message: Accept undecoded frame pairs in VideoLayerAnalyzer
  Cr-Commit-Position: refs/heads/master@{#30442}
diff: @@ -99,7 +99,8 @@ void VideoLayerAnalyzer::HandleFramePair(VideoFramePair sample,
  sample.capture_time.seconds<double>(),
  sample.render_time.seconds<double>(),
  sample.captured->width(), sample.captured->height(),
  - sample.decoded->width(), sample.decoded->height(), psnr);
  + sample.decoded ? sample.decoded->width() : 0,
  + sample.decoded ? sample.decoded->height() : 0, psnr);
  }
  }
  