Use WTF::TimeTicks to represent timestamp in Platform/Core event types

third_party/WebKit/Source/core/events/UIEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 12 matching lines @@
 #include "core/events/UIEvent.h"
 
 namespace blink {
 
 UIEvent::UIEvent() : m_detail(0), m_sourceCapabilities(nullptr) {}
 
 UIEvent::UIEvent(const AtomicString& eventType,
                  bool canBubbleArg,
                  bool cancelableArg,
                  ComposedMode composedMode,
-                 double platformTimeStamp,
+                 TimeTicks platformTimeStamp,
                  AbstractView* viewArg,
                  int detailArg,
                  InputDeviceCapabilities* sourceCapabilitiesArg)
     : Event(eventType,
             canBubbleArg,
             cancelableArg,
             composedMode,
             platformTimeStamp),
       m_view(viewArg),
       m_detail(detailArg),
@@ skipping 46 matching lines @@
   return 0;
 }
 
 DEFINE_TRACE(UIEvent) {
   visitor->trace(m_view);
   visitor->trace(m_sourceCapabilities);
   Event::trace(visitor);
 }
 
 }  // namespace blink