void ResourceLoadTiming::setSendStart(double sendStart)
{
    TRACE_EVENT_MARK_WITH_TIMESTAMP0("blink.user_timing", "requestStart", sendStart);
    m_sendStart = sendStart;
}
void ResourceLoadTiming::setSendStart(double sendStart) {
  TRACE_EVENT_MARK_WITH_TIMESTAMP0("blink.user_timing", "requestStart",
                                   TraceEvent::toTraceTimestamp(sendStart));
  m_sendStart = sendStart;
}