getUserMeida: report device starting states

media/capture/video/mac/video_capture_device_decklink_mac.h

 // Copyright 2014 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.
 
 // Implementation of VideoCaptureDevice class for Blackmagic video capture
 // devices by using the DeckLink SDK.
 
 #ifndef MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_
 #define MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_
 
@@ skipping 50 matching lines @@
                               base::TimeTicks reference_time,
                               base::TimeDelta timestamp);
 
   // Forwarder to VideoCaptureDevice::Client::OnError().
   void SendErrorString(const tracked_objects::Location& from_here,
                        const std::string& reason);
 
   // Forwarder to VideoCaptureDevice::Client::OnLog().
   void SendLogString(const std::string& message);
 
+  // Forwarder to VideoCaptureDevice::Client::OnStarted().
+  void ReportStarted();
+
  private:
   // VideoCaptureDevice implementation.
   void AllocateAndStart(
       const VideoCaptureParams& params,
       std::unique_ptr<VideoCaptureDevice::Client> client) override;
   void StopAndDeAllocate() override;
 
   // Protects concurrent setting and using of |client_|.
   base::Lock lock_;
   std::unique_ptr<VideoCaptureDevice::Client> client_;
 
   // Reference counted handle to the DeckLink capture delegate, ref counted by
   // the DeckLink SDK as well.
   scoped_refptr<DeckLinkCaptureDelegate> decklink_capture_delegate_;
 
   // Checks for Device (a.k.a. Audio) thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceDeckLinkMac);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_MAC_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_