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 "grit/theme_resources.h"
 189 #include "net/base/filename_util.h"
 190 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 191 #include "net/cookies/cookie_monster.h"
 192 #include "net/url_request/url_request_context.h"
 193 #include "third_party/WebKit/public/web/WebWindowFeatures.h"
 194 #include "ui/base/l10n/l10n_util.h"
 195 #include "ui/base/window_open_disposition.h"
 196 #include "ui/gfx/point.h"
 197 #include "ui/shell_dialogs/selected_file_info.h"
 198
 199 #if defined(OS_WIN)
 200 #include "base/win/metro.h"
 201 #include "chrome/browser/ssl/ssl_error_info.h"
 202 #include "chrome/browser/task_manager/task_manager.h"
 203 #include "chrome/browser/ui/view_ids.h"
 204 #include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
 205 #include "ui/base/win/shell.h"
 206 #endif  // OS_WIN
 207
 208 #if defined(OS_CHROMEOS)
 209 #include "chrome/browser/chromeos/drive/file_system_util.h"
 210 #endif
 211
 212 #if defined(USE_ASH)
 213 #include "ash/ash_switches.h"
 214 #endif
 215
 216 using base::TimeDelta;
 217 using base::UserMetricsAction;
 218 using content::NativeWebKeyboardEvent;
 219 using content::NavigationController;
 220 using content::NavigationEntry;
 221 using content::OpenURLParams;
 222 using content::PluginService;
 223 using content::Referrer;
 224 using content::RenderWidgetHostView;
 225 using content::SiteInstance;
 226 using content::WebContents;
 227 using extensions::Extension;
 228 using ui::WebDialogDelegate;
 229 using web_modal::WebContentsModalDialogManager;
 230 using blink::WebWindowFeatures;
 231
 232 ///////////////////////////////////////////////////////////////////////////////
 233
 234 namespace {
 235
 236 // How long we wait before updating the browser chrome while loading a page.
 237 const int kUIUpdateCoalescingTimeMS = 200;
 238
 239 BrowserWindow* CreateBrowserWindow(Browser* browser) {
 240   return BrowserWindow::CreateBrowserWindow(browser);
 241 }
 242
 243 // Is the fast tab unload experiment enabled?
 244 bool IsFastTabUnloadEnabled() {
 245   return CommandLine::ForCurrentProcess()->HasSwitch(
 246         switches::kEnableFastUnload);
 247 }
 248
 249 }  // namespace
 250
 251 ////////////////////////////////////////////////////////////////////////////////
 252 // Browser, CreateParams:
 253
 254 Browser::CreateParams::CreateParams(Profile* profile,
 255                                     chrome::HostDesktopType host_desktop_type)
 256     : type(TYPE_TABBED),
 257       profile(profile),
 258       host_desktop_type(host_desktop_type),
 259       trusted_source(false),
 260       initial_show_state(ui::SHOW_STATE_DEFAULT),
 261       is_session_restore(false),
 262       window(NULL) {
 263 }
 264
 265 Browser::CreateParams::CreateParams(Type type,
 266                                     Profile* profile,
 267                                     chrome::HostDesktopType host_desktop_type)
 268     : type(type),
 269       profile(profile),
 270       host_desktop_type(host_desktop_type),
 271       trusted_source(false),
 272       initial_show_state(ui::SHOW_STATE_DEFAULT),
 273       is_session_restore(false),
 274       window(NULL) {
 275 }
 276
 277 // static
 278 Browser::CreateParams Browser::CreateParams::CreateForApp(
 279     const std::string& app_name,
 280     bool trusted_source,
 281     const gfx::Rect& window_bounds,
 282     Profile* profile,
 283     chrome::HostDesktopType host_desktop_type) {
 284   DCHECK(!app_name.empty());
 285
 286   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 287   params.app_name = app_name;
 288   params.trusted_source = trusted_source;
 289   params.initial_bounds = window_bounds;
 290
 291   return params;
 292 }
 293
 294 // static
 295 Browser::CreateParams Browser::CreateParams::CreateForDevTools(
 296     Profile* profile,
 297     chrome::HostDesktopType host_desktop_type) {
 298   CreateParams params(TYPE_POPUP, profile, host_desktop_type);
 299   params.app_name = DevToolsWindow::kDevToolsApp;
 300   params.trusted_source = true;
 301   return params;
 302 }
 303
 304 ////////////////////////////////////////////////////////////////////////////////
 305 // Browser, InterstitialObserver:
 306
 307 class Browser::InterstitialObserver : public content::WebContentsObserver {
 308  public:
 309   InterstitialObserver(Browser* browser, content::WebContents* web_contents)
 310       : WebContentsObserver(web_contents),
 311         browser_(browser) {
 312   }
 313
 314   using content::WebContentsObserver::web_contents;
 315
 316   virtual void DidAttachInterstitialPage() OVERRIDE {
 317     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 318   }
 319
 320   virtual void DidDetachInterstitialPage() OVERRIDE {
 321     browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
 322   }
 323
 324  private:
 325   Browser* browser_;
 326
 327   DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
 328 };
 329
 330 ///////////////////////////////////////////////////////////////////////////////
 331 // Browser, Constructors, Creation, Showing:
 332
 333 Browser::Browser(const CreateParams& params)
 334     : type_(params.type),
 335       profile_(params.profile),
 336       window_(NULL),
 337       tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
 338       tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
 339                                          params.profile)),
 340       app_name_(params.app_name),
 341       is_trusted_source_(params.trusted_source),
 342       cancel_download_confirmation_state_(NOT_PROMPTED),
 343       override_bounds_(params.initial_bounds),
 344       initial_show_state_(params.initial_show_state),
 345       is_session_restore_(params.is_session_restore),
 346       host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
 347           params.host_desktop_type)),
 348       content_setting_bubble_model_delegate_(
 349           new BrowserContentSettingBubbleModelDelegate(this)),
 350       toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
 351       tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
 352       synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
 353       bookmark_bar_state_(BookmarkBar::HIDDEN),
 354       command_controller_(new chrome::BrowserCommandController(this)),
 355       window_has_shown_(false),
 356       chrome_updater_factory_(this),
 357       weak_factory_(this),
 358       translate_driver_observer_(
 359           new BrowserContentTranslateDriverObserver(this)) {
 360   // If this causes a crash then a window is being opened using a profile type
 361   // that is disallowed by policy. The crash prevents the disabled window type
 362   // from opening at all, but the path that triggered it should be fixed.
 363   CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
 364   CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
 365       << "Only off the record browser may be opened in guest mode";
 366
 367   // TODO(jeremy): Move to initializer list once flag is removed.
 368   if (IsFastTabUnloadEnabled())
 369     fast_unload_controller_.reset(new chrome::FastUnloadController(this));
 370   else
 371     unload_controller_.reset(new chrome::UnloadController(this));
 372
 373   if (!app_name_.empty())
 374     chrome::RegisterAppPrefs(app_name_, profile_);
 375   tab_strip_model_->AddObserver(this);
 376
 377   toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
 378   search_model_.reset(new SearchModel());
 379   search_delegate_.reset(new SearchDelegate(search_model_.get()));
 380
 381   registrar_.Add(this,
 382                  extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 383                  content::Source<Profile>(profile_->GetOriginalProfile()));
 384   registrar_.Add(this,
 385                  extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
 386                  content::Source<Profile>(profile_->GetOriginalProfile()));
 387   registrar_.Add(this,
 388                  extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED,
 389                  content::Source<Profile>(profile_->GetOriginalProfile()));
 390   registrar_.Add(this,
 391                  extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
 392                  content::NotificationService::AllSources());
 393 #if defined(ENABLE_THEMES)
 394   registrar_.Add(
 395       this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
 396       content::Source<ThemeService>(
 397           ThemeServiceFactory::GetForProfile(profile_)));
 398 #endif
 399   registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
 400                  content::NotificationService::AllSources());
 401
 402   profile_pref_registrar_.Init(profile_->GetPrefs());
 403   profile_pref_registrar_.Add(
 404       prefs::kDevToolsDisabled,
 405       base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
 406   profile_pref_registrar_.Add(
 407       bookmarks::prefs::kShowBookmarkBar,
 408       base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
 409                  BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));
 410
 411   BrowserList::AddBrowser(this);
 412
 413   // NOTE: These prefs all need to be explicitly destroyed in the destructor
 414   // or you'll get a nasty surprise when you run the incognito tests.
 415   encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
 416                              profile_->GetPrefs());
 417
 418   if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
 419     instant_controller_.reset(new BrowserInstantController(this));
 420
 421   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);
 422
 423   ProfileMetrics::LogProfileLaunch(profile_);
 424
 425   window_ = params.window ? params.window : CreateBrowserWindow(this);
 426
 427   // Create the extension window controller before sending notifications.
 428   extension_window_controller_.reset(
 429       new BrowserExtensionWindowController(this));
 430
 431   SessionService* session_service =
 432       SessionServiceFactory::GetForProfileForSessionRestore(profile_);
 433   if (session_service)
 434     session_service->WindowOpened(this);
 435
 436   // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
 437   //             replace uses of this with BL's notifications.
 438   content::NotificationService::current()->Notify(
 439       chrome::NOTIFICATION_BROWSER_WINDOW_READY,
 440       content::Source<Browser>(this),
 441       content::NotificationService::NoDetails());
 442
 443   // TODO(beng): move to ChromeBrowserMain:
 444   if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
 445 #if defined(OS_WIN)
 446     // Notify PDM that this is a first run.
 447     ImportAutofillDataWin(
 448         autofill::PersonalDataManagerFactory::GetForProfile(profile_));
 449 #endif  // defined(OS_WIN)
 450   }
 451
 452   fullscreen_controller_.reset(new FullscreenController(this));
 453
 454   // Must be initialized after window_.
 455   // Also: surprise! a modal dialog host is not necessary to host modal dialogs
 456   // without a modal dialog host, so that value may be null.
 457   popup_manager_.reset(new web_modal::PopupManager(
 458       GetWebContentsModalDialogHost()));
 459 }
 460
 461 Browser::~Browser() {
 462   // Stop observing notifications before continuing with destruction. Profile
 463   // destruction will unload extensions and reentrant calls to Browser:: should
 464   // be avoided while it is being torn down.
 465   registrar_.RemoveAll();
 466
 467   // The tab strip should not have any tabs at this point.
 468   DCHECK(tab_strip_model_->empty());
 469   tab_strip_model_->RemoveObserver(this);
 470
 471   // Destroy the BrowserCommandController before removing the browser, so that
 472   // it doesn't act on any notifications that are sent as a result of removing
 473   // the browser.
