Looking up device id by session id for AudioRendererMixerInput

content/renderer/pepper/pepper_platform_audio_output.h

Index: content/renderer/pepper/pepper_platform_audio_output.h
diff --git a/content/renderer/pepper/pepper_platform_audio_output.h b/content/renderer/pepper/pepper_platform_audio_output.h
index a5bd3d9e727545ecaa06a05dc22e5b64ac989ffe..116fdf4bc68a6141b6646f4203af80658e419416 100644
--- a/content/renderer/pepper/pepper_platform_audio_output.h
+++ b/content/renderer/pepper/pepper_platform_audio_output.h
@@ -49,7 +49,8 @@ class PepperPlatformAudioOutput
   // media::AudioOutputIPCDelegate implementation.
   void OnStateChanged(media::AudioOutputIPCDelegateState state) override;
   void OnDeviceAuthorized(media::OutputDeviceStatus device_status,
-                          const media::AudioParameters& output_params) override;
+                          const media::AudioParameters& output_params,
+                          const std::string& matched_device_id) override;
   void OnStreamCreated(base::SharedMemoryHandle handle,
                        base::SyncSocket::Handle socket_handle,
                        int length) override;