Use StringBuilder::appendLiteral() / StringBuilder::append(char) when possible

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 1623 matching lines @@
 static void appendAttributeDesc(const Node* node, StringBuilder& stringBuilder, const QualifiedName& name, const char* attrDesc)
 {
     if (!node->isElementNode())
         return;
 
     String attr = toElement(node)->getAttribute(name);
     if (attr.isEmpty())
         return;
 
     stringBuilder.append(attrDesc);
-    stringBuilder.append("=\"");
+    stringBuilder.appendLiteral("=\"");
     stringBuilder.append(attr);
-    stringBuilder.append("\"");
+    stringBuilder.appendLiteral("\"");
 }
 
 void Node::showNode(const char* prefix) const
 {
     if (!prefix)
         prefix = "";
     if (isTextNode()) {
         String value = nodeValue();
         value.replaceWithLiteral('\\', "\\\\");
         value.replaceWithLiteral('\n', "\\n");
@@ skipping 819 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif