Pass a TimeTicks along video capture pipeline to represent capture time

content/renderer/media/media_stream_video_track.cc

 // Copyright 2013 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/renderer/media/media_stream_video_track.h"
 
 #include "base/bind.h"
 #include "content/renderer/media/video_frame_deliverer.h"
 #include "media/base/bind_to_current_loop.h"
 
@@ skipping 35 matching lines @@
   void SetEnabled(bool enabled) {
     DCHECK(thread_checker().CalledOnValidThread());
     io_message_loop()->PostTask(
         FROM_HERE,
         base::Bind(&MediaStreamVideoTrack::FrameDeliverer::SetEnabledOnIO,
                    this, enabled));
   }
 
   virtual void DeliverFrameOnIO(
       const scoped_refptr<media::VideoFrame>& frame,
-      const media::VideoCaptureFormat& format) OVERRIDE {
+      const media::VideoCaptureFormat& format,
+      const base::TimeTicks& start_ticks) OVERRIDE {
     DCHECK(io_message_loop()->BelongsToCurrentThread());
     if (!enabled_)
       return;
-    VideoFrameDeliverer::DeliverFrameOnIO(frame, format);
+    VideoFrameDeliverer::DeliverFrameOnIO(frame, format, start_ticks);
   }
 
   const std::vector<MediaStreamVideoSink*>& sinks() const { return sinks_; }
 
  protected:
   virtual ~FrameDeliverer() {
     DCHECK(sinks_.empty());
   }
 
   void SetEnabledOnIO(bool enabled) {
@@ skipping 92 matching lines @@
     blink::WebMediaStreamSource::ReadyState state) {
   DCHECK(thread_checker_.CalledOnValidThread());
   const std::vector<MediaStreamVideoSink*>& sinks = frame_deliverer_->sinks();
   for (std::vector<MediaStreamVideoSink*>::const_iterator it = sinks.begin();
        it != sinks.end(); ++it) {
     (*it)->OnReadyStateChanged(state);
   }
 }
 
 }  // namespace content