Video Capture: Allow suspension of individual devices.

content/renderer/media/video_capture_impl.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.
 //
 // Notes about usage of this object by VideoCaptureImplManager.
 //
 // VideoCaptureImplManager access this object by using a Unretained()
 // binding and tasks on the IO thread. It is then important that
 // VideoCaptureImpl never post task to itself. All operations must be
 // synchronous.
@@ skipping 430 matching lines @@
     case VIDEO_CAPTURE_STATE_STOPPED:
       state_ = VIDEO_CAPTURE_STATE_STOPPED;
       DVLOG(1) << "OnStateChanged: stopped!, device_id = " << device_id_;
       client_buffers_.clear();
       client_buffer2s_.clear();
       weak_factory_.InvalidateWeakPtrs();
       if (!clients_.empty() || !clients_pending_on_restart_.empty())
         RestartCapture();
       break;
     case VIDEO_CAPTURE_STATE_PAUSED:
+    case VIDEO_CAPTURE_STATE_RESUMED:
       for (const auto& client : clients_)
-        client.second.state_update_cb.Run(VIDEO_CAPTURE_STATE_PAUSED);
+        client.second.state_update_cb.Run(state);
       break;
     case VIDEO_CAPTURE_STATE_ERROR:
       DVLOG(1) << "OnStateChanged: error!, device_id = " << device_id_;
       for (const auto& client : clients_)
         client.second.state_update_cb.Run(VIDEO_CAPTURE_STATE_ERROR);
       clients_.clear();
       state_ = VIDEO_CAPTURE_STATE_ERROR;
       break;
     case VIDEO_CAPTURE_STATE_ENDED:
       DVLOG(1) << "OnStateChanged: ended!, device_id = " << device_id_;
@@ skipping 107 matching lines @@
   double consumer_resource_utilization = -1.0;
   if (!metadata->GetDouble(media::VideoFrameMetadata::RESOURCE_UTILIZATION,
                            &consumer_resource_utilization)) {
     consumer_resource_utilization = -1.0;
   }
 
   callback_to_io_thread.Run(*release_sync_token, consumer_resource_utilization);
 }
 
 }  // namespace content