content: Cleanup class/struct forward declarations

content/browser/media/android/browser_media_player_manager.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 10 matching lines @@
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gl/android/scoped_java_surface.h"
 #include "url/gurl.h"
 
 struct MediaPlayerHostMsg_Initialize_Params;
 
 namespace content {
 #if !defined(USE_AURA)
 class ContentViewCore;
 #endif
-class ExternalVideoSurfaceContainer;
 class RenderFrameHost;
 class WebContents;
 
 // This class manages all the MediaPlayerAndroid objects.
 // It receives control operations from the the render process, and forwards
 // them to corresponding MediaPlayerAndroid object. Callbacks from
 // MediaPlayerAndroid objects are converted to IPCs and then sent to the render
 // process.
 class CONTENT_EXPORT BrowserMediaPlayerManager
     : public media::MediaPlayerManager,
@@ skipping 165 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<BrowserMediaPlayerManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMediaPlayerManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_