DVPLOG_IF         641 base/logging.h #define DVPLOG(verboselevel) DVPLOG_IF(verboselevel, VLOG_IS_ON(verboselevel))
DVPLOG_IF          72 media/video/capture/win/video_capture_device_win.cc         DVPLOG_IF(2, FAILED(hr)) << "Failed to bind camera filter.";