Use high precision timestamp for Event.timestamp

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

 /*
  * Copyright (C) 2012 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 21 matching lines @@
 #include "config.h"
 #include "core/timing/PerformanceResourceTiming.h"
 
 #include "core/timing/PerformanceBase.h"
 #include "platform/network/ResourceRequest.h"
 #include "platform/network/ResourceResponse.h"
 #include "platform/network/ResourceTimingInfo.h"
 
 namespace blink {
 
+// TODO(majidvp): Should return DOMHighResTimeStamp type instead
 static double monotonicTimeToDOMHighResTimeStamp(double timeOrigin, double seconds)
 {
     ASSERT(seconds >= 0.0);
     if (!seconds || !timeOrigin)
         return 0.0;
     return PerformanceBase::clampTimeResolution(seconds - timeOrigin) * 1000.0;
 }
 
 PerformanceResourceTiming::PerformanceResourceTiming(const ResourceTimingInfo& info, double timeOrigin, double startTime, double lastRedirectEndTime, bool allowTimingDetails, bool allowRedirectDetails)
     : PerformanceEntry(info.initialRequest().url().string(), "resource", monotonicTimeToDOMHighResTimeStamp(timeOrigin, startTime), monotonicTimeToDOMHighResTimeStamp(timeOrigin, info.loadFinishTime()))
@@ skipping 154 matching lines @@
 
 double PerformanceResourceTiming::responseEnd() const
 {
     if (!m_finishTime)
         return responseStart();
 
     return monotonicTimeToDOMHighResTimeStamp(m_timeOrigin, m_finishTime);
 }
 
 } // namespace blink