| Index: chrome/browser/ui/gtk/browser_window_gtk.cc | 
| diff --git a/chrome/browser/ui/gtk/browser_window_gtk.cc b/chrome/browser/ui/gtk/browser_window_gtk.cc | 
| index 92a4ba36c220f82610bf06fd54a87423bf73ed41..755521d16773c3c73eb1c2309d3cc533e1b771c3 100644 | 
| --- a/chrome/browser/ui/gtk/browser_window_gtk.cc | 
| +++ b/chrome/browser/ui/gtk/browser_window_gtk.cc | 
| @@ -1185,26 +1185,22 @@ void BrowserWindowGtk::ConfirmBrowserCloseWithPendingDownloads() { | 
| void BrowserWindowGtk::Observe(int type, | 
| const content::NotificationSource& source, | 
| const content::NotificationDetails& details) { | 
| -  switch (type) { | 
| -    case chrome::NOTIFICATION_PREF_CHANGED: { | 
| -      std::string* pref_name = content::Details<std::string>(details).ptr(); | 
| -      if (*pref_name == prefs::kUseCustomChromeFrame) { | 
| -        UpdateCustomFrame(); | 
| -        ui::SetHideTitlebarWhenMaximizedProperty( | 
| -            ui::GetX11WindowFromGtkWidget(GTK_WIDGET(window_)), | 
| -            UseCustomFrame() ? ui::HIDE_TITLEBAR_WHEN_MAXIMIZED | 
| -                             : ui::SHOW_TITLEBAR_WHEN_MAXIMIZED); | 
| -      } else { | 
| -        NOTREACHED() << "Got pref change notification we didn't register for!"; | 
| -      } | 
| -      break; | 
| -    } | 
| -    case chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED: | 
| -      // The profile avatar icon may have changed. | 
| -      gtk_util::SetWindowIcon(window_, browser_->profile()); | 
| -      break; | 
| -    default: | 
| -      break; | 
| +  DCHECK_EQ(chrome::NOTIFICATION_PROFILE_CACHED_INFO_CHANGED, type); | 
| +  // The profile avatar icon may have changed. | 
| +  gtk_util::SetWindowIcon(window_, browser_->profile()); | 
| +} | 
| + | 
| +void BrowserWindowGtk::OnPreferenceChanged(PrefServiceBase* service, | 
| +                                           const std::string& pref_name) { | 
| +  if (pref_name == prefs::kUseCustomChromeFrame) { | 
| +    UpdateCustomFrame(); | 
| +    ui::SetHideTitlebarWhenMaximizedProperty( | 
| +        ui::GetX11WindowFromGtkWidget(GTK_WIDGET(window_)), | 
| +        UseCustomFrame() ? | 
| +            ui::HIDE_TITLEBAR_WHEN_MAXIMIZED : | 
| +            ui::SHOW_TITLEBAR_WHEN_MAXIMIZED); | 
| +  } else { | 
| +    NOTREACHED() << "Got pref change notification we didn't register for!"; | 
| } | 
| } | 
|  | 
|  |