request altogether,
2444     // (returning true, so that a regular WebContents isn't created either).
2445     if (!allow_js_access)
2446       return true;
2447     // For scriptable background pages, if one already exists, close it (even
2448     // if it was specified in the manifest).
2449     delete existing;
2450   }
2451
2452   // If script access is not allowed, create the the background contents in a
2453   // new SiteInstance, so that a separate process is used.
2454   scoped_refptr<content::SiteInstance> site_instance =
2455       allow_js_access ?
2456       opener_site_instance :
2457       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2458
2459   // Passed all the checks, so this should be created as a BackgroundContents.
2460   BackgroundContents* contents =
2461       service->CreateBackgroundContents(site_instance.get(),
2462                                         route_id,
2463                                         profile_,
2464                                         frame_name,
2465                                         base::ASCIIToUTF16(extension->id()),
2466                                         partition_id,
2467                                         session_storage_namespace);
2468
2469   // When a separate process is used, the original renderer cannot access the
2470   // new window later, thus we need to navigate the window now.
2471   if (contents && !allow_js_access) {
2472     contents->web_contents()->GetController().LoadURL(
2473         target_url,
2474         content::Referrer(),
2475         content::PAGE_TRANSITION_LINK,
2476         std::string());  // No extra headers.
2477   }
2478
2479   return contents != NULL;
2480 }