Implementing AudioOutputDevice authorization timeout

media/audio/audio_output_device.h

Index: media/audio/audio_output_device.h
diff --git a/media/audio/audio_output_device.h b/media/audio/audio_output_device.h
index 532f45fe4a13eeb6b8b2884292e28652da3690f1..c0faacd11517fab6c80e168a0c433b627dfb5561 100644
--- a/media/audio/audio_output_device.h
+++ b/media/audio/audio_output_device.h
@@ -77,6 +77,10 @@
 #include "media/base/media_export.h"
 #include "media/base/output_device_info.h"
 
+namespace base {
+class OneShotTimer;
+}
+
 namespace media {
 
 class MEDIA_EXPORT AudioOutputDevice
@@ -90,7 +94,8 @@ class MEDIA_EXPORT AudioOutputDevice
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
       int session_id,
       const std::string& device_id,
-      const url::Origin& security_origin);
+      const url::Origin& security_origin,
+      base::TimeDelta authorization_timeout);
 
   // Request authorization to use the device specified in the constructor.
   void RequestDeviceAuthorization();
@@ -145,6 +150,13 @@ class MEDIA_EXPORT AudioOutputDevice
   void ShutDownOnIOThread();
   void SetVolumeOnIOThread(double volume);
 
+  // Process device authorization result on the IO thread.
+  void ProcessDeviceAuthorizationOnIOThread(
+      OutputDeviceStatus device_status,
+      const media::AudioParameters& output_params,
+      const std::string& matched_device_id,
+      bool timed_out);
+
   // base::MessageLoop::DestructionObserver implementation for the IO loop.
   // If the IO loop dies before we do, we shut down the audio thread from here.
   void WillDestroyCurrentMessageLoop() override;
@@ -201,6 +213,9 @@ class MEDIA_EXPORT AudioOutputDevice
   AudioParameters output_params_;
   OutputDeviceStatus device_status_;
 
+  const base::TimeDelta auth_timeout_;
+  std::unique_ptr<base::OneShotTimer> auth_timeout_action_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioOutputDevice);
 };