 474   command_controller_.reset();
 475   BrowserList::RemoveBrowser(this);
 476
 477   SessionService* session_service =
 478       SessionServiceFactory::GetForProfile(profile_);
 479   if (session_service)
 480     session_service->WindowClosed(session_id_);
 481
 482   TabRestoreService* tab_restore_service =
 483       TabRestoreServiceFactory::GetForProfile(profile());
 484   if (tab_restore_service)
 485     tab_restore_service->BrowserClosed(tab_restore_service_delegate());
 486
 487 #if !defined(OS_MACOSX)
 488   if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
 489     // We're the last browser window with this profile. We need to nuke the
 490     // TabRestoreService, which will start the shutdown of the
 491     // NavigationControllers and allow for proper shutdown. If we don't do this
 492     // chrome won't shutdown cleanly, and may end up crashing when some
 493     // thread tries to use the IO thread (or another thread) that is no longer
 494     // valid.
 495     // This isn't a valid assumption for Mac OS, as it stays running after
 496     // the last browser has closed. The Mac equivalent is in its app
 497     // controller.
 498     TabRestoreServiceFactory::ResetForProfile(profile_);
 499   }
 500 #endif
 501
 502   profile_pref_registrar_.RemoveAll();
 503
 504   encoding_auto_detect_.Destroy();
 505
 506   // Destroy BrowserExtensionWindowController before the incognito profile
 507   // is destroyed to make sure the chrome.windows.onRemoved event is sent.
 508   extension_window_controller_.reset();
 509
 510   // Destroy BrowserInstantController before the incongnito profile is destroyed
 511   // because the InstantController destructor depends on this profile.
 512   instant_controller_.reset();
 513
 514   if (profile_->IsOffTheRecord() &&
 515       !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
 516     // An incognito profile is no longer needed, this indirectly frees
 517     // its cache and cookies once it gets destroyed at the appropriate time.
 518     ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
 519   }
 520
 521   // There may be pending file dialogs, we need to tell them that we've gone
 522   // away so they don't try and call back to us.
 523   if (select_file_dialog_.get())
 524     select_file_dialog_->ListenerDestroyed();
 525
 526   int num_downloads;
 527   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
 528           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
 529       !browser_defaults::kBrowserAliveWithNoWindows) {
 530     DownloadService::CancelAllDownloads();
 531   }
 532 }
 533
 534 ///////////////////////////////////////////////////////////////////////////////
 535 // Getters & Setters
 536
 537 FindBarController* Browser::GetFindBarController() {
 538   if (!find_bar_controller_.get()) {
 539     FindBar* find_bar = window_->CreateFindBar();
 540     find_bar_controller_.reset(new FindBarController(find_bar));
 541     find_bar->SetFindBarController(find_bar_controller_.get());
 542     find_bar_controller_->ChangeWebContents(
 543         tab_strip_model_->GetActiveWebContents());
 544     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
 545   }
 546   return find_bar_controller_.get();
 547 }
 548
 549 bool Browser::HasFindBarController() const {
 550   return find_bar_controller_.get() != NULL;
 551 }
 552
 553 bool Browser::is_app() const {
 554   return !app_name_.empty();
 555 }
 556
 557 bool Browser::is_devtools() const {
 558   return app_name_ == DevToolsWindow::kDevToolsApp;
 559 }
 560
 561 ///////////////////////////////////////////////////////////////////////////////
 562 // Browser, State Storage and Retrieval for UI:
 563
 564 gfx::Image Browser::GetCurrentPageIcon() const {
 565   WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
 566   // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
 567   // window during the window's creation (before tabs have been added).
 568   FaviconTabHelper* favicon_tab_helper =
 569       web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
 570   return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
 571 }
 572
 573 base::string16 Browser::GetWindowTitleForCurrentTab() const {
 574   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 575   base::string16 title;
 576
 577   // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
 578   // window during the window's creation (before tabs have been added).
 579   if (contents) {
 580     // Streamlined hosted apps use the host instead of the title.
 581     if (is_app() && extensions::util::IsStreamlinedHostedAppsEnabled())
 582       return base::UTF8ToUTF16(contents->GetURL().host());
 583
 584     title = contents->GetTitle();
 585     FormatTitleForDisplay(&title);
 586   }
 587   if (title.empty())
 588     title = CoreTabHelper::GetDefaultTitle();
 589
 590 #if defined(OS_MACOSX)
 591   // On Mac, we don't want to suffix the page title with
 592   // the application name.
 593   return title;
 594 #elif defined(USE_ASH)
 595   // On Ash, we don't want to suffix the page title with the application name,
 596   // but on Windows, where USE_ASH can also be true, we still want the prefix
 597   // on desktop.
 598   if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
 599     return title;
 600 #endif
 601   // Don't append the app name to window titles on app frames and app popups
 602   return is_app() ?
 603       title :
 604       l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
 605 }
 606
 607 // static
 608 void Browser::FormatTitleForDisplay(base::string16* title) {
 609   size_t current_index = 0;
 610   size_t match_index;
 611   while ((match_index = title->find(L'\n', current_index)) !=
 612          base::string16::npos) {
 613     title->replace(match_index, 1, base::string16());
 614     current_index = match_index;
 615   }
 616 }
 617
 618 ///////////////////////////////////////////////////////////////////////////////
 619 // Browser, OnBeforeUnload handling:
 620
 621 bool Browser::ShouldCloseWindow() {
 622   if (!CanCloseWithInProgressDownloads())
 623     return false;
 624
 625   if (IsFastTabUnloadEnabled())
 626     return fast_unload_controller_->ShouldCloseWindow();
 627   return unload_controller_->ShouldCloseWindow();
 628 }
 629
 630 bool Browser::CallBeforeUnloadHandlers(
 631     const base::Callback<void(bool)>& on_close_confirmed) {
 632   cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 633   if (IsFastTabUnloadEnabled()) {
 634     return fast_unload_controller_->CallBeforeUnloadHandlers(
 635         on_close_confirmed);
 636   }
 637   return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
 638 }
 639
 640 void Browser::ResetBeforeUnloadHandlers() {
 641   cancel_download_confirmation_state_ = NOT_PROMPTED;
 642   if (IsFastTabUnloadEnabled())
 643     fast_unload_controller_->ResetBeforeUnloadHandlers();
 644   else
 645     unload_controller_->ResetBeforeUnloadHandlers();
 646 }
 647
 648 bool Browser::HasCompletedUnloadProcessing() const {
 649   DCHECK(IsFastTabUnloadEnabled());
 650   return fast_unload_controller_->HasCompletedUnloadProcessing();
 651 }
 652
 653 bool Browser::IsAttemptingToCloseBrowser() const {
 654   if (IsFastTabUnloadEnabled())
 655     return fast_unload_controller_->is_attempting_to_close_browser();
 656   return unload_controller_->is_attempting_to_close_browser();
 657 }
 658
 659 void Browser::OnWindowClosing() {
 660   if (!ShouldCloseWindow())
 661     return;
 662
 663   // Application should shutdown on last window close if the user is explicitly
 664   // trying to quit, or if there is nothing keeping the browser alive (such as
 665   // AppController on the Mac, or BackgroundContentsService for background
 666   // pages).
 667   bool should_quit_if_last_browser =
 668       browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();
 669
 670   if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
 671     browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);
 672
 673   // Don't use GetForProfileIfExisting here, we want to force creation of the
 674   // session service so that user can restore what was open.
 675   SessionService* session_service =
 676       SessionServiceFactory::GetForProfile(profile());
 677   if (session_service)
 678     session_service->WindowClosing(session_id());
 679
 680   TabRestoreService* tab_restore_service =
 681       TabRestoreServiceFactory::GetForProfile(profile());
 682
 683 #if defined(USE_AURA)
 684   if (tab_restore_service && is_app() && !is_devtools())
 685     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 686 #endif
 687
 688   if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
 689     tab_restore_service->BrowserClosing(tab_restore_service_delegate());
 690
 691   // TODO(sky): convert session/tab restore to use notification.
 692   content::NotificationService::current()->Notify(
 693       chrome::NOTIFICATION_BROWSER_CLOSING,
 694       content::Source<Browser>(this),
 695       content::NotificationService::NoDetails());
 696
 697   if (!IsFastTabUnloadEnabled())
 698     tab_strip_model_->CloseAllTabs();
 699 }
 700
 701 ////////////////////////////////////////////////////////////////////////////////
 702 // In-progress download termination handling:
 703
 704 void Browser::InProgressDownloadResponse(bool cancel_downloads) {
 705   if (cancel_downloads) {
 706     cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
 707     chrome::CloseWindow(this);
 708     return;
 709   }
 710
 711   // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
 712   // close again we'll show the warning again.
 713   cancel_download_confirmation_state_ = NOT_PROMPTED;
 714
 715   // Show the download page so the user can figure-out what downloads are still
 716   // in-progress.
 717   chrome::ShowDownloads(this);
 718
 719   // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
 720   // prompt every time any tab is closed. http://crbug.com/305516
 721   if (IsFastTabUnloadEnabled())
 722     fast_unload_controller_->CancelWindowClose();
 723   else
 724     unload_controller_->CancelWindowClose();
 725 }
 726
 727 Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
 728     int* num_downloads_blocking) const {
 729   DCHECK(num_downloads_blocking);
 730   *num_downloads_blocking = 0;
 731
 732   // If we're not running a full browser process with a profile manager
 733   // (testing), it's ok to close the browser.
 734   if (!g_browser_process->profile_manager())
 735     return DOWNLOAD_CLOSE_OK;
 736
 737   int total_download_count =
 738       DownloadService::NonMaliciousDownloadCountAllProfiles();
 739   if (total_download_count == 0)
 740     return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.
 741
 742   // Figure out how many windows are open total, and associated with this
 743   // profile, that are relevant for the ok-to-close decision.
 744   int profile_window_count = 0;
 745   int total_window_count = 0;
 746   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
 747     // Don't count this browser window or any other in the process of closing.
 748     Browser* const browser = *it;
 749     // Window closing may be delayed, and windows that are in the process of
 750     // closing don't count against our totals.
 751     if (browser == this || browser->IsAttemptingToCloseBrowser())
 752       continue;
 753
 754     if (it->profile() == profile())
 755       profile_window_count++;
 756     total_window_count++;
 757   }
 758
 759   // If there aren't any other windows, we're at browser shutdown,
 760   // which would cancel all current downloads.
 761   if (total_window_count == 0) {
 762     *num_downloads_blocking = total_download_count;
 763     return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
 764   }
 765
 766   // If there aren't any other windows on our profile, and we're an incognito
 767   // profile, and there are downloads associated with that profile,
 768   // those downloads would be cancelled by our window (-> profile) close.
