Remove dead code backing WheelEvent.webkitDirectionInvertedFromDevice

Source/core/events/WheelEvent.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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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
@@ skipping 26 matching lines @@
     , wheelDeltaY(0)
     , deltaMode(WheelEvent::DOM_DELTA_PIXEL)
 {
 }
 
 WheelEvent::WheelEvent()
     : m_deltaX(0)
     , m_deltaY(0)
     , m_deltaZ(0)
     , m_deltaMode(DOM_DELTA_PIXEL)
-    , m_directionInvertedFromDevice(false)
 {
     ScriptWrappable::init(this);
 }
 
 WheelEvent::WheelEvent(const AtomicString& type, const WheelEventInit& initializer)
     : MouseEvent(type, initializer)
     , m_wheelDelta(initializer.wheelDeltaX ? initializer.wheelDeltaX : -initializer.deltaX, initializer.wheelDeltaY ? initializer.wheelDeltaY : -initializer.deltaY)
     , m_deltaX(initializer.deltaX ? initializer.deltaX : -initializer.wheelDeltaX)
     , m_deltaY(initializer.deltaY ? initializer.deltaY : -initializer.wheelDeltaY)
     , m_deltaZ(initializer.deltaZ)
     , m_deltaMode(initializer.deltaMode)
 {
     ScriptWrappable::init(this);
 }
 
 WheelEvent::WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta, unsigned deltaMode,
     PassRefPtrWillBeRawPtr<AbstractView> view, const IntPoint& screenLocation, const IntPoint& pageLocation,
-    bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool directionInvertedFromDevice)
+    bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
     : MouseEvent(EventTypeNames::wheel,
                  true, true, view, 0, screenLocation.x(), screenLocation.y(),
                  pageLocation.x(), pageLocation.y(),
                  0, 0,
                  ctrlKey, altKey, shiftKey, metaKey, 0, nullptr, nullptr, false)
     , m_wheelDelta(wheelTicks.x() * TickMultiplier, wheelTicks.y() * TickMultiplier)
     , m_deltaX(-rawDelta.x())
     , m_deltaY(-rawDelta.y())
     , m_deltaZ(0)
     , m_deltaMode(deltaMode)
-    , m_directionInvertedFromDevice(directionInvertedFromDevice)
 {
     ScriptWrappable::init(this);
 }
 
 void WheelEvent::initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView> view,
                                 int screenX, int screenY, int pageX, int pageY,
                                 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
 {
     if (dispatched())
         return;
 
     initUIEvent(EventTypeNames::wheel, true, true, view, 0);
 
     m_screenLocation = IntPoint(screenX, screenY);
     m_ctrlKey = ctrlKey;
     m_altKey = altKey;
     m_shiftKey = shiftKey;
     m_metaKey = metaKey;
 
     m_wheelDelta = IntPoint(rawDeltaX * TickMultiplier, rawDeltaY * TickMultiplier);
     m_deltaX = -rawDeltaX;
     m_deltaY = -rawDeltaY;
     m_deltaMode = DOM_DELTA_PIXEL;
-    m_directionInvertedFromDevice = false;
 
     initCoordinates(IntPoint(pageX, pageY));
 }
 
 void WheelEvent::initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtrWillBeRawPtr<AbstractView> view,
                                       int screenX, int screenY, int pageX, int pageY,
                                       bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
 {
     initWheelEvent(rawDeltaX, rawDeltaY, view, screenX, screenY, pageX, pageY,
                    ctrlKey, altKey, shiftKey, metaKey);
@@ skipping 29 matching lines @@
     return adoptRefWillBeNoop(new WheelEventDispatchMediator(event, view));
 }
 
 WheelEventDispatchMediator::WheelEventDispatchMediator(const PlatformWheelEvent& event, PassRefPtrWillBeRawPtr<AbstractView> view)
 {
     if (!(event.deltaX() || event.deltaY()))
         return;
 
     setEvent(WheelEvent::create(FloatPoint(event.wheelTicksX(), event.wheelTicksY()), FloatPoint(event.deltaX(), event.deltaY()),
         deltaMode(event), view, event.globalPosition(), event.position(),
-        event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.directionInvertedFromDevice()));
+        event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey()));
 }
 
 WheelEvent* WheelEventDispatchMediator::event() const
 {
     return toWheelEvent(EventDispatchMediator::event());
 }
 
 bool WheelEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
 {
     ASSERT(event());
     return EventDispatchMediator::dispatchEvent(dispatcher) && !event()->defaultHandled();
 }
 
 } // namespace blink