TraceEventSyntheticDelayClock 15 base/debug/trace_event_synthetic_delay.cc TraceEventSyntheticDelayClock::TraceEventSyntheticDelayClock() {} TraceEventSyntheticDelayClock 16 base/debug/trace_event_synthetic_delay.cc TraceEventSyntheticDelayClock::~TraceEventSyntheticDelayClock() {}