 769   DownloadService* download_service =
 770       DownloadServiceFactory::GetForBrowserContext(profile());
 771   if ((profile_window_count == 0) &&
 772       (download_service->NonMaliciousDownloadCount() > 0) &&
 773       profile()->IsOffTheRecord()) {
 774     *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
 775     return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
 776   }
 777
 778   // Those are the only conditions under which we will block shutdown.
 779   return DOWNLOAD_CLOSE_OK;
 780 }
 781
 782 ////////////////////////////////////////////////////////////////////////////////
 783 // Browser, Tab adding/showing functions:
 784
 785 void Browser::WindowFullscreenStateChanged() {
 786   fullscreen_controller_->WindowFullscreenStateChanged();
 787   command_controller_->FullscreenStateChanged();
 788   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
 789 }
 790
 791 ///////////////////////////////////////////////////////////////////////////////
 792 // Browser, Assorted browser commands:
 793
 794 void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
 795   fullscreen_controller_->
 796       ToggleBrowserFullscreenModeWithExtension(extension_url);
 797 }
 798
 799 bool Browser::SupportsWindowFeature(WindowFeature feature) const {
 800   return SupportsWindowFeatureImpl(feature, true);
 801 }
 802
 803 bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
 804   return SupportsWindowFeatureImpl(feature, false);
 805 }
 806
 807 void Browser::ToggleEncodingAutoDetect() {
 808   content::RecordAction(UserMetricsAction("AutoDetectChange"));
 809   encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
 810   // If "auto detect" is turned on, then any current override encoding
 811   // is cleared. This also implicitly performs a reload.
 812   // OTOH, if "auto detect" is turned off, we don't change the currently
 813   // active encoding.
 814   if (encoding_auto_detect_.GetValue()) {
 815     WebContents* contents = tab_strip_model_->GetActiveWebContents();
 816     if (contents)
 817       contents->ResetOverrideEncoding();
 818   }
 819 }
 820
 821 void Browser::OverrideEncoding(int encoding_id) {
 822   content::RecordAction(UserMetricsAction("OverrideEncoding"));
 823   const std::string selected_encoding =
 824       CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
 825   WebContents* contents = tab_strip_model_->GetActiveWebContents();
 826   if (!selected_encoding.empty() && contents)
 827      contents->SetOverrideEncoding(selected_encoding);
 828   // Update the list of recently selected encodings.
 829   std::string new_selected_encoding_list;
 830   if (CharacterEncoding::UpdateRecentlySelectedEncoding(
 831         profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
 832         encoding_id,
 833         &new_selected_encoding_list)) {
 834     profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
 835                                     new_selected_encoding_list);
 836   }
 837 }
 838
 839 void Browser::OpenFile() {
 840   content::RecordAction(UserMetricsAction("OpenFile"));
 841   select_file_dialog_ = ui::SelectFileDialog::Create(
 842       this, new ChromeSelectFilePolicy(
 843           tab_strip_model_->GetActiveWebContents()));
 844
 845   const base::FilePath directory = profile_->last_selected_directory();
 846
 847   // TODO(beng): figure out how to juggle this.
 848   gfx::NativeWindow parent_window = window_->GetNativeWindow();
 849   ui::SelectFileDialog::FileTypeInfo file_types;
 850   file_types.support_drive = true;
 851   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
 852                                   base::string16(),
 853                                   directory,
 854                                   &file_types,
 855                                   0,
 856                                   base::FilePath::StringType(),
 857                                   parent_window,
 858                                   NULL);
 859 }
 860
 861 void Browser::UpdateDownloadShelfVisibility(bool visible) {
 862   if (GetStatusBubble())
 863     GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
 864 }
 865
 866 ///////////////////////////////////////////////////////////////////////////////
 867
 868 void Browser::UpdateUIForNavigationInTab(WebContents* contents,
 869                                          content::PageTransition transition,
 870                                          bool user_initiated) {
 871   tab_strip_model_->TabNavigating(contents, transition);
 872
 873   bool contents_is_selected =
 874       contents == tab_strip_model_->GetActiveWebContents();
 875   if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
 876     // Forcibly reset the location bar if the url is going to change in the
 877     // current tab, since otherwise it won't discard any ongoing user edits,
 878     // since it doesn't realize this is a user-initiated action.
 879     window()->GetLocationBar()->Revert();
 880   }
 881
 882   if (GetStatusBubble())
 883     GetStatusBubble()->Hide();
 884
 885   // Update the location bar. This is synchronous. We specifically don't
 886   // update the load state since the load hasn't started yet and updating it
 887   // will put it out of sync with the actual state like whether we're
 888   // displaying a favicon, which controls the throbber. If we updated it here,
 889   // the throbber will show the default favicon for a split second when
 890   // navigating away from the new tab page.
 891   ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);
 892
 893   if (contents_is_selected)
 894     contents->SetInitialFocus();
 895 }
 896
 897 ///////////////////////////////////////////////////////////////////////////////
 898 // Browser, PageNavigator implementation:
 899
 900 WebContents* Browser::OpenURL(const OpenURLParams& params) {
 901   return OpenURLFromTab(NULL, params);
 902 }
 903
 904 ///////////////////////////////////////////////////////////////////////////////
 905 // Browser, TabStripModelObserver implementation:
 906
 907 void Browser::TabInsertedAt(WebContents* contents,
 908                             int index,
 909                             bool foreground) {
 910   SetAsDelegate(contents, true);
 911
 912   if (popup_manager_)
 913     popup_manager_->RegisterWith(contents);
 914
 915   SessionTabHelper* session_tab_helper =
 916       SessionTabHelper::FromWebContents(contents);
 917   session_tab_helper->SetWindowID(session_id());
 918
 919   content::NotificationService::current()->Notify(
 920       chrome::NOTIFICATION_TAB_PARENTED,
 921       content::Source<content::WebContents>(contents),
 922       content::NotificationService::NoDetails());
 923
 924   SyncHistoryWithTabs(index);
 925
 926   // Make sure the loading state is updated correctly, otherwise the throbber
 927   // won't start if the page is loading.
 928   LoadingStateChanged(contents, true);
 929
 930   interstitial_observers_.push_back(new InterstitialObserver(this, contents));
 931
 932   SessionService* session_service =
 933       SessionServiceFactory::GetForProfile(profile_);
 934   if (session_service) {
 935     session_service->TabInserted(contents);
 936     int new_active_index = tab_strip_model_->active_index();
 937     if (index < new_active_index)
 938       session_service->SetSelectedTabInWindow(session_id(),
 939                                               new_active_index);
 940   }
 941 }
 942
 943 void Browser::TabClosingAt(TabStripModel* tab_strip_model,
 944                            WebContents* contents,
 945                            int index) {
 946   fullscreen_controller_->OnTabClosing(contents);
 947   SessionService* session_service =
 948       SessionServiceFactory::GetForProfile(profile_);
 949   if (session_service)
 950     session_service->TabClosing(contents);
 951   content::NotificationService::current()->Notify(
 952       chrome::NOTIFICATION_TAB_CLOSING,
 953       content::Source<NavigationController>(&contents->GetController()),
 954       content::NotificationService::NoDetails());
 955
 956   if (popup_manager_)
 957     popup_manager_->UnregisterWith(contents);
 958
 959   // Sever the WebContents' connection back to us.
 960   SetAsDelegate(contents, false);
 961 }
 962
 963 void Browser::TabDetachedAt(WebContents* contents, int index) {
 964   // TabDetachedAt is called before TabStripModel has updated the
 965   // active index.
 966   int old_active_index = tab_strip_model_->active_index();
 967   if (index < old_active_index && !tab_strip_model_->closing_all()) {
 968     SessionService* session_service =
 969         SessionServiceFactory::GetForProfileIfExisting(profile_);
 970     if (session_service)
 971       session_service->SetSelectedTabInWindow(session_id(),
 972                                               old_active_index - 1);
 973   }
 974
 975   if (popup_manager_)
 976     popup_manager_->UnregisterWith(contents);
 977
 978   TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
 979 }
 980
 981 void Browser::TabDeactivated(WebContents* contents) {
 982   fullscreen_controller_->OnTabDeactivated(contents);
 983   search_delegate_->OnTabDeactivated(contents);
 984   SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();
 985
 986   // Save what the user's currently typing, so it can be restored when we
 987   // switch back to this tab.
 988   window_->GetLocationBar()->SaveStateToContents(contents);
 989
 990   if (instant_controller_)
 991     instant_controller_->TabDeactivated(contents);
 992 }
 993
 994 void Browser::ActiveTabChanged(WebContents* old_contents,
 995                                WebContents* new_contents,
 996                                int index,
 997                                int reason) {
 998   content::RecordAction(UserMetricsAction("ActiveTabChanged"));
 999
1000   // Update the bookmark state, since the BrowserWindow may query it during
1001   // OnActiveTabChanged() below.
1002   UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);
1003
1004   // Let the BrowserWindow do its handling.  On e.g. views this changes the
1005   // focused object, which should happen before we update the toolbar below,
1006   // since the omnibox expects the correct element to already be focused when it
1007   // is updated.
1008   window_->OnActiveTabChanged(old_contents, new_contents, index, reason);
1009
1010   fullscreen_controller_->OnTabDetachedFromView(old_contents);
1011
1012   // Discarded tabs always get reloaded.
1013   if (tab_strip_model_->IsTabDiscarded(index)) {
1014     LOG(WARNING) << "Reloading discarded tab at " << index;
1015     static int reload_count = 0;
1016     UMA_HISTOGRAM_CUSTOM_COUNTS(
1017         "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
1018     chrome::Reload(this, CURRENT_TAB);
1019   }
1020
1021   // If we have any update pending, do it now.
1022   if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
1023     ProcessPendingUIUpdates();
1024
1025   // Propagate the profile to the location bar.
1026   UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);
1027
1028   if (chrome::IsInstantExtendedAPIEnabled())
1029     search_delegate_->OnTabActivated(new_contents);
1030
1031   // Update reload/stop state.
1032   command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);
1033
1034   // Update commands to reflect current state.
1035   command_controller_->TabStateChanged();
1036
1037   // Reset the status bubble.
1038   StatusBubble* status_bubble = GetStatusBubble();
1039   if (status_bubble) {
1040     status_bubble->Hide();
1041
1042     // Show the loading state (if any).
