Implement AudioRendererMixerInput::CurrentThreadIsRenderingThread().

media/base/audio_renderer_mixer.cc

 // Copyright (c) 2012 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/base/audio_renderer_mixer.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 100 matching lines @@
 
   // An error callback should always exist when called.
   NOTREACHED();
 }
 
 OutputDeviceInfo AudioRendererMixer::GetOutputDeviceInfo() {
   DVLOG(1) << __FUNCTION__;
   return audio_sink_->GetOutputDeviceInfo();
 }
 
+bool AudioRendererMixer::CurrentThreadIsRenderingThread() {
+  return audio_sink_->CurrentThreadIsRenderingThread();
+}
+
 int AudioRendererMixer::Render(AudioBus* audio_bus,
                                uint32_t frames_delayed,
                                uint32_t frames_skipped) {
   base::AutoLock auto_lock(lock_);
 
   // If there are no mixer inputs and we haven't seen one for a while, pause the
   // sink to avoid wasting resources when media elements are present but remain
   // in the pause state.
   const base::TimeTicks now = base::TimeTicks::Now();
   if (!master_converter_.empty()) {
     last_play_time_ = now;
   } else if (now - last_play_time_ >= pause_delay_ && playing_) {
     audio_sink_->Pause();
     playing_ = false;
   }
 
   master_converter_.ConvertWithDelay(frames_delayed, audio_bus);
   return audio_bus->frames();
 }
 
 void AudioRendererMixer::OnRenderError() {
   // Call each mixer input and signal an error.
   base::AutoLock auto_lock(lock_);
   for (const auto& cb : error_callbacks_)
     cb.Run();
 }
 
 }  // namespace media