Support (E)AC3 passthrough

content/renderer/media/render_media_client.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_RENDER_MEDIA_CLIENT_H_
 #define CONTENT_RENDERER_MEDIA_RENDER_MEDIA_CLIENT_H_
 
 #include <memory>
 
 #include "base/lazy_instance.h"
@@ skipping 17 matching lines @@
   void AddKeySystemsInfoForUMA(
       std::vector<media::KeySystemInfoForUMA>* key_systems_info_for_uma) final;
   bool IsKeySystemsUpdateNeeded() final;
   void AddSupportedKeySystems(
       std::vector<std::unique_ptr<media::KeySystemProperties>>*
           key_systems_properties) final;
   void RecordRapporURL(const std::string& metric, const GURL& url) final;
   bool IsSupportedVideoConfig(media::VideoCodec codec,
                               media::VideoCodecProfile profile,
                               int level) override;
+  bool IsPassthroughAudioSupported(::media::AudioCodec codec) override;
 
   void SetTickClockForTesting(std::unique_ptr<base::TickClock> tick_clock);
 
  private:
   friend struct base::DefaultLazyInstanceTraits<RenderMediaClient>;
 
   RenderMediaClient();
   ~RenderMediaClient() override;
 
   // Makes sure all methods are called from the same thread.
@@ skipping 15 matching lines @@
 
 #if defined(UNIT_TEST)
 // Helper function to access the RenderMediaClient instance. Used only by unit
 // tests.
 CONTENT_EXPORT RenderMediaClient* GetRenderMediaClientInstanceForTesting();
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDER_MEDIA_CLIENT_H_