DevTools: Get rid of Element.prototype.enableStyleClass

Source/devtools/front_end/InplaceFormatterEditorAction.js

 
 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @implements {WebInspector.SourcesPanel.EditorAction}
  */
 WebInspector.InplaceFormatterEditorAction = function()
@@ skipping 18 matching lines @@
         var wasSelected = /** @type {boolean} */ (event.data.wasSelected);
         if (wasSelected)
             this._updateButton(null);
     },
 
     /**
      * @param {?WebInspector.UISourceCode} uiSourceCode
      */
     _updateButton: function(uiSourceCode)
     {
-        this._button.element.enableStyleClass("hidden", !this._isFormattable(uiSourceCode));
+        this._button.element.classList.toggle("hidden", !this._isFormattable(uiSourceCode));
     },
 
     /**
      * @param {!WebInspector.SourcesPanel} panel
      * @return {!Element}
      */
     button: function(panel)
     {
         if (this._button)
             return this._button.element;
@@ skipping 56 matching lines @@
             var start = [0, 0];
             if (sourceFrame) {
                 var selection = sourceFrame.selection();
                 start = formatterMapping.originalToFormatted(selection.startLine, selection.startColumn);
             }
             uiSourceCode.setWorkingCopy(formattedContent);
             this._panel.showUISourceCode(uiSourceCode, start[0], start[1]);
         }
     },
 }