[Chromecast] Upgrade to new CMA backend API

chromecast/media/audio/cast_audio_output_stream.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 CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_OUTPUT_STREAM_H_
 #define CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_OUTPUT_STREAM_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
@@ skipping 21 matching lines @@
   void Close() override;
   void Start(AudioSourceCallback* source_callback) override;
   void Stop() override;
   void SetVolume(double volume) override;
   void GetVolume(double* volume) override;
 
  private:
   class Backend;
 
   void OnClosed();
-  void PushFrame();
-  void OnPushFrameComplete(bool success);
+  void PushBuffer();
+  void OnPushBufferComplete(bool success);
 
   const ::media::AudioParameters audio_params_;
   CastAudioManager* const audio_manager_;
 
   double volume_;
   AudioSourceCallback* source_callback_;
   scoped_ptr<::media::AudioBus> audio_bus_;
   scoped_refptr<media::DecoderBufferBase> decoder_buffer_;
   scoped_ptr<Backend> backend_;
   const base::TimeDelta buffer_duration_;
   bool push_in_progress_;
   base::TimeTicks next_push_time_;
 
   scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> backend_task_runner_;
 
   base::WeakPtrFactory<CastAudioOutputStream> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(CastAudioOutputStream);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_OUTPUT_STREAM_H_