Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

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 23 matching lines @@
 MouseEventInit::MouseEventInit()
     : screenX(0)
     , screenY(0)
     , clientX(0)
     , clientY(0)
     , ctrlKey(false)
     , altKey(false)
     , shiftKey(false)
     , metaKey(false)
     , button(0)
-    , relatedTarget(0)
+    , relatedTarget(nullptr)
 {
 }
 
 PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& type, const MouseEventInit& initializer)
 {
     return adoptRef(new MouseEvent(type, initializer));
 }
 
 PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, const PlatformMouseEvent& event, int detail, PassRefPtr<Node> relatedTarget)
 {
     ASSERT(event.type() == PlatformEvent::MouseMoved || event.button() != NoButton);
 
     bool isMouseEnterOrLeave = eventType == EventTypeNames::mouseenter || eventType == EventTypeNames::mouseleave;
     bool isCancelable = !isMouseEnterOrLeave;
     bool isBubbling = !isMouseEnterOrLeave;
 
     return MouseEvent::create(eventType, isBubbling, isCancelable, view,
         detail, event.globalPosition().x(), event.globalPosition().y(), event.position().x(), event.position().y(),
         event.movementDelta().x(), event.movementDelta().y(),
         event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.button(),
-        relatedTarget, 0, false);
+        relatedTarget, nullptr, false);
 }
 
 PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view,
     int detail, int screenX, int screenY, int pageX, int pageY,
     int movementX, int movementY,
     bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button,
     PassRefPtr<EventTarget> relatedTarget, PassRefPtr<Clipboard> clipboard, bool isSimulated)
 {
     return adoptRef(new MouseEvent(type, canBubble, cancelable, view,
         detail, screenX, screenY, pageX, pageY,
@@ skipping 27 matching lines @@
 }
 
 MouseEvent::MouseEvent(const AtomicString& eventType, const MouseEventInit& initializer)
     : MouseRelatedEvent(eventType, initializer.bubbles, initializer.cancelable, initializer.view, initializer.detail, IntPoint(initializer.screenX, initializer.screenY),
         IntPoint(0 /* pageX */, 0 /* pageY */),
         IntPoint(0 /* movementX */, 0 /* movementY */),
         initializer.ctrlKey, initializer.altKey, initializer.shiftKey, initializer.metaKey, false /* isSimulated */)
     , m_button(initializer.button == (unsigned short)-1 ? 0 : initializer.button)
     , m_buttonDown(initializer.button != (unsigned short)-1)
     , m_relatedTarget(initializer.relatedTarget)
-    , m_clipboard(0 /* clipboard */)
+    , m_clipboard(nullptr /* clipboard */)
 {
     ScriptWrappable::init(this);
     initCoordinates(IntPoint(initializer.clientX, initializer.clientY));
 }
 
 MouseEvent::~MouseEvent()
 {
 }
 
 void MouseEvent::initMouseEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view,
@@ skipping 71 matching lines @@
     return adoptRef(new SimulatedMouseEvent(eventType, view, underlyingEvent));
 }
 
 SimulatedMouseEvent::~SimulatedMouseEvent()
 {
 }
 
 SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent)
     : MouseEvent(eventType, true, true, view, 0, 0, 0, 0, 0,
                  0, 0,
-                 false, false, false, false, 0, 0, 0, true)
+                 false, false, false, false, 0, nullptr, nullptr, true)
 {
     if (UIEventWithKeyState* keyStateEvent = findEventWithKeyState(underlyingEvent.get())) {
         m_ctrlKey = keyStateEvent->ctrlKey();
         m_altKey = keyStateEvent->altKey();
         m_shiftKey = keyStateEvent->shiftKey();
         m_metaKey = keyStateEvent->metaKey();
     }
     setUnderlyingEvent(underlyingEvent);
 
     if (this->underlyingEvent() && this->underlyingEvent()->isMouseEvent()) {
@@ skipping 52 matching lines @@
                                      event()->button(), relatedTarget);
     if (event()->defaultHandled())
         doubleClickEvent->setDefaultHandled();
     EventDispatcher::dispatchEvent(dispatcher->node(), MouseEventDispatchMediator::create(doubleClickEvent));
     if (doubleClickEvent->defaultHandled() || doubleClickEvent->defaultPrevented())
         return false;
     return !swallowEvent;
 }
 
 } // namespace WebCore