Replace MessageLoopProxy with SingleThreadTaskRunner for the rest of media/.

media/audio/audio_manager.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_H_
 #define MEDIA_AUDIO_AUDIO_MANAGER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "media/audio/audio_device_name.h"
 #include "media/audio/audio_parameters.h"
 
 namespace base {
-class MessageLoop;
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 }
 
 namespace media {
 
 class AudioInputStream;
 class AudioOutputStream;
 
 // Manages all audio resources. In particular it owns the AudioOutputStream
 // objects. Provides some convenience functions that avoid the need to provide
 // iterators over the existing streams.
@@ skipping 28 matching lines @@
   // ideally must not be called from the UI thread or other time sensitive
   // threads to avoid blocking the rest of the application.
   virtual void ShowAudioInputSettings() = 0;
 
   // Appends a list of available input devices to |device_names|,
   // which must initially be empty. It is not guaranteed that all the
   // devices in the list support all formats and sample rates for
   // recording.
   //
   // Not threadsafe; in production this should only be called from the
-  // Audio IO thread (see GetMessageLoop).
+  // Audio IO thread (see GetTaskRunner()).
   virtual void GetAudioInputDeviceNames(AudioDeviceNames* device_names) = 0;
 
   // Appends a list of available output devices to |device_names|,
   // which must initially be empty.
   //
   // Not threadsafe; in production this should only be called from the
-  // Audio IO thread (see GetMessageLoop).
+  // Audio IO thread (see GetTaskRunner()).
   virtual void GetAudioOutputDeviceNames(AudioDeviceNames* device_names) = 0;
 
   // Factory for all the supported stream formats. |params| defines parameters
   // of the audio stream to be created.
   //
   // |params.sample_per_packet| is the requested buffer allocation which the
   // audio source thinks it can usually fill without blocking. Internally two
   // or three buffers are created, one will be locked for playback and one will
   // be ready to be filled in the call to AudioSourceCallback::OnMoreData().
   //
@@ skipping 37 matching lines @@
   // with 0 suggesting that the implementation use a default value for that
   // platform.
   // Returns NULL if the combination of the parameters is not supported, or if
   // we have reached some other platform specific limit.
   //
   // Do not free the returned AudioInputStream. It is owned by AudioManager.
   // When you are done with it, call |Stop()| and |Close()| to release it.
   virtual AudioInputStream* MakeAudioInputStream(
       const AudioParameters& params, const std::string& device_id) = 0;
 
-  // Returns message loop used for audio IO.
-  virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() = 0;
+  // Returns the task runner used for audio IO.
+  virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
 
-  // Heavyweight tasks should use GetWorkerLoop() instead of GetMessageLoop().
-  // On most platforms they are the same, but some share the UI loop with the
-  // audio IO loop.
-  virtual scoped_refptr<base::MessageLoopProxy> GetWorkerLoop() = 0;
+  // Heavyweight tasks should use GetWorkerTaskRunner() instead of
+  // GetTaskRunner(). On most platforms they are the same, but some share the
+  // UI loop with the audio IO loop.
+  virtual scoped_refptr<base::SingleThreadTaskRunner> GetWorkerTaskRunner() = 0;
 
   // Allows clients to listen for device state changes; e.g. preferred sample
   // rate or channel layout changes.  The typical response to receiving this
   // callback is to recreate the stream.
   class AudioDeviceListener {
    public:
     virtual void OnDeviceChange() = 0;
   };
 
   virtual void AddOutputDeviceChangeListener(AudioDeviceListener* listener) = 0;
@@ skipping 29 matching lines @@
  protected:
   AudioManager();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioManager);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_MANAGER_H_