1043     status_bubble->SetStatus(CoreTabHelper::FromWebContents(
1044         tab_strip_model_->GetActiveWebContents())->GetStatusText());
1045   }
1046
1047   if (HasFindBarController()) {
1048     find_bar_controller_->ChangeWebContents(new_contents);
1049     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
1050   }
1051
1052   // Update sessions. Don't force creation of sessions. If sessions doesn't
1053   // exist, the change will be picked up by sessions when created.
1054   SessionService* session_service =
1055       SessionServiceFactory::GetForProfileIfExisting(profile_);
1056   if (session_service && !tab_strip_model_->closing_all()) {
1057     session_service->SetSelectedTabInWindow(session_id(),
1058                                             tab_strip_model_->active_index());
1059   }
1060
1061   // This needs to be called after notifying SearchDelegate.
1062   if (instant_controller_)
1063     instant_controller_->ActiveTabChanged();
1064
1065   autofill::ChromeAutofillClient::FromWebContents(new_contents)->TabActivated();
1066   SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
1067 }
1068
1069 void Browser::TabMoved(WebContents* contents,
1070                        int from_index,
1071                        int to_index) {
1072   DCHECK(from_index >= 0 && to_index >= 0);
1073   // Notify the history service.
1074   SyncHistoryWithTabs(std::min(from_index, to_index));
1075 }
1076
1077 void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
1078                             WebContents* old_contents,
1079                             WebContents* new_contents,
1080                             int index) {
1081   TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
1082   fullscreen_controller_->OnTabClosing(old_contents);
1083   SessionService* session_service =
1084       SessionServiceFactory::GetForProfile(profile_);
1085   if (session_service)
1086     session_service->TabClosing(old_contents);
1087   TabInsertedAt(new_contents,
1088                 index,
1089                 (index == tab_strip_model_->active_index()));
1090
1091   int entry_count = new_contents->GetController().GetEntryCount();
1092   if (entry_count > 0) {
1093     // Send out notification so that observers are updated appropriately.
1094     new_contents->GetController().NotifyEntryChanged(
1095         new_contents->GetController().GetEntryAtIndex(entry_count - 1),
1096         entry_count - 1);
1097   }
1098
1099   if (session_service) {
1100     // The new_contents may end up with a different navigation stack. Force
1101     // the session service to update itself.
1102     session_service->TabRestored(new_contents,
1103                                  tab_strip_model_->IsTabPinned(index));
1104   }
1105 }
1106
1107 void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
1108   SessionService* session_service =
1109       SessionServiceFactory::GetForProfileIfExisting(profile());
1110   if (session_service) {
1111     SessionTabHelper* session_tab_helper =
1112         SessionTabHelper::FromWebContents(contents);
1113     session_service->SetPinnedState(session_id(),
1114                                     session_tab_helper->session_id(),
1115                                     tab_strip_model_->IsTabPinned(index));
1116   }
1117 }
1118
1119 void Browser::TabStripEmpty() {
1120   // Close the frame after we return to the message loop (not immediately,
1121   // otherwise it will destroy this object before the stack has a chance to
1122   // cleanly unwind.)
1123   // Note: This will be called several times if TabStripEmpty is called several
1124   //       times. This is because it does not close the window if tabs are
1125   //       still present.
1126   base::MessageLoop::current()->PostTask(
1127       FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));
1128
1129   // Instant may have visible WebContents that need to be detached before the
1130   // window system closes.
1131   instant_controller_.reset();
1132 }
1133
1134 bool Browser::CanOverscrollContent() const {
1135 #if defined(USE_AURA)
1136   const std::string value = CommandLine::ForCurrentProcess()->
1137       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
1138   bool overscroll_enabled = value != "0";
1139   if (!overscroll_enabled)
1140     return false;
1141   if (is_app() || is_devtools() || !is_type_tabbed())
1142     return false;
1143
1144   // The detached bookmark bar has appearance of floating above the
1145   // web-contents. This does not play nicely with overscroll navigation
1146   // gestures. So disable overscroll navigation when the bookmark bar is in the
1147   // detached state and the overscroll effect moves the layers.
1148   if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
1149     return false;
1150   return true;
1151 #else
1152   return false;
1153 #endif
1154 }
1155
1156 bool Browser::ShouldPreserveAbortedURLs(WebContents* source) {
1157   // Allow failed URLs to stick around in the omnibox on the NTP, but not when
1158   // other pages have committed.
1159   Profile* profile = Profile::FromBrowserContext(source->GetBrowserContext());
1160   if (!profile || !source->GetController().GetLastCommittedEntry())
1161     return false;
1162   GURL committed_url(source->GetController().GetLastCommittedEntry()->GetURL());
1163   return chrome::IsNTPURL(committed_url, profile);
1164 }
1165
1166 bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
1167                                      const NativeWebKeyboardEvent& event,
1168                                      bool* is_keyboard_shortcut) {
1169   // Escape exits tabbed fullscreen mode.
1170   // TODO(koz): Write a test for this http://crbug.com/100441.
1171   if (event.windowsKeyCode == 27 &&
1172       fullscreen_controller_->HandleUserPressedEscape()) {
1173     return true;
1174   }
1175   return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
1176 }
1177
1178 void Browser::HandleKeyboardEvent(content::WebContents* source,
1179                                   const NativeWebKeyboardEvent& event) {
1180   DevToolsWindow* devtools_window =
1181       DevToolsWindow::GetInstanceForInspectedWebContents(source);
1182   bool handled = false;
1183   if (devtools_window)
1184     handled = devtools_window->ForwardKeyboardEvent(event);
1185
1186   if (!handled)
1187     window()->HandleKeyboardEvent(event);
1188 }
1189
1190 bool Browser::TabsNeedBeforeUnloadFired() {
1191   if (IsFastTabUnloadEnabled())
1192     return fast_unload_controller_->TabsNeedBeforeUnloadFired();
1193   return unload_controller_->TabsNeedBeforeUnloadFired();
1194 }
1195
1196 void Browser::OverscrollUpdate(int delta_y) {
1197   window_->OverscrollUpdate(delta_y);
1198 }
1199
1200 void Browser::ShowValidationMessage(content::WebContents* web_contents,
1201                                     const gfx::Rect& anchor_in_root_view,
1202                                     const base::string16& main_text,
1203                                     const base::string16& sub_text) {
1204   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1205   if (rwhv) {
1206     validation_message_bubble_ =
1207         chrome::ValidationMessageBubble::CreateAndShow(
1208             rwhv->GetRenderWidgetHost(),
1209             anchor_in_root_view,
1210             main_text,
1211             sub_text);
1212   }
1213 }
1214
1215 void Browser::HideValidationMessage(content::WebContents* web_contents) {
1216   validation_message_bubble_.reset();
1217 }
1218
1219 void Browser::MoveValidationMessage(content::WebContents* web_contents,
1220                                     const gfx::Rect& anchor_in_root_view) {
1221   if (!validation_message_bubble_)
1222     return;
1223   RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
1224   if (rwhv) {
1225     validation_message_bubble_->SetPositionRelativeToAnchor(
1226         rwhv->GetRenderWidgetHost(), anchor_in_root_view);
1227   }
1228 }
1229
1230 bool Browser::PreHandleGestureEvent(content::WebContents* source,
1231                                     const blink::WebGestureEvent& event) {
1232   // Disable pinch zooming in undocked dev tools window due to poor UX.
1233   if (app_name() == DevToolsWindow::kDevToolsApp)
1234     return event.type == blink::WebGestureEvent::GesturePinchBegin ||
1235            event.type == blink::WebGestureEvent::GesturePinchUpdate ||
1236            event.type == blink::WebGestureEvent::GesturePinchEnd;
1237
1238   return false;
1239 }
1240
1241 bool Browser::CanDragEnter(content::WebContents* source,
1242                            const content::DropData& data,
1243                            blink::WebDragOperationsMask operations_allowed) {
1244   // Disallow drag-and-drop navigation for Settings windows which do not support
1245   // external navigation.
1246   if ((operations_allowed & blink::WebDragOperationLink) &&
1247       chrome::SettingsWindowManager::GetInstance()->IsSettingsBrowser(this)) {
1248     return false;
1249   }
1250   return true;
1251 }
1252
1253 bool Browser::IsMouseLocked() const {
1254   return fullscreen_controller_->IsMouseLocked();
1255 }
1256
1257 void Browser::OnWindowDidShow() {
1258   if (window_has_shown_)
1259     return;
1260   window_has_shown_ = true;
1261
1262 // CurrentProcessInfo::CreationTime() is missing on some platforms.
1263 #if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1264   // Measure the latency from startup till the first browser window becomes
1265   // visible.
1266   static bool is_first_browser_window = true;
1267   if (is_first_browser_window &&
1268       !startup_metric_utils::WasNonBrowserUIDisplayed()) {
1269     is_first_browser_window = false;
1270     const base::Time process_creation_time =
1271         base::CurrentProcessInfo::CreationTime();
1272
1273     if (!process_creation_time.is_null()) {
1274       UMA_HISTOGRAM_LONG_TIMES(
1275           "Startup.BrowserWindowDisplay",
1276           base::Time::Now() - process_creation_time);
1277     }
1278   }
1279 #endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
1280
1281   // Nothing to do for non-tabbed windows.
1282   if (!is_type_tabbed())
1283     return;
1284
1285   // Show any pending global error bubble.
1286   GlobalErrorService* service =
1287       GlobalErrorServiceFactory::GetForProfile(profile());
1288   GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
1289   if (error)
1290     error->ShowBubbleView(this);
1291 }
1292
1293 void Browser::ShowFirstRunBubble() {
1294   window()->GetLocationBar()->ShowFirstRunBubble();
1295 }
1296
1297 void Browser::ShowDownload(content::DownloadItem* download) {
1298   if (!window())
1299     return;
1300
1301   // If the download occurs in a new tab, and it's not a save page
1302   // download (started before initial navigation completed) close it.
1303   WebContents* source = download->GetWebContents();
1304   if (source && source->GetController().IsInitialNavigation() &&
1305       tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
1306     CloseContents(source);
1307   }
1308
1309   // Some (app downloads) are not supposed to appear on the shelf.
1310   if (!DownloadItemModel(download).ShouldShowInShelf())
1311     return;
1312
1313   // GetDownloadShelf creates the download shelf if it was not yet created.
