Initialization of audio manager for Android is now done on the audio thread

media/audio/android/audio_manager_android.h

Index: media/audio/android/audio_manager_android.h
diff --git a/media/audio/android/audio_manager_android.h b/media/audio/android/audio_manager_android.h
index 670c094900d26dd230bb82f9da0eb9713f0de855..c67b8daa2635b8d67a3209c4bc6f7a7ada9045ba 100644
--- a/media/audio/android/audio_manager_android.h
+++ b/media/audio/android/audio_manager_android.h
@@ -9,7 +9,9 @@
 
 #include "base/android/jni_android.h"
 #include "base/gtest_prod_util.h"
+#include "base/message_loop/message_loop.h"
 #include "base/synchronization/lock.h"
+#include "base/synchronization/waitable_event.h"
 #include "media/audio/audio_manager_base.h"
 
 namespace media {
@@ -17,7 +19,9 @@ namespace media {
 class OpenSLESOutputStream;
 
 // Android implemention of AudioManager.
-class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
+class MEDIA_EXPORT AudioManagerAndroid
+    : public AudioManagerBase,
+      public base::MessageLoop::DestructionObserver {
  public:
   AudioManagerAndroid(AudioLogFactory* audio_log_factory);
 
@@ -67,6 +71,13 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
       const AudioParameters& input_params) OVERRIDE;
 
  private:
+  // Implementation of MessageLoop::DestructionObserver.
+  virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
+
+  void CreateAndInitOnAudioThread();
+  void DoCreateAndInitOnAudioThread(base::WaitableEvent* event);
+  void CloseOnAudioThread();
+
   bool HadNoAudioStreams();
   void Init();
   void Close();
@@ -77,6 +88,8 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
   int GetAudioLowLatencyOutputFrameSize();
   int GetOptimalOutputFrameSize(int sample_rate, int channels);
 
+  void GetAudioInputDeviceNamesOnAudioThread(
+      base::WaitableEvent* event, AudioDeviceNames* device_names);
   void DoSetMuteOnAudioThread(bool muted);
 
   // Allow the AudioAndroidTest to access private methods.