Introduce AudioRendererSink::IsOptimizedForHardwareParameters

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 4cace4314b4203352d45914770eafa38930597a3..e99053df435137059f4f209d526a9c4b97a6c6ef 100644
--- a/media/blink/webaudiosourceprovider_impl.cc
+++ b/media/blink/webaudiosourceprovider_impl.cc
@@ -252,10 +252,20 @@ bool WebAudioSourceProviderImpl::SetVolume(double volume) {
   return true;
 }
 
-OutputDeviceInfo WebAudioSourceProviderImpl::GetOutputDeviceInfo() {
+OutputDeviceInfo WebAudioSourceProviderImpl::GetOutputDeviceInfo(
+    const AudioParameters& preferred_params) {
   base::AutoLock auto_lock(sink_lock_);
-  return sink_ ? sink_->GetOutputDeviceInfo()
-               : OutputDeviceInfo(OUTPUT_DEVICE_STATUS_ERROR_NOT_FOUND);
+
+  if (!sink_) {
+    return OutputDeviceInfo(OUTPUT_DEVICE_STATUS_ERROR_NOT_FOUND);
+  }
+
+  OutputDeviceInfo sink_info = sink_->GetOutputDeviceInfo();
+  if (client_) {
+    return OutputDeviceInfo(sink_info.device_id(), sink_info.device_status(),
+                            preferred_params);

[o1ka, 2017/04/28 09:57:18]

What if preferred_params are empty/invalid?

+  }
+  return sink_info;
 }
 
 bool WebAudioSourceProviderImpl::CurrentThreadIsRenderingThread() {