1314   DownloadShelf* shelf = window()->GetDownloadShelf();
1315   shelf->AddDownload(download);
1316 }
1317
1318 ///////////////////////////////////////////////////////////////////////////////
1319 // Browser, content::WebContentsDelegate implementation:
1320
1321 WebContents* Browser::OpenURLFromTab(WebContents* source,
1322                                      const OpenURLParams& params) {
1323   chrome::NavigateParams nav_params(this, params.url, params.transition);
1324   FillNavigateParamsFromOpenURLParams(&nav_params, params);
1325   nav_params.source_contents = source;
1326   nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
1327   if (params.user_gesture)
1328     nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
1329   nav_params.user_gesture = params.user_gesture;
1330
1331   PopupBlockerTabHelper* popup_blocker_helper = NULL;
1332   if (source)
1333     popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);
1334
1335   if (popup_blocker_helper) {
1336     if ((params.disposition == NEW_POPUP ||
1337          params.disposition == NEW_FOREGROUND_TAB ||
1338          params.disposition == NEW_BACKGROUND_TAB ||
1339          params.disposition == NEW_WINDOW) &&
1340         !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
1341                                     switches::kDisablePopupBlocking)) {
1342       if (popup_blocker_helper->MaybeBlockPopup(nav_params,
1343                                                 WebWindowFeatures())) {
1344         return NULL;
1345       }
1346     }
1347   }
1348
1349   chrome::Navigate(&nav_params);
1350
1351   return nav_params.target_contents;
1352 }
1353
1354 void Browser::NavigationStateChanged(const WebContents* source,
1355                                      content::InvalidateTypes changed_flags) {
1356   // Only update the UI when something visible has changed.
1357   if (changed_flags)
1358     ScheduleUIUpdate(source, changed_flags);
1359
1360   // We can synchronously update commands since they will only change once per
1361   // navigation, so we don't have to worry about flickering. We do, however,
1362   // need to update the command state early on load to always present usable
1363   // actions in the face of slow-to-commit pages.
1364   if (changed_flags & (content::INVALIDATE_TYPE_URL |
1365                        content::INVALIDATE_TYPE_LOAD))
1366     command_controller_->TabStateChanged();
1367 }
1368
1369 void Browser::VisibleSSLStateChanged(const WebContents* source) {
1370   // When the current tab's SSL state changes, we need to update the URL
1371   // bar to reflect the new state.
1372   DCHECK(source);
1373   if (tab_strip_model_->GetActiveWebContents() == source)
1374     UpdateToolbar(false);
1375 }
1376
1377 void Browser::AddNewContents(WebContents* source,
1378                              WebContents* new_contents,
1379                              WindowOpenDisposition disposition,
1380                              const gfx::Rect& initial_pos,
1381                              bool user_gesture,
1382                              bool* was_blocked) {
1383   chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
1384                          user_gesture, was_blocked);
1385 }
1386
1387 void Browser::ActivateContents(WebContents* contents) {
1388   tab_strip_model_->ActivateTabAt(
1389       tab_strip_model_->GetIndexOfWebContents(contents), false);
1390   window_->Activate();
1391 }
1392
1393 void Browser::DeactivateContents(WebContents* contents) {
1394   window_->Deactivate();
1395 }
1396
1397 void Browser::LoadingStateChanged(WebContents* source,
1398     bool to_different_document) {
1399   window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
1400   window_->UpdateTitleBar();
1401
1402   WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
1403   if (source == selected_contents) {
1404     bool is_loading = source->IsLoading() && to_different_document;
1405     command_controller_->LoadingStateChanged(is_loading, false);
1406     if (GetStatusBubble()) {
1407       GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
1408           tab_strip_model_->GetActiveWebContents())->GetStatusText());
1409     }
1410   }
1411 }
1412
1413 void Browser::CloseContents(WebContents* source) {
1414   bool can_close_contents;
1415   if (IsFastTabUnloadEnabled())
1416     can_close_contents = fast_unload_controller_->CanCloseContents(source);
1417   else
1418     can_close_contents = unload_controller_->CanCloseContents(source);
1419
1420   if (can_close_contents)
1421     chrome::CloseWebContents(this, source, true);
1422 }
1423
1424 void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
1425   if (!IsPopupOrPanel(source)) {
1426     NOTREACHED() << "moving invalid browser type";
1427     return;
1428   }
1429   window_->SetBounds(pos);
1430 }
1431
1432 bool Browser::IsPopupOrPanel(const WebContents* source) const {
1433   return is_type_popup();
1434 }
1435
1436 void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
1437                               const GURL& url) {
1438   if (!GetStatusBubble())
1439     return;
1440
1441   if (source == tab_strip_model_->GetActiveWebContents()) {
1442     PrefService* prefs = profile_->GetPrefs();
1443     GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
1444   }
1445 }
1446
1447 void Browser::ContentsMouseEvent(
1448     WebContents* source, const gfx::Point& location, bool motion) {
1449   if (!GetStatusBubble())
1450     return;
1451
1452   if (source == tab_strip_model_->GetActiveWebContents()) {
1453     GetStatusBubble()->MouseMoved(location, !motion);
1454     if (!motion)
1455       GetStatusBubble()->SetURL(GURL(), std::string());
1456   }
1457 }
1458
1459 void Browser::ContentsZoomChange(bool zoom_in) {
1460   chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
1461 }
1462
1463 void Browser::WebContentsFocused(WebContents* contents) {
1464   window_->WebContentsFocused(contents);
1465 }
1466
1467 bool Browser::TakeFocus(content::WebContents* source,
1468                         bool reverse) {
1469   content::NotificationService::current()->Notify(
1470       chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
1471       content::Source<Browser>(this),
1472       content::NotificationService::NoDetails());
1473   return false;
1474 }
1475
1476 gfx::Rect Browser::GetRootWindowResizerRect() const {
1477   return window_->GetRootWindowResizerRect();
1478 }
1479
1480 void Browser::BeforeUnloadFired(WebContents* web_contents,
1481                                 bool proceed,
1482                                 bool* proceed_to_fire_unload) {
1483   if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
1484         proceed, proceed_to_fire_unload))
1485     return;
1486
1487   if (IsFastTabUnloadEnabled()) {
1488     *proceed_to_fire_unload =
1489         fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
1490   } else {
1491     *proceed_to_fire_unload =
1492         unload_controller_->BeforeUnloadFired(web_contents, proceed);
1493   }
1494 }
1495
1496 bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
1497   const content::NavigationEntry* entry =
1498       source->GetController().GetActiveEntry();
1499   if (entry) {
1500     GURL url = entry->GetURL();
1501     GURL virtual_url = entry->GetVirtualURL();
1502     if ((url.SchemeIs(content::kChromeUIScheme) &&
1503         url.host() == chrome::kChromeUINewTabHost) ||
1504         (virtual_url.SchemeIs(content::kChromeUIScheme) &&
1505         virtual_url.host() == chrome::kChromeUINewTabHost)) {
1506       return true;
1507     }
1508   }
1509
1510   return chrome::NavEntryIsInstantNTP(source, entry);
1511 }
1512
1513 void Browser::SetFocusToLocationBar(bool select_all) {
1514   // Two differences between this and FocusLocationBar():
1515   // (1) This doesn't get recorded in user metrics, since it's called
1516   //     internally.
1517   // (2) This checks whether the location bar can be focused, and if not, clears
1518   //     the focus.  FocusLocationBar() is only reached when the location bar is
1519   //     focusable, but this may be reached at other times, e.g. while in
1520   //     fullscreen mode, where we need to leave focus in a consistent state.
1521   window_->SetFocusToLocationBar(select_all);
1522 }
1523
1524 int Browser::GetExtraRenderViewHeight() const {
1525   return window_->GetExtraRenderViewHeight();
1526 }
1527
1528 void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
1529   DCHECK(source);
1530   chrome::ViewSource(this, source);
1531 }
1532
1533 void Browser::ViewSourceForFrame(WebContents* source,
1534                                  const GURL& frame_url,
1535                                  const content::PageState& frame_page_state) {
1536   DCHECK(source);
1537   chrome::ViewSource(this, source, frame_url, frame_page_state);
1538 }
1539
1540 void Browser::ShowRepostFormWarningDialog(WebContents* source) {
1541   TabModalConfirmDialog::Create(new RepostFormWarningController(source),
1542                                 source);
1543 }
1544
1545 bool Browser::ShouldCreateWebContents(
1546     WebContents* web_contents,
1547     int route_id,
1548     WindowContainerType window_container_type,
1549     const base::string16& frame_name,
1550     const GURL& target_url,
1551     const std::string& partition_id,
1552     content::SessionStorageNamespace* session_storage_namespace) {
1553   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
1554     // If a BackgroundContents is created, suppress the normal WebContents.
1555     return !MaybeCreateBackgroundContents(route_id,
1556                                           web_contents,
1557                                           frame_name,
1558                                           target_url,
1559                                           partition_id,
1560                                           session_storage_namespace);
1561   }
1562
1563   return true;
1564 }
1565
1566 void Browser::WebContentsCreated(WebContents* source_contents,
1567                                  int opener_render_frame_id,
1568                                  const base::string16& frame_name,
1569                                  const GURL& target_url,
1570                                  WebContents* new_contents) {
1571   // Adopt the WebContents now, so all observers are in place, as the network
1572   // requests for its initial navigation will start immediately. The WebContents
1573   // will later be inserted into this browser using Browser::Navigate via
1574   // AddNewContents.
1575   TabHelpers::AttachTabHelpers(new_contents);
1576
1577   // Notify.
1578   RetargetingDetails details;
1579   details.source_web_contents = source_contents;
1580   details.source_render_frame_id = opener_render_frame_id;
1581   details.target_url = target_url;
1582   details.target_web_contents = new_contents;
1583   details.not_yet_in_tabstrip = true;
1584   content::NotificationService::current()->Notify(
1585       chrome::NOTIFICATION_RETARGETING,
1586       content::Source<Profile>(profile_),
1587       content::Details<RetargetingDetails>(&details));
1588 }
1589
1590 void Browser::RendererUnresponsive(WebContents* source) {
1591   // Ignore hangs if a tab is blocked.
