Update Element API for CSSOM smooth scrolling to match the spec

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 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
@@ skipping 42 matching lines @@
 class ElementRareData;
 class ElementShadow;
 class ExceptionState;
 class Image;
 class InputMethodContext;
 class IntSize;
 class Locale;
 class MutableStylePropertySet;
 class PropertySetCSSStyleDeclaration;
 class PseudoElement;
+class ScrollToOptions;
 class ShadowRoot;
 class StylePropertySet;
 
 enum SpellcheckAttributeState {
     SpellcheckAttributeTrue,
     SpellcheckAttributeFalse,
     SpellcheckAttributeDefault
 };
 
 enum ElementFlags {
@@ skipping 102 matching lines @@
     Element* offsetParentForBindings();
 
     Element* offsetParent();
     int clientLeft();
     int clientTop();
     int clientWidth();
     int clientHeight();
     virtual double scrollLeft();
     virtual double scrollTop();
     virtual void setScrollLeft(double);
-    virtual void setScrollLeft(const Dictionary& scrollOptionsHorizontal, ExceptionState&);
     virtual void setScrollTop(double);
-    virtual void setScrollTop(const Dictionary& scrollOptionsVertical, ExceptionState&);
     virtual int scrollWidth();
     virtual int scrollHeight();
 
+    virtual void scrollBy(double x, double y);
+    virtual void scrollBy(const ScrollToOptions&);
+    virtual void scrollTo(double x, double y);
+    virtual void scrollTo(const ScrollToOptions&);
+    void scroll(double x, double y) { scrollTo(x, y); }
+    void scroll(const ScrollToOptions& scrollToOptions) { scrollTo(scrollToOptions); }
+
     IntRect boundsInRootViewSpace();
 
     PassRefPtrWillBeRawPtr<ClientRectList> getClientRects();
     PassRefPtrWillBeRawPtr<ClientRect> getBoundingClientRect();
 
     // Returns the absolute bounding box translated into screen coordinates:
     IntRect screenRect() const;
 
     virtual void didMoveToNewDocument(Document&) override;
 
@@ skipping 326 matching lines @@
     // parseAttribute (called via setAttribute()) and
     // svgAttributeChanged (called when element.className.baseValue is set)
     void classAttributeChanged(const AtomicString& newClassString);
 
     PassRefPtr<RenderStyle> originalStyleForRenderer();
 
     Node* insertAdjacent(const String& where, Node* newChild, ExceptionState&);
 
     virtual void parserDidSetAttributes() { };
 
+    void scrollRenderBoxBy(const ScrollToOptions&);
+    void scrollRenderBoxTo(const ScrollToOptions&);
+    void scrollFrameBy(const ScrollToOptions&);
+    void scrollFrameTo(const ScrollToOptions&);
+
 private:
     bool hasElementFlag(ElementFlags mask) const { return hasRareData() && hasElementFlagInternal(mask); }
     void setElementFlag(ElementFlags, bool value = true);
     void clearElementFlag(ElementFlags);
     bool hasElementFlagInternal(ElementFlags) const;
 
     bool isElementNode() const = delete; // This will catch anyone doing an unnecessary check.
     bool isDocumentFragment() const = delete; // This will catch anyone doing an unnecessary check.
     bool isDocumentNode() const = delete; // This will catch anyone doing an unnecessary check.
 
@@ skipping 319 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h