DidCopyFromCompositingSurfaceToVideoFrame 300 content/browser/media/capture/web_contents_video_capture_device.cc void DidCopyFromCompositingSurfaceToVideoFrame( DidCopyFromCompositingSurfaceToVideoFrame 670 content/browser/media/capture/web_contents_video_capture_device.cc DidCopyFromCompositingSurfaceToVideoFrame,