Add IsSupportedBitstreamAudioCodec() function in MediaClient.

chromecast/renderer/cast_content_renderer_client.cc

 // 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.
 
 #include "chromecast/renderer/cast_content_renderer_client.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 148 matching lines @@
   return supported_profiles_->IsSupportedVideoConfig(
       media::ToCastVideoCodec(config.codec, config.profile),
       media::ToCastVideoProfile(config.profile), config.level);
 #else
   return media::MediaCapabilitiesShlib::IsSupportedVideoConfig(
       media::ToCastVideoCodec(config.codec, config.profile),
       media::ToCastVideoProfile(config.profile), config.level);
 #endif
 }
 
+bool CastContentRendererClient::IsSupportedBitstreamAudio(
+    ::media::AudioCodec codec) {
+  return (codec == ::media::kCodecAC3 &&
+          media::MediaCapabilities::HdmiSinkSupportsAC3()) ||
+         (codec == ::media::kCodecEAC3 &&
+          media::MediaCapabilities::HdmiSinkSupportsEAC3());
+}
+
 blink::WebPrescientNetworking*
 CastContentRendererClient::GetPrescientNetworking() {
   return prescient_networking_dispatcher_.get();
 }
 
 void CastContentRendererClient::DeferMediaLoad(
     content::RenderFrame* render_frame,
     bool render_frame_has_played_media_before,
     const base::Closure& closure) {
   if (allow_hidden_media_playback_) {
@@ skipping 21 matching lines @@
 }
 
 void CastContentRendererClient::
     SetRuntimeFeaturesDefaultsBeforeBlinkInitialization() {
   // Settings for ATV (Android defaults are not what we want).
   blink::WebRuntimeFeatures::EnableMediaControlsOverlayPlayButton(false);
 }
 
 }  // namespace shell
 }  // namespace chromecast