Add MODIFY_AUDIO_SETTINGS permission in Android manifest and implementation in audio manager.

media/audio/audio_manager_base.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_
 
 #include <map>
 #include <string>
 #include <utility>
 
 #include "base/atomic_ref_count.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/synchronization/lock.h"
 #include "media/audio/audio_manager.h"
 
 #if defined(OS_WIN)
 #include "base/win/scoped_com_initializer.h"
 #endif
 
+#if defined(OS_ANDROID)
+#include "base/android/jni_android.h"
+#endif
+
 namespace base {
 class Thread;
 }
 
 namespace media {
 
 class AudioOutputDispatcher;
 
 // AudioManagerBase provides AudioManager functions common for all platforms.
 class MEDIA_EXPORT AudioManagerBase : public AudioManager {
@@ skipping 53 matching lines @@
   // Listeners will be notified on the AudioManager::GetMessageLoop() loop.
   virtual void AddOutputDeviceChangeListener(
       AudioDeviceListener* listener) OVERRIDE;
   virtual void RemoveOutputDeviceChangeListener(
       AudioDeviceListener* listener) OVERRIDE;
 
   virtual AudioParameters GetDefaultOutputStreamParameters() OVERRIDE;
   virtual AudioParameters GetInputStreamParameters(
       const std::string& device_id) OVERRIDE;
 
+#if defined(OS_ANDROID)
+  static bool RegisterAudioManager(JNIEnv* env);
+#endif
+
  protected:
   AudioManagerBase();
 
   // TODO(dalecurtis): This must change to map both input and output parameters
   // to a single dispatcher, otherwise on a device state change we'll just get
   // the exact same invalid dispatcher.
   typedef std::map<std::pair<AudioParameters, AudioParameters>,
                    scoped_refptr<AudioOutputDispatcher> >
       AudioOutputDispatchersMap;
 
@@ skipping 19 matching lines @@
       const AudioParameters& input_params) = 0;
 
   // Map of cached AudioOutputDispatcher instances.  Must only be touched
   // from the audio thread (no locking).
   AudioOutputDispatchersMap output_dispatchers_;
 
  private:
   // Called by Shutdown().
   void ShutdownOnAudioThread();
 
+  void SetAudioMode(int mode);
+
   // Counts the number of active input streams to find out if something else
   // is currently recording in Chrome.
   base::AtomicRefCount num_active_input_streams_;
 
   // Max number of open output streams, modified by
   // SetMaxOutputStreamsAllowed().
   int max_num_output_streams_;
 
   // Max number of open input streams.
   int max_num_input_streams_;
@@ skipping 15 matching lines @@
   // tasks which run on the audio thread even after Shutdown() has been started
   // and GetMessageLoop() starts returning NULL.
   scoped_refptr<base::MessageLoopProxy> message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioManagerBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_BASE_H_