getUserMeida: report device starting states

media/capture/video/win/video_capture_device_win.cc

 // 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.
 
 #include "media/capture/video/win/video_capture_device_win.h"
 
 #include <ks.h>
 #include <ksmedia.h>
 
 #include <algorithm>
@@ skipping 405 matching lines @@
   }
 
   // Start capturing.
   hr = media_control_->Run();
   if (FAILED(hr)) {
     SetErrorState(FROM_HERE, "Failed to start the Capture device.", hr);
     return;
   }
 
   state_ = kCapturing;
+  client_->OnStarted();
 }
 
 void VideoCaptureDeviceWin::StopAndDeAllocate() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (state_ != kCapturing)
     return;
 
   HRESULT hr = media_control_->Stop();
   if (FAILED(hr)) {
     SetErrorState(FROM_HERE, "Failed to stop the capture graph.", hr);
@@ skipping 153 matching lines @@
 void VideoCaptureDeviceWin::SetErrorState(
     const tracked_objects::Location& from_here,
     const std::string& reason,
     HRESULT hr) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DLOG_IF_FAILED_WITH_HRESULT(reason, hr);
   state_ = kError;
   client_->OnError(from_here, reason);
 }
 }  // namespace media