Remove almost all clients of isHTMLElement

sky/engine/core/editing/EditingStyle.cpp

 /*
  * Copyright (C) 2007, 2008, 2009 Apple Computer, Inc.
  * Copyright (C) 2010, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 441 matching lines @@
     DEFINE_STATIC_LOCAL(Vector<OwnPtr<HTMLElementEquivalent> >, HTMLElementEquivalents, ());
     return HTMLElementEquivalents;
 }
 
 static const Vector<OwnPtr<HTMLAttributeEquivalent> >& htmlAttributeEquivalents()
 {
     DEFINE_STATIC_LOCAL(Vector<OwnPtr<HTMLAttributeEquivalent> >, HTMLAttributeEquivalents, ());
     return HTMLAttributeEquivalents;
 }
 
-bool EditingStyle::elementIsStyledSpanOrHTMLEquivalent(const HTMLElement* element)
+bool EditingStyle::elementIsStyledSpanOrHTMLEquivalent(const Element* element)
 {
     ASSERT(element);
     bool elementIsSpanOrElementEquivalent = false;
     const Vector<OwnPtr<HTMLElementEquivalent> >& HTMLElementEquivalents = htmlElementEquivalents();
     size_t i;
     for (i = 0; i < HTMLElementEquivalents.size(); ++i) {
         if (HTMLElementEquivalents[i]->matches(element)) {
             elementIsSpanOrElementEquivalent = true;
             break;
         }
@@ skipping 105 matching lines @@
 {
     for (Node* ancestor = node; ancestor; ancestor = ancestor->parentNode()) {
         RefPtr<CSSComputedStyleDeclaration> ancestorStyle = CSSComputedStyleDeclaration::create(ancestor);
         if (!hasTransparentBackgroundColor(ancestorStyle.get()))
             return ancestorStyle->getPropertyCSSValue(CSSPropertyBackgroundColor);
     }
     return nullptr;
 }
 
 }