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

third_party/WebKit/Source/core/events/KeyboardEvent.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, 2007 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 77 matching lines @@
 
 KeyboardEvent::KeyboardEvent(const WebKeyboardEvent& key,
                              LocalDOMWindow* domWindow)
     : UIEventWithKeyState(
           eventTypeForKeyboardEventType(key.type),
           true,
           true,
           domWindow,
           0,
           static_cast<PlatformEvent::Modifiers>(key.modifiers),
-          key.timeStampSeconds,
+          TimeTicks::FromSeconds(key.timeStampSeconds),
           InputDeviceCapabilities::doesntFireTouchEventsSourceCapabilities()),
       m_keyEvent(WTF::makeUnique<WebKeyboardEvent>(key)),
       // TODO(crbug.com/482880): Fix this initialization to lazy initialization.
       m_code(Platform::current()->domCodeStringFromEnum(key.domCode)),
       m_key(Platform::current()->domKeyStringFromEnum(key.domKey)),
       m_location(keyLocationCode(key)),
       m_isComposing(hasCurrentComposition(domWindow)) {
   initLocationModifiers(m_location);
 }
 
@@ skipping 93 matching lines @@
       m_modifiers |= PlatformEvent::IsRight;
       break;
   }
 }
 
 DEFINE_TRACE(KeyboardEvent) {
   UIEventWithKeyState::trace(visitor);
 }
 
 }  // namespace blink