1592   int index = tab_strip_model_->GetIndexOfWebContents(source);
1593   DCHECK_NE(TabStripModel::kNoTab, index);
1594   if (tab_strip_model_->IsTabBlocked(index))
1595     return;
1596
1597   chrome::ShowHungRendererDialog(source);
1598 }
1599
1600 void Browser::RendererResponsive(WebContents* source) {
1601   chrome::HideHungRendererDialog(source);
1602 }
1603
1604 void Browser::WorkerCrashed(WebContents* source) {
1605   SimpleAlertInfoBarDelegate::Create(
1606       InfoBarService::FromWebContents(source),
1607       infobars::InfoBarDelegate::kNoIconID,
1608       l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
1609 }
1610
1611 void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
1612   if (web_contents == tab_strip_model_->GetActiveWebContents())
1613     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1614 }
1615
1616 void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
1617   if (web_contents == tab_strip_model_->GetActiveWebContents())
1618     UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
1619 }
1620
1621 content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
1622   return GetJavaScriptDialogManagerInstance();
1623 }
1624
1625 content::ColorChooser* Browser::OpenColorChooser(
1626       WebContents* web_contents,
1627       SkColor initial_color,
1628       const std::vector<content::ColorSuggestion>& suggestions) {
1629   return chrome::ShowColorChooser(web_contents, initial_color);
1630 }
1631
1632 void Browser::RunFileChooser(WebContents* web_contents,
1633                              const content::FileChooserParams& params) {
1634   FileSelectHelper::RunFileChooser(web_contents, params);
1635 }
1636
1637 void Browser::EnumerateDirectory(WebContents* web_contents,
1638                                  int request_id,
1639                                  const base::FilePath& path) {
1640   FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
1641 }
1642
1643 bool Browser::EmbedsFullscreenWidget() const {
1644   return true;
1645 }
1646
1647 void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
1648                                          bool enter_fullscreen) {
1649   fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
1650                                                      enter_fullscreen);
1651 }
1652
1653 bool Browser::IsFullscreenForTabOrPending(
1654     const WebContents* web_contents) const {
1655   return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
1656 }
1657
1658 void Browser::RegisterProtocolHandler(WebContents* web_contents,
1659                                       const std::string& protocol,
1660                                       const GURL& url,
1661                                       bool user_gesture) {
1662   content::BrowserContext* context = web_contents->GetBrowserContext();
1663   if (context->IsOffTheRecord())
1664     return;
1665
1666   ProtocolHandler handler =
1667       ProtocolHandler::CreateProtocolHandler(protocol, url);
1668
1669   ProtocolHandlerRegistry* registry =
1670       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1671   if (registry->SilentlyHandleRegisterHandlerRequest(handler))
1672     return;
1673
1674   TabSpecificContentSettings* tab_content_settings =
1675       TabSpecificContentSettings::FromWebContents(web_contents);
1676   if (!user_gesture && window_) {
1677     tab_content_settings->set_pending_protocol_handler(handler);
1678     tab_content_settings->set_previous_protocol_handler(
1679         registry->GetHandlerFor(handler.protocol()));
1680     window_->GetLocationBar()->UpdateContentSettingsIcons();
1681     return;
1682   }
1683
1684   // Make sure content-setting icon is turned off in case the page does
1685   // ungestured and gestured RPH calls.
1686   if (window_) {
1687     tab_content_settings->ClearPendingProtocolHandler();
1688     window_->GetLocationBar()->UpdateContentSettingsIcons();
1689   }
1690
1691   PermissionBubbleManager* bubble_manager =
1692       PermissionBubbleManager::FromWebContents(web_contents);
1693   if (PermissionBubbleManager::Enabled() && bubble_manager) {
1694     bubble_manager->AddRequest(
1695         new RegisterProtocolHandlerPermissionRequest(registry, handler,
1696                                                      url, user_gesture));
1697   } else {
1698     RegisterProtocolHandlerInfoBarDelegate::Create(
1699         InfoBarService::FromWebContents(web_contents), registry, handler);
1700   }
1701 }
1702
1703 void Browser::UnregisterProtocolHandler(WebContents* web_contents,
1704                                         const std::string& protocol,
1705                                         const GURL& url,
1706                                         bool user_gesture) {
1707   // user_gesture will be used in case we decide to have confirmation bubble
1708   // for user while un-registering the handler.
1709   content::BrowserContext* context = web_contents->GetBrowserContext();
1710   if (context->IsOffTheRecord())
1711     return;
1712
1713   ProtocolHandler handler =
1714       ProtocolHandler::CreateProtocolHandler(protocol, url);
1715
1716   ProtocolHandlerRegistry* registry =
1717       ProtocolHandlerRegistryFactory::GetForBrowserContext(context);
1718   registry->RemoveHandler(handler);
1719 }
1720
1721 void Browser::UpdatePreferredSize(WebContents* source,
1722                                   const gfx::Size& pref_size) {
1723   window_->UpdatePreferredSize(source, pref_size);
1724 }
1725
1726 void Browser::ResizeDueToAutoResize(WebContents* source,
1727                                     const gfx::Size& new_size) {
1728   window_->ResizeDueToAutoResize(source, new_size);
1729 }
1730
1731 void Browser::FindReply(WebContents* web_contents,
1732                         int request_id,
1733                         int number_of_matches,
1734                         const gfx::Rect& selection_rect,
1735                         int active_match_ordinal,
1736                         bool final_update) {
1737   FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
1738   if (!find_tab_helper)
1739     return;
1740
1741   find_tab_helper->HandleFindReply(request_id,
1742                                    number_of_matches,
1743                                    selection_rect,
1744                                    active_match_ordinal,
1745                                    final_update);
1746 }
1747
1748 void Browser::RequestToLockMouse(WebContents* web_contents,
1749                                  bool user_gesture,
1750                                  bool last_unlocked_by_target) {
1751   fullscreen_controller_->RequestToLockMouse(web_contents,
1752                                              user_gesture,
1753                                              last_unlocked_by_target);
1754 }
1755
1756 void Browser::LostMouseLock() {
1757   fullscreen_controller_->LostMouseLock();
1758 }
1759
1760 void Browser::RequestMediaAccessPermission(
1761     content::WebContents* web_contents,
1762     const content::MediaStreamRequest& request,
1763     const content::MediaResponseCallback& callback) {
1764   ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
1765 }
1766
1767 bool Browser::RequestPpapiBrokerPermission(
1768     WebContents* web_contents,
1769     const GURL& url,
1770     const base::FilePath& plugin_path,
1771     const base::Callback<void(bool)>& callback) {
1772   PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
1773   return true;
1774 }
1775
1776 gfx::Size Browser::GetSizeForNewRenderView(WebContents* web_contents) const {
1777   // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
1778   // would disappear on non-NTP pages, resulting in a bigger size for the new
1779   // render view.
1780   gfx::Size size = web_contents->GetContainerBounds().size();
1781   // Don't change render view size if bookmark bar is currently not detached,
1782   // or there's no pending entry, or navigating to a NTP page.
1783   if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
1784     return size;
1785   const NavigationEntry* pending_entry =
1786       web_contents->GetController().GetPendingEntry();
1787   if (pending_entry &&
1788       !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
1789     size.Enlarge(
1790         0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
1791   }
1792   return size;
1793 }
1794
1795 ///////////////////////////////////////////////////////////////////////////////
1796 // Browser, CoreTabHelperDelegate implementation:
1797
1798 void Browser::SwapTabContents(content::WebContents* old_contents,
1799                               content::WebContents* new_contents,
1800                               bool did_start_load,
1801                               bool did_finish_load) {
1802   int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
1803   DCHECK_NE(TabStripModel::kNoTab, index);
1804   tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
1805 }
1806
1807 bool Browser::CanReloadContents(content::WebContents* web_contents) const {
1808   return chrome::CanReload(this);
1809 }
1810
1811 bool Browser::CanSaveContents(content::WebContents* web_contents) const {
1812   return chrome::CanSavePage(this);
1813 }
1814
1815 ///////////////////////////////////////////////////////////////////////////////
1816 // Browser, SearchEngineTabHelperDelegate implementation:
1817
1818 void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
1819                                        Profile* profile) {
1820   window()->ConfirmAddSearchProvider(template_url, profile);
1821 }
1822
1823 ///////////////////////////////////////////////////////////////////////////////
1824 // Browser, SearchTabHelperDelegate implementation:
1825
1826 void Browser::NavigateOnThumbnailClick(const GURL& url,
1827                                        WindowOpenDisposition disposition,
1828                                        content::WebContents* source_contents) {
1829   DCHECK(source_contents);
1830   // We're guaranteed that AUTO_BOOKMARK is the right transition since this only
1831   // gets called to handle clicks in the new tab page (to navigate to most
1832   // visited item URLs) and in the search results page (to navigate to
1833   // privileged destinations (e.g. chrome://URLs)).
1834   //
1835   // TODO(kmadhusu): Page transitions to privileged destinations should be
1836   // marked as "LINK" instead of "AUTO_BOOKMARK"?
1837   chrome::NavigateParams params(this, url,
1838                                 content::PAGE_TRANSITION_AUTO_BOOKMARK);
1839   params.referrer = content::Referrer();
1840   params.source_contents = source_contents;
1841   params.disposition = disposition;
1842   params.is_renderer_initiated = false;
1843   params.initiating_profile = profile_;
1844   chrome::Navigate(&params);
1845 }
1846
1847 void Browser::OnWebContentsInstantSupportDisabled(
1848     const content::WebContents* web_contents) {
1849   DCHECK(web_contents);
1850   if (tab_strip_model_->GetActiveWebContents() == web_contents)
1851     UpdateToolbar(false);
1852 }
1853
1854 OmniboxView* Browser::GetOmniboxView() {
1855   return window_->GetLocationBar()->GetOmniboxView();
1856 }
1857
1858 std::set<std::string> Browser::GetOpenUrls() {
1859   history::TopSites* top_sites = profile_->GetTopSites();
1860   if (!top_sites)  // NULL for Incognito profiles.
1861     return std::set<std::string>();
1862
1863   std::set<std::string> open_urls;
1864   chrome::GetOpenUrls(*tab_strip_model_, *top_sites, &open_urls);
1865   return open_urls;
1866 }
1867
1868 ///////////////////////////////////////////////////////////////////////////////
1869 // Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:
1870
1871 void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
1872                                     bool blocked) {
1873   int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
1874   if (index == TabStripModel::kNoTab) {
1875     NOTREACHED();
1876     return;
1877   }
1878   tab_strip_model_->SetTabBlocked(index, blocked);
1879   if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
1880     web_contents->Focus();
1881 }
1882
1883 web_modal::WebContentsModalDialogHost*
1884 Browser::GetWebContentsModalDialogHost() {
1885   return window_->GetWebContentsModalDialogHost();
1886 }
1887
1888 ///////////////////////////////////////////////////////////////////////////////
1889 // Browser, BookmarkTabHelperDelegate implementation:
1890
1891 void Browser::URLStarredChanged(content::WebContents* web_contents,
1892                                 bool starred) {
1893   if (web_contents == tab_strip_model_->GetActiveWebContents())
1894     window_->SetStarredState(starred);
1895 }
1896
1897 ///////////////////////////////////////////////////////////////////////////////
1898 // Browser, ZoomObserver implementation:
1899
1900 void Browser::OnZoomChanged(const ZoomController::ZoomChangedEventData& data) {
1901   if (data.web_contents == tab_strip_model_->GetActiveWebContents()) {
1902     // Only show the zoom bubble for zoom changes in the active window.
