Add abstractions that let embedders drive tests of WebContents.

chrome/browser/ui/gtk/browser_titlebar.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // A helper class that contains the gtk widgets that make up the titlebar.  The
 // titlebar consists of the tabstrip and if the custom chrome frame is turned
 // on, it includes the taller titlebar and minimize, restore, maximize, and
 // close buttons.
 
 #ifndef CHROME_BROWSER_UI_GTK_BROWSER_TITLEBAR_H_
@@ skipping 10 matching lines @@
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/base/x/active_window_watcher_x_observer.h"
 
 class AvatarMenuButtonGtk;
 class BrowserWindowGtk;
 class CustomDrawButton;
 class ThemeServiceGtk;
 class MenuGtk;
 class PopupPageMenuModel;
-class TabContents;
 
 namespace content {
 class WebContents;
 }
 
 class BrowserTitlebar : public content::NotificationObserver,
                         public ui::ActiveWindowWatcherXObserver,
                         public ui::SimpleMenuModel::Delegate {
  public:
   // A default button order string for when we aren't asking gconf for the
@@ skipping 248 matching lines @@
   // The avatar button.
   scoped_ptr<AvatarMenuButtonGtk> avatar_button_;
 
   // Theme provider for building buttons.
   ThemeServiceGtk* theme_service_;
 
   content::NotificationRegistrar registrar_;
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_BROWSER_TITLEBAR_H_