getUserMeida: report device starting states

media/capture/video/fake_video_capture_device_unittest.cc

Index: media/capture/video/fake_video_capture_device_unittest.cc
diff --git a/media/capture/video/fake_video_capture_device_unittest.cc b/media/capture/video/fake_video_capture_device_unittest.cc
index c128ad96d49fa74e7ca9cd68df5f9a20a6b8866b..3eff475da174a9484bc7fce41a49355960553b05 100644
--- a/media/capture/video/fake_video_capture_device_unittest.cc
+++ b/media/capture/video/fake_video_capture_device_unittest.cc
@@ -102,6 +102,7 @@ class MockClient : public VideoCaptureDevice::Client {
   MOCK_METHOD2(OnError,
                void(const tracked_objects::Location& from_here,
                     const std::string& reason));
+  MOCK_METHOD0(OnStarted, void(void));
 
   explicit MockClient(base::Callback<void(const VideoCaptureFormat&)> frame_cb)
       : frame_cb_(frame_cb) {}