1903     window_->ZoomChangedForActiveTab(data.can_show_bubble &&
1904                                      window_->IsActive());
1905     // Change the zoom commands state based on the zoom state
1906     command_controller_->ZoomStateChanged();
1907   }
1908 }
1909
1910 ///////////////////////////////////////////////////////////////////////////////
1911 // Browser, ui::SelectFileDialog::Listener implementation:
1912
1913 void Browser::FileSelected(const base::FilePath& path, int index,
1914                            void* params) {
1915   FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
1916 }
1917
1918 void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
1919                                         int index,
1920                                         void* params) {
1921   profile_->set_last_selected_directory(file_info.file_path.DirName());
1922
1923   GURL url = net::FilePathToFileURL(file_info.local_path);
1924
1925 #if defined(OS_CHROMEOS)
1926   drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
1927 #endif
1928
1929   if (url.is_empty())
1930     return;
1931
1932   OpenURL(OpenURLParams(
1933       url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
1934 }
1935
1936 ///////////////////////////////////////////////////////////////////////////////
1937 // Browser, content::NotificationObserver implementation:
1938
1939 void Browser::Observe(int type,
1940                       const content::NotificationSource& source,
1941                       const content::NotificationDetails& details) {
1942   switch (type) {
1943     case extensions::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
1944       chrome::UpdateCommandEnabled(
1945           this,
1946           IDC_BOOKMARK_PAGE,
1947           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1948       chrome::UpdateCommandEnabled(
1949           this,
1950           IDC_BOOKMARK_ALL_TABS,
1951           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
1952
1953       if (window()->GetLocationBar())
1954         window()->GetLocationBar()->UpdatePageActions();
1955
1956       const extensions::UnloadedExtensionInfo* extension_info =
1957           content::Details<extensions::UnloadedExtensionInfo>(details).ptr();
1958
1959       // Close any tabs from the unloaded extension, unless it's terminated,
1960       // in which case let the sad tabs remain.
1961       if (extension_info->reason !=
1962           extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
1963         const Extension* extension = extension_info->extension;
1964         // Iterate backwards as we may remove items while iterating.
1965         for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
1966           WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
1967           // Two cases are handled here:
1968           // - The scheme check is for when an extension page is loaded in a
1969           //   tab, e.g. chrome-extension://id/page.html.
1970           // - The extension_app check is for apps, which can have non-extension
1971           //   schemes, e.g. https://mail.google.com if you have the Gmail app
1972           //   installed.
1973           if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
1974                web_contents->GetURL().host() == extension->id()) ||
1975               (extensions::TabHelper::FromWebContents(
1976                    web_contents)->extension_app() == extension)) {
1977             tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
1978           }
1979         }
1980       }
1981       break;
1982     }
1983
1984     case extensions::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
1985       Profile* profile = content::Source<Profile>(source).ptr();
1986       if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
1987         window()->GetLocationBar()->InvalidatePageActions();
1988       break;
1989     }
1990
1991     case extensions::NOTIFICATION_EXTENSION_LOADED_DEPRECATED:
1992       chrome::UpdateCommandEnabled(
1993           this,
1994           IDC_BOOKMARK_PAGE,
1995           !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
1996       chrome::UpdateCommandEnabled(
1997           this,
1998           IDC_BOOKMARK_ALL_TABS,
1999           !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
2000     // fallthrough
2001     case extensions::NOTIFICATION_EXTENSION_UNINSTALLED_DEPRECATED:
2002       // During window creation on Windows we may end up calling into
2003       // SHAppBarMessage, which internally spawns a nested message loop. This
2004       // makes it possible for us to end up here before window creation has
2005       // completed, at which point window_ is NULL. See 94752 for details.
2006       if (window() && window()->GetLocationBar())
2007         window()->GetLocationBar()->UpdatePageActions();
2008       break;
2009
2010 #if defined(ENABLE_THEMES)
2011     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
2012       window()->UserChangedTheme();
2013       break;
2014 #endif
2015
2016     case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
2017       WebContents* web_contents = content::Source<WebContents>(source).ptr();
2018       if (web_contents == tab_strip_model_->GetActiveWebContents()) {
2019         LocationBar* location_bar = window()->GetLocationBar();
2020         if (location_bar)
2021           location_bar->UpdateContentSettingsIcons();
2022       }
2023       break;
2024     }
2025
2026     default:
2027       NOTREACHED() << "Got a notification we didn't register for.";
2028   }
2029 }
2030
2031 ///////////////////////////////////////////////////////////////////////////////
2032 // Browser, Command and state updating (private):
2033
2034 void Browser::OnDevToolsDisabledChanged() {
2035   if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
2036     content::DevToolsAgentHost::DetachAllClients();
2037 }
2038
2039 ///////////////////////////////////////////////////////////////////////////////
2040 // Browser, UI update coalescing and handling (private):
2041
2042 void Browser::UpdateToolbar(bool should_restore_state) {
2043   window_->UpdateToolbar(should_restore_state ?
2044       tab_strip_model_->GetActiveWebContents() : NULL);
2045 }
2046
2047 void Browser::ScheduleUIUpdate(const WebContents* source,
2048                                unsigned changed_flags) {
2049   DCHECK(source);
2050   int index = tab_strip_model_->GetIndexOfWebContents(source);
2051   DCHECK_NE(TabStripModel::kNoTab, index);
2052
2053   // Do some synchronous updates.
2054   if (changed_flags & content::INVALIDATE_TYPE_URL &&
2055       source == tab_strip_model_->GetActiveWebContents()) {
2056     // Only update the URL for the current tab. Note that we do not update
2057     // the navigation commands since those would have already been updated
2058     // synchronously by NavigationStateChanged.
2059     UpdateToolbar(false);
2060     changed_flags &= ~content::INVALIDATE_TYPE_URL;
2061   }
2062   if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
2063     // Update the loading state synchronously. This is so the throbber will
2064     // immediately start/stop, which gives a more snappy feel. We want to do
2065     // this for any tab so they start & stop quickly.
2066     tab_strip_model_->UpdateWebContentsStateAt(
2067         tab_strip_model_->GetIndexOfWebContents(source),
2068         TabStripModelObserver::LOADING_ONLY);
2069     // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
2070     // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
2071     // changed_flags.
2072   }
2073
2074   if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
2075     // To correctly calculate whether the title changed while not loading
2076     // we need to process the update synchronously. This state only matters for
2077     // the TabStripModel, so we notify the TabStripModel now and notify others
2078     // asynchronously.
2079     tab_strip_model_->UpdateWebContentsStateAt(
2080         tab_strip_model_->GetIndexOfWebContents(source),
2081         TabStripModelObserver::TITLE_NOT_LOADING);
2082   }
2083
2084   // If the only updates were synchronously handled above, we're done.
2085   if (changed_flags == 0)
2086     return;
2087
2088   // Save the dirty bits.
2089   scheduled_updates_[source] |= changed_flags;
2090
2091   if (!chrome_updater_factory_.HasWeakPtrs()) {
2092     // No task currently scheduled, start another.
2093     base::MessageLoop::current()->PostDelayedTask(
2094         FROM_HERE,
2095         base::Bind(&Browser::ProcessPendingUIUpdates,
2096                    chrome_updater_factory_.GetWeakPtr()),
2097         base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
2098   }
2099 }
2100
2101 void Browser::ProcessPendingUIUpdates() {
2102 #ifndef NDEBUG
2103   // Validate that all tabs we have pending updates for exist. This is scary
2104   // because the pending list must be kept in sync with any detached or
2105   // deleted tabs.
2106   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2107        i != scheduled_updates_.end(); ++i) {
2108     bool found = false;
2109     for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
2110       if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
2111         found = true;
2112         break;
2113       }
2114     }
2115     DCHECK(found);
2116   }
2117 #endif
2118
2119   chrome_updater_factory_.InvalidateWeakPtrs();
2120
2121   for (UpdateMap::const_iterator i = scheduled_updates_.begin();
2122        i != scheduled_updates_.end(); ++i) {
2123     // Do not dereference |contents|, it may be out-of-date!
2124     const WebContents* contents = i->first;
2125     unsigned flags = i->second;
2126
2127     if (contents == tab_strip_model_->GetActiveWebContents()) {
2128       // Updates that only matter when the tab is selected go here.
2129
2130       // Updating the URL happens synchronously in ScheduleUIUpdate.
2131       if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
2132         GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
2133             tab_strip_model_->GetActiveWebContents())->GetStatusText());
2134       }
2135
2136       if (flags & (content::INVALIDATE_TYPE_TAB |
2137                    content::INVALIDATE_TYPE_TITLE)) {
2138         window_->UpdateTitleBar();
2139       }
2140     }
2141
2142     // Updates that don't depend upon the selected state go here.
2143     if (flags &
2144         (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
2145       tab_strip_model_->UpdateWebContentsStateAt(
2146           tab_strip_model_->GetIndexOfWebContents(contents),
2147           TabStripModelObserver::ALL);
2148     }
2149
2150     // Update the bookmark bar. It may happen that the tab is crashed, and if
2151     // so, the bookmark bar should be hidden.
2152     if (flags & content::INVALIDATE_TYPE_TAB)
2153       UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
2154
2155     // We don't need to process INVALIDATE_STATE, since that's not visible.
2156   }
2157
2158   scheduled_updates_.clear();
2159 }
2160
2161 void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
2162   if (!contents)
2163     return;
2164
2165   UpdateMap::iterator i = scheduled_updates_.find(contents);
2166   if (i != scheduled_updates_.end())
2167     scheduled_updates_.erase(i);
2168 }
2169
2170 ///////////////////////////////////////////////////////////////////////////////
2171 // Browser, Getters for UI (private):
2172
2173 StatusBubble* Browser::GetStatusBubble() {
2174   // In kiosk and exclusive app mode, we want to always hide the status bubble.
2175   if (chrome::IsRunningInAppMode())
2176     return NULL;
2177
2178   return window_ ? window_->GetStatusBubble() : NULL;
2179 }
2180
2181 ///////////////////////////////////////////////////////////////////////////////
2182 // Browser, Session restore functions (private):
2183
2184 void Browser::SyncHistoryWithTabs(int index) {
2185   SessionService* session_service =
2186       SessionServiceFactory::GetForProfileIfExisting(profile());
2187   if (session_service) {
2188     for (int i = index; i < tab_strip_model_->count(); ++i) {
2189       WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
2190       if (web_contents) {
2191         SessionTabHelper* session_tab_helper =
2192             SessionTabHelper::FromWebContents(web_contents);
2193         session_service->SetTabIndexInWindow(
2194             session_id(), session_tab_helper->session_id(), i);
2195         session_service->SetPinnedState(
2196             session_id(),
2197             session_tab_helper->session_id(),
2198             tab_strip_model_->IsTabPinned(i));
2199       }
2200     }
2201   }
2202 }
2203
2204 ///////////////////////////////////////////////////////////////////////////////
2205 // Browser, In-progress download termination handling (private):
2206
2207 bool Browser::CanCloseWithInProgressDownloads() {
2208   // If we've prompted, we need to hear from the user before we
2209   // can close.
