Use high precision timestamp for Event.timestamp

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 1345 matching lines @@
     m_provisionalDocumentLoader = m_policyDocumentLoader.release();
     m_loadType = type;
 
     if (frameLoadRequest.form())
         client()->dispatchWillSubmitForm(frameLoadRequest.form());
 
     m_progressTracker->progressStarted();
     if (m_provisionalDocumentLoader->isClientRedirect())
         m_provisionalDocumentLoader->appendRedirect(m_frame->document()->url());
     m_provisionalDocumentLoader->appendRedirect(m_provisionalDocumentLoader->request().url());
-    double triggeringEventTime = frameLoadRequest.triggeringEvent() ? convertDOMTimeStampToSeconds(frameLoadRequest.triggeringEvent()->timeStamp()) : 0;
+    double triggeringEventTime = frameLoadRequest.triggeringEvent() ? frameLoadRequest.triggeringEvent()->platformTimeStamp() : 0;
     client()->dispatchDidStartProvisionalLoad(triggeringEventTime);
     ASSERT(m_provisionalDocumentLoader);
     m_provisionalDocumentLoader->startLoadingMainResource();
 }
 
 void FrameLoader::applyUserAgent(ResourceRequest& request)
 {
     String userAgent = this->userAgent(request.url());
     ASSERT(!userAgent.isNull());
     request.setHTTPUserAgent(AtomicString(userAgent));
@@ skipping 145 matching lines @@
     // FIXME: We need a way to propagate insecure requests policy flags to
     // out-of-process frames. For now, we'll always use default behavior.
     if (!parentFrame->isLocalFrame())
         return nullptr;
 
     ASSERT(toLocalFrame(parentFrame)->document());
     return toLocalFrame(parentFrame)->document()->insecureNavigationsToUpgrade();
 }
 
 } // namespace blink