Add support for the audio-output-device switching IPC mechanism to the renderer lower layers (media…

media/audio/audio_output_stream_sink.cc

Index: media/audio/audio_output_stream_sink.cc
diff --git a/media/audio/audio_output_stream_sink.cc b/media/audio/audio_output_stream_sink.cc
index e233e994a1503ffd02aaba539c5c50bad113bcac..e290e0f5bd9ba50cde3bc95f90e100d80aa81029 100644
--- a/media/audio/audio_output_stream_sink.cc
+++ b/media/audio/audio_output_stream_sink.cc
@@ -57,7 +57,14 @@ bool AudioOutputStreamSink::SetVolume(double volume) {
   audio_task_runner_->PostTask(
       FROM_HERE, base::Bind(&AudioOutputStreamSink::DoSetVolume, this, volume));
   return true;
-};
+}
+
+void AudioOutputStreamSink::SwitchOutputDevice(
+    const std::string& device_id,
+    const GURL& security_origin,
+    const SwitchOutputDeviceCB& callback) {
+  callback.Run(SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_SUPPORTED);
+}
 
 int AudioOutputStreamSink::OnMoreData(AudioBus* dest,
                                       uint32 total_bytes_delay) {