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 b6d339abf93b10def078fdc63942dd9d375db1c8..bf7274dcc31c49bccac3ba0a3d2974729c858841 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"
@@ -168,7 +169,7 @@ AudioOutputStream* AudioManagerAndroid::MakeAudioOutputStream(
   DCHECK(GetTaskRunner()->BelongsToCurrentThread());
   AudioOutputStream* stream = AudioManagerBase::MakeAudioOutputStream(
       params, std::string(), AudioManager::LogCallback());
-  streams_.insert(static_cast<OpenSLESOutputStream*>(stream));
+  streams_.insert(static_cast<MuteableAudioOutputStream*>(stream));
   return stream;
 }
 
@@ -194,7 +195,7 @@ AudioInputStream* AudioManagerAndroid::MakeAudioInputStream(
 
 void AudioManagerAndroid::ReleaseOutputStream(AudioOutputStream* stream) {
   DCHECK(GetTaskRunner()->BelongsToCurrentThread());
-  streams_.erase(static_cast<OpenSLESOutputStream*>(stream));
+  streams_.erase(static_cast<MuteableAudioOutputStream*>(stream));
   AudioManagerBase::ReleaseOutputStream(stream);
 }
 
@@ -232,6 +233,14 @@ AudioOutputStream* AudioManagerAndroid::MakeLowLatencyOutputStream(
   return new OpenSLESOutputStream(this, params, stream_type);
 }
 
+AudioOutputStream* AudioManagerAndroid::MakeRawOutputStream(
+    const AudioParameters& params,
+    const std::string& device_id,
+    const LogCallback& log_callback) {
+  DCHECK(params.IsRawFormat());
+  return new AudioTrackOutputStream(this, params);
+}
+
 AudioInputStream* AudioManagerAndroid::MakeLinearInputStream(
     const AudioParameters& params,
     const std::string& device_id,