getUserMeida: report device starting states

media/capture/video/fake_video_capture_device.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/fake_video_capture_device.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <utility>
 
@@ skipping 216 matching lines @@
   if (buffer_ownership_ == BufferOwnership::CLIENT_BUFFERS)
     BeepAndScheduleNextCapture(
         base::TimeTicks::Now(),
         base::Bind(&FakeVideoCaptureDevice::CaptureUsingClientBuffers,
                    weak_factory_.GetWeakPtr()));
   else if (buffer_ownership_ == BufferOwnership::OWN_BUFFERS)
     BeepAndScheduleNextCapture(
         base::TimeTicks::Now(),
         base::Bind(&FakeVideoCaptureDevice::CaptureUsingOwnBuffers,
                    weak_factory_.GetWeakPtr()));
+
+  client_->OnStarted();
 }
 
 void FakeVideoCaptureDevice::StopAndDeAllocate() {
   DCHECK(thread_checker_.CalledOnValidThread());
   client_.reset();
 }
 
 void FakeVideoCaptureDevice::GetPhotoCapabilities(
     GetPhotoCapabilitiesCallback callback) {
   mojom::PhotoCapabilitiesPtr photo_capabilities =
@@ skipping 122 matching lines @@
   // Don't accumulate any debt if we are lagging behind - just post the next
   // frame immediately and continue as normal.
   const base::TimeTicks next_execution_time =
       std::max(current_time, expected_execution_time + frame_interval);
   const base::TimeDelta delay = next_execution_time - current_time;
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::Bind(next_capture, next_execution_time), delay);
 }
 
 }  // namespace media