Add time stamp to the constructor of the events

third_party/WebKit/Source/core/events/MouseEvent.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 211 matching lines @@
                          : PositionType::kPosition),
       button_(button),
       buttons_(buttons),
       related_target_(related_target),
       synthetic_event_type_(synthetic_event_type),
       region_(region) {
   InitCoordinatesFromRootFrame(window_x, window_y);
 }
 
 MouseEvent::MouseEvent(const AtomicString& event_type,
-                       const MouseEventInit& initializer)
-    : UIEventWithKeyState(event_type, initializer),
+                       const MouseEventInit& initializer,
+                       TimeTicks platform_time_stamp)
+    : UIEventWithKeyState(event_type, initializer, platform_time_stamp),
       screen_location_(
           DoublePoint(initializer.screenX(), initializer.screenY())),
       movement_delta_(
           IntPoint(initializer.movementX(), initializer.movementY())),
       position_type_(PositionType::kPosition),
       button_(initializer.button()),
       buttons_(initializer.buttons()),
       related_target_(initializer.relatedTarget()),
       synthetic_event_type_(kRealOrIndistinguishable),
       region_(initializer.region()) {
@@ skipping 331 matching lines @@
 
 int MouseEvent::offsetY() {
   if (!HasPosition())
     return 0;
   if (!has_cached_relative_position_)
     ComputeRelativePosition();
   return std::round(offset_location_.Y());
 }
 
 }  // namespace blink