Revert of Remove WebElement::hasTagName.

public/web/WebElement.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
         WebElement() : WebNode() { }
         WebElement(const WebElement& e) : WebNode(e) { }
 
         WebElement& operator=(const WebElement& e) { WebNode::assign(e); return *this; }
         void assign(const WebElement& e) { WebNode::assign(e); }
 
         BLINK_EXPORT bool isFormControlElement() const;
         BLINK_EXPORT bool isTextFormControlElement() const;
         // Returns the qualified name, which may contain a prefix and a colon.
         BLINK_EXPORT WebString tagName() const;
+        // Check if this element has the specified qualified name. This function
+        // doesn't makes much sense because we have no ways to check namespace
+        // URI. Do not use this.
+        BLINK_EXPORT bool hasTagName(const WebString&) const;
         // Check if this element has the specified local tag name, and the HTML
         // namespace. Tag name matching is case-insensitive.
         BLINK_EXPORT bool hasHTMLTagName(const WebString&) const;
         BLINK_EXPORT bool hasAttribute(const WebString&) const;
         BLINK_EXPORT void removeAttribute(const WebString&);
         BLINK_EXPORT WebString getAttribute(const WebString&) const;
         BLINK_EXPORT bool setAttribute(const WebString& name, const WebString& value);
         BLINK_EXPORT WebString innerText();
         BLINK_EXPORT void requestFullScreen();
         BLINK_EXPORT WebString attributeLocalName(unsigned index) const;
@@ skipping 20 matching lines @@
 #if BLINK_IMPLEMENTATION
         WebElement(const PassRefPtrWillBeRawPtr<WebCore::Element>&);
         WebElement& operator=(const PassRefPtrWillBeRawPtr<WebCore::Element>&);
         operator PassRefPtrWillBeRawPtr<WebCore::Element>() const;
 #endif
     };
 
 } // namespace blink
 
 #endif