[video-rAF] Set capture time correctly

Bug: chromium:1012063
Change-Id: Iacecd17733bfb8ee1673fc322964d2a95b1497fb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2007388
Commit-Queue: Thomas Guilbert <tguilbert@chromium.org>
Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733006}

third_party/blink/renderer/modules/video_raf/video_request_animation_frame_impl.cc

@@ -98,7 +98,7 @@ void VideoRequestAnimationFrameImpl::OnRequestAnimationFrame(
   base::TimeTicks time;
   if (presented_frame.metadata()->GetTimeTicks(
           media::VideoFrameMetadata::CAPTURE_BEGIN_TIME, &time)) {
-    metadata->setElapsedProcessingTime(
+    metadata->setCaptureTime(
         time_converter.MonotonicTimeToZeroBasedDocumentTime(time)
             .InMillisecondsF());
   }