Change audio render thread checking to use new AudioRendererSink::BelongsToRendererThread()

media/base/mock_audio_renderer_sink.h

 // Copyright (c) 2012 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 MEDIA_BASE_MOCK_AUDIO_RENDERER_SINK_H_
 #define MEDIA_BASE_MOCK_AUDIO_RENDERER_SINK_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 11 matching lines @@
                         OutputDeviceStatus device_status);
   MockAudioRendererSink(const std::string& device_id,
                         OutputDeviceStatus device_status,
                         const AudioParameters& device_output_params);
 
   MOCK_METHOD0(Start, void());
   MOCK_METHOD0(Stop, void());
   MOCK_METHOD0(Pause, void());
   MOCK_METHOD0(Play, void());
   MOCK_METHOD1(SetVolume, bool(double volume));
+  MOCK_METHOD0(CurrentThreadIsRenderingThread, bool());
 
   OutputDeviceInfo GetOutputDeviceInfo();
 
   void SwitchOutputDevice(const std::string& device_id,
                           const url::Origin& security_origin,
                           const OutputDeviceStatusCB& callback) override;
   void Initialize(const AudioParameters& params,
                   RenderCallback* renderer) override;
   AudioRendererSink::RenderCallback* callback() { return callback_; }
 
  protected:
   ~MockAudioRendererSink() override;
 
  private:
   RenderCallback* callback_;
   OutputDeviceInfo output_device_info_;
 
   DISALLOW_COPY_AND_ASSIGN(MockAudioRendererSink);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MOCK_AUDIO_RENDERER_SINK_H_