Revert of Add support for the audio-output-device switching IPC mechanism to the renderer lower...

media/base/mock_audio_renderer_sink.h

Index: media/base/mock_audio_renderer_sink.h
diff --git a/media/base/mock_audio_renderer_sink.h b/media/base/mock_audio_renderer_sink.h
index b813257601a9921fcf5275521f94b5e7e7b1bc5c..3a85d528a033a779827c0217e691c145ae230df6 100644
--- a/media/base/mock_audio_renderer_sink.h
+++ b/media/base/mock_audio_renderer_sink.h
@@ -4,8 +4,6 @@
 
 #ifndef MEDIA_BASE_MOCK_AUDIO_RENDERER_SINK_H_
 #define MEDIA_BASE_MOCK_AUDIO_RENDERER_SINK_H_
-
-#include <string>
 
 #include "media/audio/audio_parameters.h"
 #include "media/base/audio_renderer_sink.h"
@@ -22,12 +20,6 @@
   MOCK_METHOD0(Pause, void());
   MOCK_METHOD0(Play, void());
   MOCK_METHOD1(SetVolume, bool(double volume));
-  MOCK_METHOD0(SwitchOutputDevice, void());
-  void SwitchOutputDevice(const std::string&,
-                          const GURL& security_origin,
-                          const SwitchOutputDeviceCB& callback) override {
-    SwitchOutputDevice();
-  }
 
   void Initialize(const AudioParameters& params,
                   RenderCallback* renderer) override;