Remove unnecessary wrapper on DomHighResTimestamp, and clamp resolution to 1 millisecond

third_party/WebKit/Source/core/timing/PerformanceBase.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 415 matching lines @@
 
 void PerformanceBase::addLongTaskTiming(double startTime,
                                         double endTime,
                                         const String& name,
                                         const String& culpritFrameSrc,
                                         const String& culpritFrameId,
                                         const String& culpritFrameName) {
   if (!hasObserverFor(PerformanceEntry::LongTask))
     return;
   PerformanceEntry* entry = PerformanceLongTaskTiming::create(
-      monotonicTimeToDOMHighResTimeStampInMillis(startTime),
-      monotonicTimeToDOMHighResTimeStampInMillis(endTime), name,
-      culpritFrameSrc, culpritFrameId, culpritFrameName);
+      monotonicTimeToDOMHighResTimeStamp(startTime),
+      monotonicTimeToDOMHighResTimeStamp(endTime), name, culpritFrameSrc,
+      culpritFrameId, culpritFrameName);
   notifyObserversOfEntry(*entry);
 }
 
 void PerformanceBase::mark(const String& markName,
                            ExceptionState& exceptionState) {
   if (!m_userTiming)
     m_userTiming = UserTiming::create(*this);
   if (PerformanceEntry* entry = m_userTiming->mark(markName, exceptionState))
     notifyObserversOfEntry(*entry);
 }
@@ skipping 106 matching lines @@
     double monotonicTime) const {
   // Avoid exposing raw platform timestamps.
   if (m_timeOrigin == 0.0)
     return 0.0;
 
   double timeInSeconds = monotonicTime - m_timeOrigin;
   return convertSecondsToDOMHighResTimeStamp(
       clampTimeResolution(timeInSeconds));
 }
 
-double PerformanceBase::monotonicTimeToDOMHighResTimeStampInMillis(
-    DOMHighResTimeStamp monotonicTime) const {
-  return monotonicTimeToDOMHighResTimeStamp(monotonicTime) * 1000;
-}
-
 DOMHighResTimeStamp PerformanceBase::now() const {
   return monotonicTimeToDOMHighResTimeStamp(monotonicallyIncreasingTime());
 }
 
 DEFINE_TRACE(PerformanceBase) {
   visitor->trace(m_frameTimingBuffer);
   visitor->trace(m_resourceTimingBuffer);
   visitor->trace(m_navigationTiming);
   visitor->trace(m_userTiming);
   visitor->trace(m_observers);
   visitor->trace(m_activeObservers);
   visitor->trace(m_suspendedObservers);
   EventTargetWithInlineData::trace(visitor);
 }
 
 }  // namespace blink