Add "repaint" option to PaintSingleFrame

media/base/null_video_sink.cc

Index: media/base/null_video_sink.cc
diff --git a/media/base/null_video_sink.cc b/media/base/null_video_sink.cc
index f390986394549d7ad06749257995ce1e377bff58..6e03e53eaa0fe69428ef2c2f43340754563b0983 100644
--- a/media/base/null_video_sink.cc
+++ b/media/base/null_video_sink.cc
@@ -88,8 +88,9 @@ void NullVideoSink::CallRender() {
                                 delay);
 }
 
-void NullVideoSink::PaintSingleFrame(const scoped_refptr<VideoFrame>& frame) {
-  if (frame == last_frame_)
+void NullVideoSink::PaintSingleFrame(const scoped_refptr<VideoFrame>& frame,
+                                     bool repaint_duplicate_frame) {
+  if (!repaint_duplicate_frame && frame == last_frame_)
     return;
   last_frame_ = frame;
   new_frame_cb_.Run(frame);