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

media/audio/audio_output_device.cc

Index: media/audio/audio_output_device.cc
diff --git a/media/audio/audio_output_device.cc b/media/audio/audio_output_device.cc
index a3effebfb43af118500197a6eed9a48093563f7d..0d04482a752a86a2e13bb9cc39ad006064b13669 100644
--- a/media/audio/audio_output_device.cc
+++ b/media/audio/audio_output_device.cc
@@ -150,6 +150,10 @@ OutputDeviceInfo AudioOutputDevice::GetOutputDeviceInfo() {
                           device_status_, output_params_);
 }
 
+bool AudioOutputDevice::BelongsToRenderingThread() {
+  return audio_thread_.BelongsToRenderingThread();
+}
+
 void AudioOutputDevice::RequestDeviceAuthorizationOnIOThread() {
   DCHECK(task_runner()->BelongsToCurrentThread());
   DCHECK_EQ(state_, IDLE);