Looking up device id by session id for AudioRendererMixerInput

media/audio/audio_output_ipc.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_OUTPUT_IPC_H_
 #define MEDIA_AUDIO_AUDIO_OUTPUT_IPC_H_
 
 #include <string>
 
 #include "base/memory/shared_memory.h"
@@ skipping 18 matching lines @@
 // Contains IPC notifications for the state of the server side
 // (AudioOutputController) audio state changes and when an AudioOutputController
 // has been created.  Implemented by AudioOutputDevice.
 class MEDIA_EXPORT AudioOutputIPCDelegate {
  public:
   // Called when state of an audio stream has changed.
   virtual void OnStateChanged(AudioOutputIPCDelegateState state) = 0;
 
   // Called when an authorization request for an output device has been
   // completed
-  virtual void OnDeviceAuthorized(
-      OutputDeviceStatus device_status,
-      const media::AudioParameters& output_params) = 0;
+  virtual void OnDeviceAuthorized(OutputDeviceStatus device_status,
+                                  const media::AudioParameters& output_params,
+                                  const std::string& matched_device_id) = 0;
 
   // Called when an audio stream has been created.
   // The shared memory |handle| points to a memory section that's used to
   // transfer audio buffers from the AudioOutputIPCDelegate back to the
   // AudioRendererHost.  The implementation of OnStreamCreated takes ownership.
   // The |socket_handle| is used by AudioRendererHost to signal requests for
   // audio data to be written into the shared memory. The AudioOutputIPCDelegate
   // must read from this socket and provide audio whenever data (search for
   // "pending_bytes") is received.
   virtual void OnStreamCreated(base::SharedMemoryHandle handle,
@@ skipping 58 matching lines @@
   // AudioOutputController in the peer process.
   virtual void CloseStream() = 0;
 
   // Sets the volume of the audio stream.
   virtual void SetVolume(double volume) = 0;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_IPC_H_