Drop slower Node::hasID() / Node::hasClass() methods

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1680 matching lines @@
 
     // No parent - no conversion needed
     return p;
 }
 
 String Node::debugName() const
 {
     StringBuilder name;
     name.append(nodeName());
 
-    if (hasID()) {
-        name.appendLiteral(" id=\'");
-        name.append(toElement(this)->getIdAttribute());
-        name.append('\'');
-    }
+    if (isElementNode()) {
+        const Element& thisElement = toElement(*this);
+        if (thisElement.hasID()) {
+            name.appendLiteral(" id=\'");
+            name.append(thisElement.getIdAttribute());
+            name.append('\'');
+        }
 
-    if (hasClass()) {
-        name.appendLiteral(" class=\'");
-        for (size_t i = 0; i < toElement(this)->classNames().size(); ++i) {
-            if (i > 0)
-                name.append(' ');
-            name.append(toElement(this)->classNames()[i]);
+        if (thisElement.hasClass()) {
+            name.appendLiteral(" class=\'");
+            for (size_t i = 0; i < thisElement.classNames().size(); ++i) {
+                if (i > 0)
+                    name.append(' ');
+                name.append(thisElement.classNames()[i]);
+            }
+            name.append('\'');
         }
-        name.append('\'');
     }
 
     return name.toString();
 }
 
 #ifndef NDEBUG
 
 static void appendAttributeDesc(const Node* node, StringBuilder& stringBuilder, const QualifiedName& name, const char* attrDesc)
 {
     if (!node->isElementNode())
@@ skipping 844 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif