media: Cleanup class/struct forward declarations

media/renderers/gpu_video_accelerator_factories.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 MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 #define MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "media/video/video_decode_accelerator.h"
 #include "media/video/video_encode_accelerator.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 class SharedMemory;
 }
 
 namespace gfx {
-class Rect;
 class Size;
 }
 
 namespace gpu {
 struct SyncToken;
 };
 
 namespace media {
 
 class VideoDecodeAccelerator;
@@ skipping 85 matching lines @@
       GetVideoEncodeAcceleratorSupportedProfiles() = 0;
 
  protected:
   friend class base::RefCounted<GpuVideoAcceleratorFactories>;
   virtual ~GpuVideoAcceleratorFactories() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_GPU_VIDEO_ACCELERATOR_FACTORIES_H_