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

media/blink/webaudiosourceprovider_impl.cc

Index: media/blink/webaudiosourceprovider_impl.cc
diff --git a/media/blink/webaudiosourceprovider_impl.cc b/media/blink/webaudiosourceprovider_impl.cc
index 8ca3d0bff5762ed58c954b1d27bbc56601fe63f3..6637719b0a6980ec34b324f9a75c52454e0c8d27 100644
--- a/media/blink/webaudiosourceprovider_impl.cc
+++ b/media/blink/webaudiosourceprovider_impl.cc
@@ -163,18 +163,6 @@
   return true;
 }
 
-void WebAudioSourceProviderImpl::SwitchOutputDevice(
-    const std::string& device_id,
-    const GURL& security_origin,
-    const SwitchOutputDeviceCB& callback) {
-  base::AutoLock auto_lock(sink_lock_);
-  if (!client_) {
-    sink_->SwitchOutputDevice(device_id, security_origin, callback);
-  } else {
-    callback.Run(SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_SUPPORTED);
-  }
-}
-
 void WebAudioSourceProviderImpl::Initialize(
     const AudioParameters& params,
     RenderCallback* renderer) {