2210   if (cancel_download_confirmation_state_ != NOT_PROMPTED)
2211     return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;
2212
2213   int num_downloads_blocking;
2214   Browser::DownloadClosePreventionType dialog_type =
2215       OkToCloseWithInProgressDownloads(&num_downloads_blocking);
2216   if (dialog_type == DOWNLOAD_CLOSE_OK)
2217     return true;
2218
2219   // Closing this window will kill some downloads; prompt to make sure
2220   // that's ok.
2221   cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
2222   window_->ConfirmBrowserCloseWithPendingDownloads(
2223       num_downloads_blocking,
2224       dialog_type,
2225       false,
2226       base::Bind(&Browser::InProgressDownloadResponse,
2227                  weak_factory_.GetWeakPtr()));
2228
2229   // Return false so the browser does not close.  We'll close if the user
2230   // confirms in the dialog.
2231   return false;
2232 }
2233
2234 ///////////////////////////////////////////////////////////////////////////////
2235 // Browser, Assorted utility functions (private):
2236
2237 void Browser::SetAsDelegate(WebContents* web_contents, bool set_delegate) {
2238   Browser* delegate = set_delegate ? this : NULL;
2239   // WebContents...
2240   web_contents->SetDelegate(delegate);
2241
2242   // ...and all the helpers.
2243   BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2244   WebContentsModalDialogManager::FromWebContents(web_contents)->
2245       SetDelegate(delegate);
2246   CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2247   SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2248   SearchTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
2249   if (delegate)
2250     ZoomController::FromWebContents(web_contents)->AddObserver(this);
2251   else
2252     ZoomController::FromWebContents(web_contents)->RemoveObserver(this);
2253   ChromeTranslateClient* chrome_translate_client =
2254       ChromeTranslateClient::FromWebContents(web_contents);
2255   chrome_translate_client->translate_driver().set_observer(
2256       delegate ? delegate->translate_driver_observer_.get() : NULL);
2257 }
2258
2259 void Browser::CloseFrame() {
2260   window_->Close();
2261 }
2262
2263 void Browser::TabDetachedAtImpl(content::WebContents* contents,
2264                                 int index,
2265                                 DetachType type) {
2266   if (type == DETACH_TYPE_DETACH) {
2267     // Save the current location bar state, but only if the tab being detached
2268     // is the selected tab.  Because saving state can conditionally revert the
2269     // location bar, saving the current tab's location bar state to a
2270     // non-selected tab can corrupt both tabs.
2271     if (contents == tab_strip_model_->GetActiveWebContents()) {
2272       LocationBar* location_bar = window()->GetLocationBar();
2273       if (location_bar)
2274         location_bar->SaveStateToContents(contents);
2275     }
2276
2277     if (!tab_strip_model_->closing_all())
2278       SyncHistoryWithTabs(0);
2279   }
2280
2281   SetAsDelegate(contents, false);
2282   RemoveScheduledUpdatesFor(contents);
2283
2284   if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
2285     find_bar_controller_->ChangeWebContents(NULL);
2286   }
2287
2288   // Stop observing search model changes for this tab.
2289   search_delegate_->OnTabDetached(contents);
2290
2291   for (size_t i = 0; i < interstitial_observers_.size(); i++) {
2292     if (interstitial_observers_[i]->web_contents() != contents)
2293       continue;
2294
2295     delete interstitial_observers_[i];
2296     interstitial_observers_.erase(interstitial_observers_.begin() + i);
2297     return;
2298   }
2299 }
2300
2301 bool Browser::ShouldShowLocationBar() const {
2302   // Tabbed browser always show a location bar.
2303   if (is_type_tabbed())
2304     return true;
2305
2306   if (is_app()) {
2307     if (extensions::util::IsStreamlinedHostedAppsEnabled() &&
2308         host_desktop_type() != chrome::HOST_DESKTOP_TYPE_ASH) {
2309       // If streamlined hosted apps are enabled, show the location bar for
2310       // bookmark apps, except on ash which has the toolbar merged into the
2311       // frame.
2312       ExtensionService* service =
2313           extensions::ExtensionSystem::Get(profile_)->extension_service();
2314       const extensions::Extension* extension =
2315           service ? service->GetInstalledExtension(
2316                         web_app::GetExtensionIdFromApplicationName(app_name()))
2317                   : NULL;
2318       return (!extension || extension->from_bookmark()) &&
2319              app_name() != DevToolsWindow::kDevToolsApp;
2320     } else {
2321       return false;
2322     }
2323   }
2324
2325   // Trusted app windows and system windows never show a location bar.
2326   return !is_trusted_source();
2327 }
2328
2329 bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
2330                                         bool check_fullscreen) const {
2331   bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();
2332
2333   unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;
2334
2335   if (is_type_tabbed())
2336     features |= FEATURE_BOOKMARKBAR;
2337
2338   if (!hide_ui_for_fullscreen) {
2339     if (!is_type_tabbed())
2340       features |= FEATURE_TITLEBAR;
2341
2342     if (is_type_tabbed())
2343       features |= FEATURE_TABSTRIP;
2344
2345     if (is_type_tabbed())
2346       features |= FEATURE_TOOLBAR;
2347
2348     if (ShouldShowLocationBar())
2349       features |= FEATURE_LOCATIONBAR;
2350   }
2351   return !!(features & feature);
2352 }
2353
2354 void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
2355   BookmarkBar::State state;
2356   // The bookmark bar is always hidden for Guest Sessions and in fullscreen
2357   // mode, unless on the new tab page.
2358   if (profile_->IsGuestSession()) {
2359     state = BookmarkBar::HIDDEN;
2360   } else if (browser_defaults::bookmarks_enabled &&
2361       profile_->GetPrefs()->GetBoolean(bookmarks::prefs::kShowBookmarkBar) &&
2362       !ShouldHideUIForFullscreen()) {
2363     state = BookmarkBar::SHOW;
2364   } else {
2365     WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
2366     BookmarkTabHelper* bookmark_tab_helper =
2367         web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
2368     if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
2369       state = BookmarkBar::DETACHED;
2370     else
2371       state = BookmarkBar::HIDDEN;
2372   }
2373
2374   if (state == bookmark_bar_state_)
2375     return;
2376
2377   bookmark_bar_state_ = state;
2378
2379   if (!window_)
2380     return;  // This is called from the constructor when window_ is NULL.
2381
2382   if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
2383     // Don't notify BrowserWindow on a tab switch as at the time this is invoked
2384     // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
2385     // end up querying state once they process the tab switch.
2386     return;
2387   }
2388
2389   bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
2390   window_->BookmarkBarStateChanged(shouldAnimate ?
2391       BookmarkBar::ANIMATE_STATE_CHANGE :
2392       BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
2393 }
2394
2395 bool Browser::ShouldHideUIForFullscreen() const {
2396   // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
2397   // keep the controls in a slide-down panel.
2398   return window_ && window_->ShouldHideUIForFullscreen();
2399 }
2400
2401 bool Browser::MaybeCreateBackgroundContents(
2402     int route_id,
2403     WebContents* opener_web_contents,
2404     const base::string16& frame_name,
2405     const GURL& target_url,
2406     const std::string& partition_id,
2407     content::SessionStorageNamespace* session_storage_namespace) {
2408   GURL opener_url = opener_web_contents->GetURL();
2409   ExtensionService* extensions_service =
2410       extensions::ExtensionSystem::Get(profile_)->extension_service();
2411
2412   if (!opener_url.is_valid() ||
2413       frame_name.empty() ||
2414       !extensions_service ||
2415       !extensions_service->is_ready())
2416     return false;
2417
2418   // Only hosted apps have web extents, so this ensures that only hosted apps
2419   // can create BackgroundContents. We don't have to check for background
2420   // permission as that is checked in RenderMessageFilter when the CreateWindow
2421   // message is processed.
2422   const Extension* extension =
2423       extensions_service->extensions()->GetHostedAppByURL(opener_url);
2424   if (!extension)
2425     return false;
2426
2427   // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
2428   BackgroundContentsService* service =
2429       BackgroundContentsServiceFactory::GetForProfile(profile_);
2430   if (!service)
2431     return false;
2432
2433   // Ensure that we're trying to open this from the extension's process.
2434   SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
2435   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
2436   if (!opener_site_instance->GetProcess() ||
2437       !process_map->Contains(
2438           extension->id(), opener_site_instance->GetProcess()->GetID())) {
2439     return false;
2440   }
2441
2442   // Only allow a single background contents per app.
2443   bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
2444   BackgroundContents* existing =
2445       service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
2446   if (existing) {
2447     // For non-scriptable background contents, ignore the request altogether,
2448     // (returning true, so that a regular WebContents isn't created either).
2449     if (!allow_js_access)
2450       return true;
2451     // For scriptable background pages, if one already exists, close it (even
2452     // if it was specified in the manifest).
2453     delete existing;
2454   }
2455
2456   // If script access is not allowed, create the the background contents in a
2457   // new SiteInstance, so that a separate process is used.
2458   scoped_refptr<content::SiteInstance> site_instance =
2459       allow_js_access ?
2460       opener_site_instance :
2461       content::SiteInstance::Create(opener_web_contents->GetBrowserContext());
2462
2463   // Passed all the checks, so this should be created as a BackgroundContents.
2464   BackgroundContents* contents =
2465       service->CreateBackgroundContents(site_instance.get(),
2466                                         route_id,
2467                                         profile_,
2468                                         frame_name,
2469                                         base::ASCIIToUTF16(extension->id()),
2470                                         partition_id,
2471                                         session_storage_namespace);
2472
2473   // When a separate process is used, the original renderer cannot access the
2474   // new window later, thus we need to navigate the window now.
2475   if (contents && !allow_js_access) {
2476     contents->web_contents()->GetController().LoadURL(
2477         target_url,
2478         content::Referrer(),
2479         content::PAGE_TRANSITION_LINK,
2480         std::string());  // No extra headers.
2481   }
2482
2483   return contents != NULL;
2484 }