Pass a TimeTicks along video capture pipeline to represent capture time

content/renderer/media/webrtc/webrtc_video_track_adapter.cc

Index: content/renderer/media/webrtc/webrtc_video_track_adapter.cc
diff --git a/content/renderer/media/webrtc/webrtc_video_track_adapter.cc b/content/renderer/media/webrtc/webrtc_video_track_adapter.cc
index 810f8bad7e5ea650ba793ff20b0ed75917623279..432e7f96261ba01628c9a40f9859a1b3da8d197a 100644
--- a/content/renderer/media/webrtc/webrtc_video_track_adapter.cc
+++ b/content/renderer/media/webrtc/webrtc_video_track_adapter.cc
@@ -41,11 +41,13 @@ class WebRtcVideoTrackAdapter::WebRtcVideoSourceAdapter
       WebRtcVideoCapturerAdapter* capture_adapter);
 
   void OnVideoFrameOnIO(const scoped_refptr<media::VideoFrame>& frame,
-                        const media::VideoCaptureFormat& format);
+                        const media::VideoCaptureFormat& format,
+                        const base::TimeTicks& start_ticks);
 
  private:
   void OnVideoFrameOnWorkerThread(const scoped_refptr<media::VideoFrame>& frame,
-                                  const media::VideoCaptureFormat& format);
+                                  const media::VideoCaptureFormat& format,
+                                  const base::TimeTicks& start_ticks);
   friend class base::RefCountedThreadSafe<WebRtcVideoSourceAdapter>;
   virtual ~WebRtcVideoSourceAdapter();
 
@@ -91,18 +93,20 @@ WebRtcVideoTrackAdapter::WebRtcVideoSourceAdapter::~WebRtcVideoSourceAdapter() {
 
 void WebRtcVideoTrackAdapter::WebRtcVideoSourceAdapter::OnVideoFrameOnIO(
     const scoped_refptr<media::VideoFrame>& frame,
-    const media::VideoCaptureFormat& format) {
+    const media::VideoCaptureFormat& format,
+    const base::TimeTicks& start_ticks) {
   DCHECK(io_thread_checker_.CalledOnValidThread());
   libjingle_worker_thread_->PostTask(
       FROM_HERE,
       base::Bind(&WebRtcVideoSourceAdapter::OnVideoFrameOnWorkerThread,
-                 this, frame, format));
+                 this, frame, format, start_ticks));
 }
 
 void
 WebRtcVideoTrackAdapter::WebRtcVideoSourceAdapter::OnVideoFrameOnWorkerThread(
     const scoped_refptr<media::VideoFrame>& frame,
-    const media::VideoCaptureFormat& format) {
+    const media::VideoCaptureFormat& format,
+    const base::TimeTicks& start_ticks) {
   DCHECK(libjingle_worker_thread_->BelongsToCurrentThread());
   capture_adapter_->OnFrameCaptured(frame);
 }