media: Cleanup class/struct forward declarations

media/gpu/avda_shared_state.h

 // Copyright 2015 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 MEDIA_GPU_AVDA_SHARED_STATE_H_
 #define MEDIA_GPU_AVDA_SHARED_STATE_H_
 
 #include "base/synchronization/waitable_event.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "media/base/android/media_codec_bridge.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_image.h"
 #include "ui/gl/gl_surface.h"
 
 namespace gl {
 class SurfaceTexture;
 }
 
 namespace media {
 
-class AVDACodecImage;
-
 // Shared state to allow communication between the AVDA and the
 // GLImages that configure GL for drawing the frames.
 class AVDASharedState : public base::RefCounted<AVDASharedState> {
  public:
   AVDASharedState();
 
   GLuint surface_texture_service_id() const {
     return surface_texture_service_id_;
   }
 
@@ skipping 71 matching lines @@
 
   class OnFrameAvailableHandler;
   scoped_refptr<OnFrameAvailableHandler> on_frame_available_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(AVDASharedState);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_AVDA_SHARED_STATE_H_