DevTools: do not allow using 'this' before call into super.

third_party/WebKit/Source/devtools/front_end/accessibility/AccessibilityNodeView.js

 // Copyright 2016 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
  * @extends {WebInspector.AccessibilitySubPane}
  */
 WebInspector.AXNodeSubPane = function()
 {
@@ skipping 106 matching lines @@
     __proto__: WebInspector.AccessibilitySubPane.prototype
 };
 
 /**
  * @constructor
  * @param {!WebInspector.AccessibilityNode} axNode
  * @extends {TreeElement}
  */
 WebInspector.AXNodePropertyTreeElement = function(axNode)
 {
-    this._axNode = axNode;
-
     // Pass an empty title, the title gets made later in onattach.
     TreeElement.call(this, "");
+    this._axNode = axNode;
 };
 
 /**
  * @param {?AccessibilityAgent.AXValueType} type
  * @param {string} value
  * @return {!Element}
  */
 WebInspector.AXNodePropertyTreeElement.createSimpleValueElement = function(type, value)
 {
     var valueElement;
@@ skipping 147 matching lines @@
 };
 
 /**
  * @constructor
  * @extends {WebInspector.AXNodePropertyTreeElement}
  * @param {!AccessibilityAgent.AXProperty} property
  * @param {!WebInspector.AccessibilityNode} axNode
  */
 WebInspector.AXNodePropertyTreePropertyElement = function(property, axNode)
 {
+    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
+
     this._property = property;
     this.toggleOnClick = true;
     this.selectable = false;
 
-    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
     this.listItemElement.classList.add("property");
 };
 
 WebInspector.AXNodePropertyTreePropertyElement.prototype = {
     /**
      * @override
      */
     onattach: function()
     {
         this._update();
@@ skipping 16 matching lines @@
 };
 
 /**
  * @constructor
  * @extends {WebInspector.AXNodePropertyTreeElement}
  * @param {!AccessibilityAgent.AXValueSource} source
  * @param {!WebInspector.AccessibilityNode} axNode
  */
 WebInspector.AXValueSourceTreeElement = function(source, axNode)
 {
+    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
     this._source = source;
-    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
     this.selectable = false;
 };
 
 WebInspector.AXValueSourceTreeElement.prototype = {
     /**
      * @override
      */
     onattach: function()
     {
         this._update();
@@ skipping 157 matching lines @@
 };
 
 /**
  * @constructor
  * @param {{deferredNode: (!WebInspector.DeferredDOMNode|undefined), idref: (string|undefined)}} node
  * @param {!AccessibilityAgent.AXRelatedNode=} value
  * @extends {TreeElement}
  */
 WebInspector.AXRelatedNodeSourceTreeElement = function(node, value)
 {
+    TreeElement.call(this, "");
+
     this._value = value;
     this._axRelatedNodeElement = new WebInspector.AXRelatedNodeElement(node, value);
-
-    TreeElement.call(this, "");
-
     this.selectable = false;
 };
 
 WebInspector.AXRelatedNodeSourceTreeElement.prototype = {
     /**
      * @override
      */
     onattach: function()
     {
         this.listItemElement.appendChild(this._axRelatedNodeElement.render());
@@ skipping 54 matching lines @@
 };
 
 /**
  * @constructor
  * @extends {WebInspector.AXNodePropertyTreeElement}
  * @param {!AccessibilityAgent.AXProperty} property
  * @param {!WebInspector.AccessibilityNode} axNode
  */
 WebInspector.AXNodeIgnoredReasonTreeElement = function(property, axNode)
 {
+    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
     this._property = property;
     this._axNode = axNode;
-
-    WebInspector.AXNodePropertyTreeElement.call(this, axNode);
     this.toggleOnClick = true;
     this.selectable = false;
 };
 
 WebInspector.AXNodeIgnoredReasonTreeElement.prototype = {
     /**
      * @override
      */
     onattach: function()
     {
@@ skipping 73 matching lines @@
         reasonElement = WebInspector.formatLocalized("Static text node is used as name for\u00a0", []);
         break;
     case "uninteresting":
         reasonElement = WebInspector.formatLocalized("Element not interesting for accessibility.", []);
         break;
     }
     if (reasonElement)
         reasonElement.classList.add("ax-reason");
     return reasonElement;
 };