Support configuring the audio buffer duration in the Pepper MediaStream API.

ppapi/proxy/media_stream_audio_track_resource.cc

 // 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.
 
 #include "ppapi/proxy/media_stream_audio_track_resource.h"
 
 #include "ppapi/proxy/audio_buffer_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/media_stream_audio_track_shared.h"
 #include "ppapi/shared_impl/media_stream_buffer.h"
@@ skipping 44 matching lines @@
   if (!buffers_.empty())
     return PP_ERROR_INPROGRESS;
 
   MediaStreamAudioTrackShared::Attributes attributes;
   int i = 0;
   for (; attrib_list[i] != PP_MEDIASTREAMAUDIOTRACK_ATTRIB_NONE; i += 2) {
     switch (attrib_list[i]) {
       case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_BUFFERS:
         attributes.buffers = attrib_list[i + 1];
         break;
+      case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_DURATION:
+        attributes.duration = attrib_list[i + 1];
+        break;
       case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_SAMPLE_RATE:
       case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_SAMPLE_SIZE:
       case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_CHANNELS:
-      case PP_MEDIASTREAMAUDIOTRACK_ATTRIB_DURATION:
         return PP_ERROR_NOTSUPPORTED;
       default:
         return PP_ERROR_BADARGUMENT;
     }
   }
 
   if (!MediaStreamAudioTrackShared::VerifyAttributes(attributes))
     return PP_ERROR_BADARGUMENT;
 
   configure_callback_ = callback;
@@ skipping 109 matching lines @@
     const ResourceMessageReplyParams& params) {
   if (TrackedCallback::IsPending(configure_callback_)) {
     scoped_refptr<TrackedCallback> callback;
     callback.swap(configure_callback_);
     callback->Run(params.result());
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi