Verify returned frames from media::VideoFrame::Wrap*() methods

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 356 matching lines @@
           0 /* shared_memory_offset */, timestamp - first_frame_timestamp_);
       buffer_finished_callback = media::BindToCurrentLoop(
           base::Bind(&VideoCaptureImpl::OnClientBufferFinished,
                      weak_factory_.GetWeakPtr(), buffer_id, buffer));
       break;
     }
     default:
       NOTREACHED();
       break;
   }
-  DCHECK(frame);
+  if (!frame) {
+    Send(new VideoCaptureHostMsg_BufferReady(device_id_, buffer_id,
+                                             gpu::SyncToken(), -1.0));
+    return;
+  }
 
   frame->metadata()->SetTimeTicks(media::VideoFrameMetadata::REFERENCE_TIME,
                                   timestamp);
   frame->AddDestructionObserver(
       base::Bind(&VideoCaptureImpl::DidFinishConsumingFrame, frame->metadata(),
                  base::Passed(&release_sync_token), buffer_finished_callback));
 
   frame->metadata()->MergeInternalValuesFrom(metadata);
 
   for (const auto& client : clients_)
@@ skipping 159 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