Add IsSupportedBitstreamAudioCodec() function in MediaClient.

content/public/renderer/content_renderer_client.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.
 
 #ifndef CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 257 matching lines @@
   // TODO(chcunningham): Refactor this to a proper change "observer" API that is
   // less fragile (don't assume AddSupportedKeySystems has just one caller).
   virtual bool IsKeySystemsUpdateNeeded();
 
   // Allows embedder to describe customized audio capabilities.
   virtual bool IsSupportedAudioConfig(const media::AudioConfig& config);
 
   // Allows embedder to describe customized video capabilities.
   virtual bool IsSupportedVideoConfig(const media::VideoConfig& config);
 
+  // Return true if the bitstream format |codec| is supported by the audio sink.
+  virtual bool IsSupportedBistreamAudioCodec(media::AudioCodec codec);

[halliwell, 2017/06/05 19:06:33]

Bistream => Bitstream ?

+
   // Returns true if we should report a detailed message (including a stack
   // trace) for console [logs|errors|exceptions]. |source| is the WebKit-
   // reported source for the error; this can point to a page or a script,
   // and can be external or internal.
   virtual bool ShouldReportDetailedMessageForSource(
       const base::string16& source) const;
 
   // Returns true if we should gather stats during resource loads as if the
   // cross-site document blocking policy were enabled. Does not actually block
   // any pages.
@@ skipping 77 matching lines @@
   virtual std::unique_ptr<base::TaskScheduler::InitParams>
   GetTaskSchedulerInitParams();
 
   // Returns true if the media pipeline can be suspended, or false otherwise.
   virtual bool AllowMediaSuspend();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_