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..b4a5698dae7bedc49b7c0ed166859f766158d5fd 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 +71,9 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
       const AudioParameters& input_params) OVERRIDE;
 
  private:
+  // Implementation of MessageLoop::DestructionObserver.
+  virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
+
   bool HadNoAudioStreams();
   void Init();
   void Close();
@@ -77,6 +84,10 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
   int GetAudioLowLatencyOutputFrameSize();
   int GetOptimalOutputFrameSize(int sample_rate, int channels);
 
+  void InitializeOnAudioThread();
+  void CloseOnAudioThread();
+  void GetAudioInputDeviceNamesOnAudioThread(
+      base::WaitableEvent* event, AudioDeviceNames* device_names);
   void DoSetMuteOnAudioThread(bool muted);
 
   // Allow the AudioAndroidTest to access private methods.
@@ -91,6 +102,7 @@ class MEDIA_EXPORT AudioManagerAndroid : public AudioManagerBase {
   // AudioManager::MakeAudioOutputStream on the audio thread. For now, this
   // lock is used to guard access to |streams_|.
   base::Lock streams_lock_;
+  bool initialized_on_audio_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerAndroid);
 };