Support (E)AC3 passthrough

media/audio/android/audio_manager_android.cc

Index: media/audio/android/audio_manager_android.cc
diff --git a/media/audio/android/audio_manager_android.cc b/media/audio/android/audio_manager_android.cc
index 17567885331622d651a43c1573ee17bb07f691f8..0b64a85fd239d01cde7d3f06edd99bfe76762cb2 100644
--- a/media/audio/android/audio_manager_android.cc
+++ b/media/audio/android/audio_manager_android.cc
@@ -15,6 +15,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "jni/AudioManagerAndroid_jni.h"
 #include "media/audio/android/audio_record_input.h"
+#include "media/audio/android/audio_track_output_stream.h"
 #include "media/audio/android/opensles_input.h"
 #include "media/audio/android/opensles_output.h"
 #include "media/audio/audio_device_description.h"
@@ -239,9 +240,8 @@ AudioOutputStream* AudioManagerAndroid::MakeBitstreamOutputStream(
     const AudioParameters& params,
     const std::string& device_id,
     const LogCallback& log_callback) {
-  // TODO(tsunghung): add output stream for audio bitstream formats.
-  NOTREACHED();
-  return nullptr;
+  DCHECK(params.IsBitstreamFormat());
+  return new AudioTrackOutputStream(this, params);
 }
 
 AudioInputStream* AudioManagerAndroid::MakeLinearInputStream(