Pass a TimeTicks along video capture pipeline to represent capture time

content/renderer/media/video_frame_deliverer.h

Index: content/renderer/media/video_frame_deliverer.h
diff --git a/content/renderer/media/video_frame_deliverer.h b/content/renderer/media/video_frame_deliverer.h
index 0649d81383ce3704410a79d926fbcad2505b8639..a1f4b9d4f6a80afff2db7d656000812c7031224e 100644
--- a/content/renderer/media/video_frame_deliverer.h
+++ b/content/renderer/media/video_frame_deliverer.h
@@ -13,6 +13,7 @@
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/media/video_capture.h"
+#include "content/public/renderer/media_stream_video_sink.h"
 #include "media/base/video_frame.h"
 
 namespace content {
@@ -37,11 +38,12 @@ class VideoFrameDeliverer
   // Must be called on the main render thread.
   void RemoveCallback(void* id);
 
-  // Triggers all registered callbacks with |frame| and |format| as parameters.
-  // Must be called on the IO-thread.
+  // Triggers all registered callbacks with |frame|, |format| and
+  // |estimated_capture_time| as parameters. Must be called on the IO-thread.
   virtual void DeliverFrameOnIO(
       const scoped_refptr<media::VideoFrame>& frame,
-      const media::VideoCaptureFormat& format);
+      const media::VideoCaptureFormat& format,
+      const base::TimeTicks& estimated_capture_time);
 
   const scoped_refptr<base::MessageLoopProxy>& io_message_loop() const {
     return io_message_loop_;