Add audible support to the copresence API.

components/copresence/handlers/audio/audio_directive_handler.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 COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_HANDLER_
 #define COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_HANDLER_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 38 matching lines @@
 
  private:
   void StopPlayback();
   void StopRecording();
 
   // Execute the next active transmit instruction.
   void ExecuteNextTransmit();
   // Execute the next active receive instruction.
   void ExecuteNextReceive();
 
-  AudioDirectiveList directive_list_;
+  AudioDirectiveList directive_list_inaudible_;
+  AudioDirectiveList directive_list_audible_;
 
   // The next two pointers are self-deleting. When we call Finalize on them,
   // they clean themselves up on the Audio thread.
   AudioPlayer* player_;
   AudioRecorder* recorder_;
 
   AudioRecorder::DecodeSamplesCallback decode_cb_;
 
   base::OneShotTimer<AudioDirectiveHandler> stop_playback_timer_;
   base::OneShotTimer<AudioDirectiveHandler> stop_recording_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDirectiveHandler);
 };
 
 }  // namespace copresence
 
 #endif  // COMPONENTS_COPRESENCE_HANDLERS_AUDIO_AUDIO_DIRECTIVE_HANDLER_