Caching AudioOutputDevice instances in mixer manager

media/blink/webaudiosourceprovider_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/blink/webaudiosourceprovider_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 184 matching lines @@
 bool WebAudioSourceProviderImpl::SetVolume(double volume) {
   base::AutoLock auto_lock(sink_lock_);
   volume_ = volume;
   if (!client_)
     sink_->SetVolume(volume);
   return true;
 }
 
 media::OutputDeviceInfo WebAudioSourceProviderImpl::GetOutputDeviceInfo() {
   base::AutoLock auto_lock(sink_lock_);
-  return client_ ? media::OutputDeviceInfo() : sink_->GetOutputDeviceInfo();
+  return sink_->GetOutputDeviceInfo();
 }
 
 void WebAudioSourceProviderImpl::SwitchOutputDevice(
     const std::string& device_id,
     const url::Origin& security_origin,
     const OutputDeviceStatusCB& callback) {
   base::AutoLock auto_lock(sink_lock_);
   if (client_)
     callback.Run(media::OUTPUT_DEVICE_STATUS_ERROR_INTERNAL);
   else
@@ skipping 54 matching lines @@
   }
 
   return num_rendered_frames;
 }
 
 void WebAudioSourceProviderImpl::TeeFilter::OnRenderError() {
   renderer_->OnRenderError();
 }
 
 }  // namespace media