Add IsSupportedBitstreamAudioCodec() function in MediaClient.

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 7a3ecf54b37c65d6144fa4d8c9356a8ea3046b14..a28251dd852e8a48199fbfa6fdff4208e3257515 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -275,6 +275,9 @@ class CONTENT_EXPORT ContentRendererClient {
   // 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,