DevTools: get rid of Element.prototype.removeMatchingStyleClasses

Source/devtools/front_end/network/NetworkPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 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
@@ skipping 2484 matching lines @@
  * @param {!WebInspector.NetworkRequest} request
  */
 WebInspector.NetworkDataGridNode = function(parentView, request)
 {
     WebInspector.SortableDataGridNode.call(this, {});
     this._parentView = parentView;
     this._request = request;
     this._linkifier = new WebInspector.Linkifier();
     this._isFilteredOut = true;
     this._isMatchingSearchQuery = false;
+    this._type = null;
 }
 
 WebInspector.NetworkDataGridNode.prototype = {
     /**
      * @override
      * @return {number}
      */
     nodeSelfHeight: function() {
         return this._parentView.rowHeight();
     },
 
     /** override */
     createCells: function()
     {
         this._nameCell = null;
         this._timelineCell = null;
 
         var element = this._element;
         element.classList.toggle("network-error-row", this._isFailed());
         element.classList.toggle("resource-cached", this._request.cached);
-        var typeClassName = "network-type-" + this._request.type.name();
-        if (!element.classList.contains(typeClassName)) {
-            element.removeMatchingStyleClasses("network-type-\\w+");
-            element.classList.add(typeClassName);
+        var type = this._request.type.name();
+        if (type != this._type) {
+            if (this._type)
+                element.classList.remove(this._type);
+            this._type = type;
+            element.classList.add(this._type);
         }
 
         WebInspector.SortableDataGridNode.prototype.createCells.call(this);
 
         this.refreshGraph(this._parentView.calculator());
     },
 
     /**
      * @override
      * @param {string} columnIdentifier
@@ skipping 499 matching lines @@
 WebInspector.NetworkDataGridNode.RequestPropertyComparator = function(propertyName, revert, a, b)
 {
     var aValue = a._request[propertyName];
     var bValue = b._request[propertyName];
     if (aValue > bValue)
         return revert ? -1 : 1;
     if (bValue > aValue)
         return revert ? 1 : -1;
     return a._request.indentityCompare(b._request);
 }