Load CMA backend from shared library

chromecast/media/cma/pipeline/video_pipeline_impl.h

 // Copyright 2014 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 CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_
 #define CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "chromecast/media/cma/pipeline/video_pipeline.h"
 #include "chromecast/media/cma/pipeline/video_pipeline_client.h"
 #include "chromecast/public/media/stream_id.h"
 
-namespace gfx {
-class Size;
-}
-
 namespace media {
 class AudioDecoderConfig;
 class VideoDecoderConfig;
 }
 
 namespace chromecast {
+struct Size;
 namespace media {
 class AvPipelineImpl;
 class BrowserCdmCast;
 class BufferingState;
 class CodedFrameProvider;
 class VideoPipelineDevice;
 
 class VideoPipelineImpl : public VideoPipeline {
  public:
   // |buffering_controller| can be NULL.
@@ skipping 16 matching lines @@
   void Flush(const ::media::PipelineStatusCB& status_cb);
   void Stop();
 
   // Update the playback statistics for this video stream.
   void UpdateStatistics();
 
   // VideoPipeline implementation.
   void SetClient(const VideoPipelineClient& client) override;
 
  private:
+  class DeviceClientImpl;
+  friend class DeviceClientImpl;
+
   void OnFlushDone(const ::media::PipelineStatusCB& status_cb);
   void OnUpdateConfig(StreamId id,
                       const ::media::AudioDecoderConfig& audio_config,
                       const ::media::VideoDecoderConfig& video_config);
-  void OnNaturalSizeChanged(const gfx::Size& size);
+  void OnNaturalSizeChanged(const Size& size);
 
   VideoPipelineDevice* video_device_;
 
   scoped_ptr<AvPipelineImpl> av_pipeline_impl_;
   VideoPipelineClient video_client_;
 
   ::media::PipelineStatistics previous_stats_;
 
   base::WeakPtr<VideoPipelineImpl> weak_this_;
   base::WeakPtrFactory<VideoPipelineImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoPipelineImpl);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_CMA_BASE_VIDEO_PIPELINE_IMPL_H_