Add struct traits for base::Value.

content/browser/renderer_host/media/video_capture_host.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 "content/browser/renderer_host/media/video_capture_host.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 77 matching lines @@
     const scoped_refptr<media::VideoFrame>& video_frame) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (controllers_.find(controller_id) == controllers_.end())
     return;
 
   if (!base::ContainsKey(device_id_to_observer_map_, controller_id))
     return;
 
   media::mojom::VideoFrameInfoPtr info = media::mojom::VideoFrameInfo::New();
   info->timestamp = video_frame->timestamp();
-  video_frame->metadata()->MergeInternalValuesInto(&info->metadata);
+  info->metadata = video_frame->metadata()->CopyInternalValues();
 
   DCHECK(media::PIXEL_FORMAT_I420 == video_frame->format() ||
          media::PIXEL_FORMAT_Y16 == video_frame->format());
   info->pixel_format = video_frame->format();
   info->storage_type = media::PIXEL_STORAGE_CPU;
   info->coded_size = video_frame->coded_size();
   info->visible_rect = video_frame->visible_rect();
 
   device_id_to_observer_map_[controller_id]->OnBufferReady(buffer_id,
                                                            std::move(info));
@@ skipping 217 matching lines @@
   const base::WeakPtr<VideoCaptureController> controller = it->second;
   controllers_.erase(it);
   if (!controller)
     return;
 
   media_stream_manager_->video_capture_manager()->StopCaptureForClient(
       controller.get(), controller_id, this, on_error);
 }
 
 }  // namespace content