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

third_party/WebKit/Source/devtools/front_end/elements/StylesSidebarPane.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * 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
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 81 matching lines @@
 
     // Common IE-specific property prefix.
     if (name.startsWith("scrollbar-"))
         return true;
     if (hasUnknownVendorPrefix(name))
         return true;
 
     var value = property.value.toLowerCase();
 
     // IE hack.
-    if (value.endsWith("\9"))
+    if (value.endsWith("\\9"))

[dgozman, 2016/10/26 00:31:01]

Unrelated.

         return true;
     if (hasUnknownVendorPrefix(value))
         return true;
 
     return false;
 };
 
 WebInspector.StylesSidebarPane.prototype = {
     /**
      * @param {!WebInspector.Event} event
@@ skipping 2758 matching lines @@
 /**
  * @constructor
  * @extends {WebInspector.TextPrompt}
  * @param {!Array<string>} cssCompletions
  * @param {!WebInspector.StylePropertyTreeElement} treeElement
  * @param {boolean} isEditingName
  */
 WebInspector.StylesSidebarPane.CSSPropertyPrompt = function(cssCompletions, treeElement, isEditingName)
 {
     // Use the same callback both for applyItemCallback and acceptItemCallback.
-    WebInspector.TextPrompt.call(this, this._buildPropertyCompletions.bind(this), WebInspector.StyleValueDelimiters);
+    WebInspector.TextPrompt.call(this);
+    this.initialize(this._buildPropertyCompletions.bind(this), WebInspector.StyleValueDelimiters);
     this.setSuggestBoxEnabled(true);
     this._cssCompletions = cssCompletions;
     this._treeElement = treeElement;
     this._isEditingName = isEditingName;
 
     if (!isEditingName) {
         this.disableDefaultSuggestionForEmptyInput();
 
         // If a CSS value is being edited that has a numeric or hex substring, hint that precision modifier shortcuts are available.
         if (treeElement && treeElement.valueElement) {
@@ skipping 295 matching lines @@
 
     /**
      * @override
      * @return {!WebInspector.ToolbarItem}
      */
     item: function()
     {
         return this._button;
     }
 };