content: Cleanup class/struct forward declarations

content/renderer/media/android/renderer_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_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_PLAYER_MANAGER_H_
 #define CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_PLAYER_MANAGER_H_
 
 #include <map>
 #include <string>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "media/base/android/media_player_android.h"
 #include "media/blink/renderer_media_player_interface.h"
 #include "url/gurl.h"
 
-namespace blink {
-class WebFrame;
-}
-
-namespace gfx {
-class RectF;
-}
-
-struct MediaPlayerHostMsg_Initialize_Params;
-
 namespace content {
 class WebMediaPlayerAndroid;
 
 // Class for managing all the WebMediaPlayerAndroid objects in the same
 // RenderFrame.
 class RendererMediaPlayerManager :
       public RenderFrameObserver,
       public media::RendererMediaPlayerManagerInterface {
  public:
   // Constructs a RendererMediaPlayerManager object for the |render_frame|.
@@ skipping 89 matching lines @@
   std::map<int, media::RendererMediaPlayerInterface*> media_players_;
 
   int next_media_player_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererMediaPlayerManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_PLAYER_MANAGER_H_