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

media/base/fake_audio_renderer_sink.cc

Index: media/base/fake_audio_renderer_sink.cc
diff --git a/media/base/fake_audio_renderer_sink.cc b/media/base/fake_audio_renderer_sink.cc
index 4c4233b5e08a25888fe3edc4655e05651dfde561..d42db6de1b9a7eba16f42c4417c56aa218112576 100644
--- a/media/base/fake_audio_renderer_sink.cc
+++ b/media/base/fake_audio_renderer_sink.cc
@@ -4,10 +4,7 @@
 
 #include "media/base/fake_audio_renderer_sink.h"
 
-#include "base/bind.h"
-#include "base/location.h"
 #include "base/logging.h"
-#include "base/single_thread_task_runner.h"
 
 namespace media {
 
@@ -55,13 +52,6 @@
   return true;
 }
 
-void FakeAudioRendererSink::SwitchOutputDevice(
-    const std::string& device_id,
-    const GURL& security_origin,
-    const SwitchOutputDeviceCB& callback) {
-  callback.Run(SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS);
-}
-
 bool FakeAudioRendererSink::Render(AudioBus* dest, int audio_delay_milliseconds,
                                    int* frames_written) {
   if (state_ != kPlaying)