Split Dictionary's get and convert into DictionaryHelper.

Source/core/dom/Element.cpp

 /*
  * 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)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 693 matching lines @@
             return;
 
         view->setScrollPosition(IntPoint(roundf(newLeft * frame->pageZoomFactor()), view->scrollY()));
     }
 }
 
 void Element::setScrollLeft(const Dictionary& scrollOptionsHorizontal, ExceptionState& exceptionState)
 {
     String scrollBehaviorString;
     ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
-    if (scrollOptionsHorizontal.get("behavior", scrollBehaviorString)) {
+    if (DictionaryHelper::get(scrollOptionsHorizontal, "behavior", scrollBehaviorString)) {
         if (!ScrollableArea::scrollBehaviorFromString(scrollBehaviorString, scrollBehavior)) {
             exceptionState.throwTypeError("The ScrollBehavior provided is invalid.");
             return;
         }
     }
 
     int position;
-    if (!scrollOptionsHorizontal.get("x", position)) {
+    if (!DictionaryHelper::get(scrollOptionsHorizontal, "x", position)) {
         exceptionState.throwTypeError("ScrollOptionsHorizontal must include an 'x' member.");
         return;
     }
 
     // FIXME: Use scrollBehavior to decide whether to scroll smoothly or instantly.
     setScrollLeft(position);
 }
 
 void Element::setScrollTop(int newTop)
 {
@@ skipping 17 matching lines @@
             return;
 
         view->setScrollPosition(IntPoint(view->scrollX(), roundf(newTop * frame->pageZoomFactor())));
     }
 }
 
 void Element::setScrollTop(const Dictionary& scrollOptionsVertical, ExceptionState& exceptionState)
 {
     String scrollBehaviorString;
     ScrollBehavior scrollBehavior = ScrollBehaviorAuto;
-    if (scrollOptionsVertical.get("behavior", scrollBehaviorString)) {
+    if (DictionaryHelper::get(scrollOptionsVertical, "behavior", scrollBehaviorString)) {
         if (!ScrollableArea::scrollBehaviorFromString(scrollBehaviorString, scrollBehavior)) {
             exceptionState.throwTypeError("The ScrollBehavior provided is invalid.");
             return;
         }
     }
 
     int position;
-    if (!scrollOptionsVertical.get("y", position)) {
+    if (!DictionaryHelper::get(scrollOptionsVertical, "y", position)) {
         exceptionState.throwTypeError("ScrollOptionsVertical must include a 'y' member.");
         return;
     }
 
     // FIXME: Use scrollBehavior to decide whether to scroll smoothly or instantly.
     setScrollTop(position);
 }
 
 int Element::scrollWidth()
 {
@@ skipping 2566 matching lines @@
 
 void Element::trace(Visitor* visitor)
 {
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
     ContainerNode::trace(visitor);
 }
 
 } // namespace WebCore