Motown: Delay audio track completion of Prime requests until a packet arrives.

services/media/audio/audio_pipe.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_PIPE_H_
 #define SERVICES_MEDIA_AUDIO_AUDIO_PIPE_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 63 matching lines @@
     std::vector<Region> regions_;
     int64_t start_pts_;
     int64_t end_pts_;
   };
 
   AudioPipe(AudioTrackImpl* owner, AudioServerImpl* server);
   ~AudioPipe() override;
 
  protected:
   void OnPacketReceived(MediaPacketStatePtr state) override;
+  void OnPrimeRequested(const PrimeCallback& cbk) override;
   bool OnFlushRequested(const FlushCallback& cbk) override;
 
  private:
   AudioTrackImpl* owner_;
   AudioServerImpl* server_;
 
   // State used for timestamp interpolation
   bool next_pts_known_ = 0;
   int64_t next_pts_;
+
+  PrimeCallback prime_callback_;
 };
 
 }  // namespace audio
 }  // namespace media
 }  // namespace mojo
 
 #endif  // SERVICES_MEDIA_AUDIO_AUDIO_PIPE_H_