Devtools UI: Fix edit as html shortcut regression

Source/devtools/front_end/elements/ElementsPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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 152 matching lines @@
         this._forceElementStateButton.setEnabled(node.nodeType() === Node.ELEMENT_NODE && !node.pseudoType());
         this._forceElementStateButton.setToggled(!!WebInspector.CSSStyleModel.fromNode(node).pseudoState(node).length);
     },
 
     _toggleEditAsHTML: function()
     {
         var node = this.selectedDOMNode();
         var treeOutline = this._treeOutlineForNode(node);
         if (!node || !treeOutline)
             return;
-        var startEditing = !this._editAsHTMLButton.toggled();
+
+        var startEditing = true;
+        if (Runtime.experiments.isEnabled("materialDesign")) {
+            startEditing = !this._editAsHTMLButton.toggled();
+            this._editAsHTMLButton.setToggled(startEditing);
+        }
         treeOutline.toggleEditAsHTML(node, startEditing, this._updateToolbarButtons.bind(this));
-        this._editAsHTMLButton.setToggled(startEditing);
     },
 
     /**
      * @param {!WebInspector.ContextMenu} contextMenu
      */
     _showBreakpointsMenu: function(contextMenu)
     {
         var node = this.selectedDOMNode();
         if (!node)
             return;
@@ skipping 1066 matching lines @@
     /**
      * @override
      * @param {!WebInspector.DOMNode} node
      * @return {?string}
      */
     decorate: function(node)
     {
         return WebInspector.UIString("Element is hidden");
     }
 }