Minimize calls to Node::nodeType() as it is virtual

Source/core/inspector/InspectorStyleSheet.cpp

 /*
  * Copyright (C) 2010, 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 1513 matching lines @@
         return false;
 
     bool base64Encoded;
     bool success = m_resourceAgent->fetchResourceContent(ownerDocument()->frame(), KURL(ParsedURLString, m_pageStyleSheet->href()), result, &base64Encoded) && !base64Encoded;
     return success;
 }
 
 bool InspectorStyleSheet::inlineStyleSheetText(String* result) const
 {
     Node* ownerNode = m_pageStyleSheet->ownerNode();
-    if (!ownerNode || ownerNode->nodeType() != Node::ELEMENT_NODE)
+    if (!ownerNode || !ownerNode->isElementNode())
         return false;
     Element& ownerElement = toElement(*ownerNode);
 
     if (!isHTMLStyleElement(ownerElement) && !isSVGStyleElement(ownerElement))
         return false;
     *result = ownerElement.textContent();
     return true;
 }
 
 PassRefPtr<InspectorStyleSheetForInlineStyle> InspectorStyleSheetForInlineStyle::create(const String& id, PassRefPtr<Element> element, Listener* listener)
@@ skipping 120 matching lines @@
 
     RefPtrWillBeRawPtr<MutableStylePropertySet> tempDeclaration = MutableStylePropertySet::create();
     RuleSourceDataList ruleSourceDataResult;
     StyleSheetHandler handler(m_styleText, &m_element->document(), m_element->document().elementSheet().contents(), &ruleSourceDataResult);
     BisonCSSParser(parserContextForDocument(&m_element->document())).parseDeclaration(tempDeclaration.get(), m_styleText, &handler, m_element->document().elementSheet().contents());
     return ruleSourceDataResult.first().release();
 }
 
 } // namespace WebCore