Motown: Change media type (stream type) representation

services/media/audio/audio_track_impl.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 SERVICES_MEDIA_AUDIO_AUDIO_TRACK_IMPL_H_
 #define SERVICES_MEDIA_AUDIO_AUDIO_TRACK_IMPL_H_
 
 #include <deque>
 #include <set>
 
@@ skipping 32 matching lines @@
   // important for the mixing process.
   void SnapshotRateTrans(LinearTransform* out, uint32_t* generation = nullptr) {
     rate_control_.SnapshotCurrentTransform(out, generation);
   }
 
   const LinearTransform::Ratio& FractionalFrameToMediaTimeRatio() const {
     return frame_to_media_ratio_;
   }
 
   uint32_t BytesPerFrame() const { return bytes_per_frame_; }
-  const LpcmMediaTypeDetailsPtr& Format() const { return format_; }
+  const AudioMediaTypeDetailsPtr& Format() const { return format_; }
   float DbGain() const { return db_gain_; }
 
  private:
   friend class AudioPipe;
 
   AudioTrackImpl(InterfaceRequest<AudioTrack> track,
                  AudioServerImpl* owner);
 
   // Implementation of AudioTrack interface.
   void Describe(const DescribeCallback& cbk) override;
@@ skipping 12 matching lines @@
   void OnPacketReceived(AudioPipe::AudioPacketRefPtr packet);
   bool OnFlushRequested(const MediaConsumer::FlushCallback& cbk);
 
   AudioTrackImplWeakPtr     weak_this_;
   AudioServerImpl*          owner_;
   Binding<AudioTrack>       binding_;
   AudioPipe                 pipe_;
   RateControlBase           rate_control_;
   LinearTransform::Ratio    frame_to_media_ratio_;
   uint32_t                  bytes_per_frame_ = 1;
-  LpcmMediaTypeDetailsPtr   format_;
+  AudioMediaTypeDetailsPtr  format_;
   AudioTrackToOutputLinkSet outputs_;
   float                     db_gain_ = 0.0;
 };
 
 }  // namespace audio
 }  // namespace media
 }  // namespace mojo
 
 #endif  // SERVICES_MEDIA_AUDIO_AUDIO_TRACK_IMPL_H_