Plumb DemuxerStream::EnableBitstreamConverter through mojo pipeline.

chromecast/browser/media/cast_renderer.cc

Index: chromecast/browser/media/cast_renderer.cc
diff --git a/chromecast/browser/media/cast_renderer.cc b/chromecast/browser/media/cast_renderer.cc
index badc7cbc411bc2e2628f6fff924b94aa936adb7f..0e0512f2c1869acf6447429000fc40df6d6e8603 100644
--- a/chromecast/browser/media/cast_renderer.cc
+++ b/chromecast/browser/media/cast_renderer.cc
@@ -98,6 +98,7 @@ void CastRenderer::Initialize(
       init_cb.Run(status);
       return;
     }
+    audio_stream->EnableBitstreamConverter();
   }
 
   // Initialize video.
@@ -124,6 +125,7 @@ void CastRenderer::Initialize(
       init_cb.Run(status);
       return;
     }
+    video_stream->EnableBitstreamConverter();
   }
 
   ended_cb_ = ended_cb;