Rename RenderStyle::diff and RenderStyle::compare to better names

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 1598 matching lines @@
 
 StyleRecalcChange Element::recalcOwnStyle(StyleRecalcChange change)
 {
     ASSERT(document().inStyleRecalc());
     ASSERT(!parentOrShadowHostNode()->needsStyleRecalc());
     ASSERT(change >= Inherit || needsStyleRecalc());
     ASSERT(parentRenderStyle());
 
     RefPtr<RenderStyle> oldStyle = renderStyle();
     RefPtr<RenderStyle> newStyle = styleForRenderer();
-    StyleRecalcChange localChange = RenderStyle::compare(oldStyle.get(), newStyle.get());
+    StyleRecalcChange localChange = RenderStyle::stylePropagationDiff(oldStyle.get(), newStyle.get());
 
     ASSERT(newStyle);
 
     if (localChange == Reattach) {
         AttachContext reattachContext;
         reattachContext.resolvedStyle = newStyle.get();
         bool rendererWillChange = needsAttach() || renderer();
         reattach(reattachContext);
         if (rendererWillChange || renderer())
             return Reattach;
@@ skipping 1776 matching lines @@
     // Before doing so, we need to resolve issues in HTMLSelectElement::recalcListItems
     // and RenderMenuList::setText. See also https://bugs.webkit.org/show_bug.cgi?id=88405
     if (isHTMLOptionElement(*this) || isHTMLOptGroupElement(*this))
         return false;
     if (FullscreenElementStack::isActiveFullScreenElement(this))
         return false;
     return true;
 }
 
 } // namespace WebCore