Memory copy the VideoFrame to match the requirement for HW encoders.

media/cast/sender/video_sender.cc

Index: media/cast/sender/video_sender.cc
diff --git a/media/cast/sender/video_sender.cc b/media/cast/sender/video_sender.cc
index b926cb00fa4f5483080c615bdac14b732508813b..eea1e060ebbe23d3115b9605601dfc9a5930d97d 100644
--- a/media/cast/sender/video_sender.cc
+++ b/media/cast/sender/video_sender.cc
@@ -326,6 +326,10 @@ void VideoSender::OnEncodedVideoFrame(
   frames_in_encoder_--;
   DCHECK_GE(frames_in_encoder_, 0);
 
+  // Encoding was exited with errors.
+  if (!encoded_frame)
+    return;
+
   duration_in_encoder_ =
       last_enqueued_frame_reference_time_ - encoded_frame->reference_time;