Forward the number of skipped frames by the OS in audio playout.

content/browser/media/capture/web_contents_audio_muter.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 "content/browser/media/capture/web_contents_audio_muter.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 31 matching lines @@
   }
   void Stop() override { worker_.Stop(); }
   void SetVolume(double volume) override {}
   void GetVolume(double* volume) override { *volume = 0; }
   void Close() override { delete this; }
 
  private:
   ~AudioDiscarder() override {}
 
   void FetchAudioData(AudioSourceCallback* callback) {
-    callback->OnMoreData(audio_bus_.get(), 0);
+    callback->OnMoreData(audio_bus_.get(), 0, 0);
   }
 
   // Calls FetchAudioData() at regular intervals and discards the data.
   media::FakeAudioWorker worker_;
   scoped_ptr<media::AudioBus> audio_bus_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioDiscarder);
 };
 
 }  // namespace
@@ skipping 83 matching lines @@
   is_muting_ = false;
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&AudioMirroringManager::StopMirroring,
                  base::Unretained(AudioMirroringManager::GetInstance()),
                  destination_));
 }
 
 }  // namespace content