Add time stamp to the constructor of the events

third_party/WebKit/Source/core/events/Event.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 79 matching lines @@
       default_prevented_(false),
       default_handled_(false),
       was_initialized_(true),
       is_trusted_(false),
       prevent_default_called_on_uncancelable_event_(false),
       handling_passive_(PassiveMode::kNotPassiveDefault),
       event_phase_(0),
       current_target_(nullptr),
       platform_time_stamp_(platform_time_stamp) {}
 
-Event::Event(const AtomicString& event_type, const EventInit& initializer)
+Event::Event(const AtomicString& event_type,
+             const EventInit& initializer,
+             TimeTicks platform_time_stamp)
     : Event(event_type,
             initializer.bubbles(),
             initializer.cancelable(),
             initializer.composed() ? ComposedMode::kComposed
                                    : ComposedMode::kScoped,
-            TimeTicks::Now()) {}
+            platform_time_stamp) {}
 
 Event::~Event() {}
 
 bool Event::IsScopedInV0() const {
   return isTrusted() && is_event_type_scoped_in_v0_;
 }
 
 void Event::initEvent(const AtomicString& event_type_arg,
                       bool can_bubble_arg,
                       bool cancelable_arg) {
@@ skipping 243 matching lines @@
 }
 
 DEFINE_TRACE(Event) {
   visitor->Trace(current_target_);
   visitor->Trace(target_);
   visitor->Trace(underlying_event_);
   visitor->Trace(event_path_);
 }
 
 }  // namespace blink