Support configuring number of audio buffers in MediaStream Pepper API.

ppapi/proxy/media_stream_audio_track_resource.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 PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
 #define PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_
 
 #include <map>
+#include <string>

[Peng, 2014/05/26 14:48:49]

Is it necessary?

[thembrown, 2014/05/27 10:36:02]

It's transitively included anyway. Just added it because cpplint.py complained
about it (used in constructor).

[Peng, 2014/05/27 14:35:49]

I see.

 
 #include "base/memory/ref_counted.h"
 #include "ppapi/proxy/media_stream_track_resource_base.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/thunk/ppb_media_stream_audio_track_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 class AudioBufferResource;
@@ skipping 27 matching lines @@
   virtual void Close() OVERRIDE;
 
   // MediaStreamBufferManager::Delegate overrides:
   virtual void OnNewBufferEnqueued() OVERRIDE;
 
  private:
   PP_Resource GetAudioBuffer();
 
   void ReleaseBuffers();
 
+  // IPC message handlers.
+  void OnPluginMsgConfigureReply(const ResourceMessageReplyParams& params);
+
   // Allocated buffer resources by |GetBuffer()|.
   typedef std::map<PP_Resource, scoped_refptr<AudioBufferResource> > BufferMap;
   BufferMap buffers_;
 
   PP_Resource* get_buffer_output_;
 
+  scoped_refptr<TrackedCallback> configure_callback_;
+
   scoped_refptr<TrackedCallback> get_buffer_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioTrackResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_MEDIA_STREAM_AUDIO_TRACK_RESOURCE_H_