Introduce AudioRendererSink::IsOptimizedForHardwareParameters

media/renderers/audio_renderer_impl.h

 // 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.
 
 // Audio rendering unit utilizing an AudioRendererSink to output data.
 //
 // This class lives inside three threads during it's lifetime, namely:
 // 1. Render thread
 //    Where the object is created.
 // 2. Media thread (provided via constructor)
@@ skipping 201 matching lines @@
 
   // The sink (destination) for rendered audio. |sink_| must only be accessed
   // on |task_runner_|. |sink_| must never be called under |lock_| or else we
   // may deadlock between |task_runner_| and the audio callback thread.
   scoped_refptr<media::AudioRendererSink> sink_;
 
   std::unique_ptr<AudioBufferStream> audio_buffer_stream_;
 
   MediaLog* media_log_;
 
-  // Cached copy of hardware params from |sink_|.
+  // Cached copy of audio params that the renderer is initialized with.
   AudioParameters audio_parameters_;
 
   RendererClient* client_;
 
   // Callback provided during Initialize().
   PipelineStatusCB init_cb_;
 
   // Callback provided to Flush().
   base::Closure flush_cb_;
 
@@ skipping 75 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<AudioRendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_AUDIO_RENDERER_IMPL_H_