DevTools: get rid of Element.prototype.removeMatchingStyleClasses

Source/devtools/front_end/ui/DOMExtension.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2012 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.
@@ skipping 138 matching lines @@
     var node = this.traverseNextTextNode(this);
     while (node && offset > node.nodeValue.length) {
         offset -= node.nodeValue.length;
         node = node.traverseNextTextNode(this);
     }
     if (!node)
         return { container: this, offset: 0 };
     return { container: node, offset: offset };
 }
 
-Element.prototype.removeMatchingStyleClasses = function(classNameRegex)
-{
-    var regex = new RegExp("(^|\\s+)" + classNameRegex + "($|\\s+)");
-    if (regex.test(this.className))
-        this.className = this.className.replace(regex, " ");
-}
-
 /**
  * @param {number|undefined} x
  * @param {number|undefined} y
  * @param {!Element=} relativeTo
  */
 Element.prototype.positionAt = function(x, y, relativeTo)
 {
     var shift = {x: 0, y: 0};
     if (relativeTo)
        shift = relativeTo.boxInWindow(this.ownerDocument.defaultView);
@@ skipping 576 matching lines @@
  */
 function isEnterKey(event) {
     // Check if in IME.
     return event.keyCode !== 229 && event.keyIdentifier === "Enter";
 }
 
 function consumeEvent(e)
 {
     e.consume();
 }