Remove ASSERT_ARG().

third_party/WebKit/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 1500 matching lines @@
         }
     }
     return name.toString();
 }
 
 String Node::debugNodeName() const
 {
     return nodeName();
 }
 
-#ifndef NDEBUG
-
 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.appendLiteral("=\"");
     stringBuilder.append(attr);
     stringBuilder.appendLiteral("\"");
 }
 
+// |std::ostream| version of |Node::showNode|
+std::ostream& operator<<(std::ostream& ostream, const Node& node)
+{
+    ostream << node.nodeName();
+    if (node.isTextNode())
+        return ostream << " " << node.nodeValue();
+    StringBuilder attrs;
+    appendAttributeDesc(&node, attrs, HTMLNames::idAttr, " ID");
+    appendAttributeDesc(&node, attrs, HTMLNames::classAttr, " CLASS");
+    appendAttributeDesc(&node, attrs, HTMLNames::styleAttr, " STYLE");
+    return ostream << attrs.toString();
+}
+
+std::ostream& operator<<(std::ostream& ostream, const Node* node)
+{
+    if (!node)
+        return ostream << "null";
+    return ostream << *node;
+}
+
+#ifndef NDEBUG
+
 void Node::showNode(const char* prefix) const
 {
     if (!prefix)
         prefix = "";
     if (isTextNode()) {
         String value = nodeValue();
         value.replaceWithLiteral('\\', "\\\\");
         value.replaceWithLiteral('\n', "\\n");
         WTFLogAlways("%s%s\t%p \"%s\"\n", prefix, nodeName().utf8().data(), this, value.utf8().data());
     } else if (isDocumentTypeNode()) {
@@ skipping 881 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif