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

third_party/WebKit/Source/devtools/front_end/resources/DatabaseQueryView.js

 /*
  * Copyright (C) 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 
     this.element.classList.add("storage-view", "query", "monospace");
     this.element.addEventListener("selectstart", this._selectStart.bind(this), false);
 
     this._promptElement = createElement("div");
     this._promptElement.className = "database-query-prompt";
     this._promptElement.appendChild(createElement("br"));
     this._promptElement.addEventListener("keydown", this._promptKeyDown.bind(this), true);
     this.element.appendChild(this._promptElement);
 
-    this._prompt = new WebInspector.TextPrompt(this.completions.bind(this), " ");
+    this._prompt = new WebInspector.TextPrompt();
+    this._prompt.initialize(this.completions.bind(this), " ");
     this._proxyElement = this._prompt.attach(this._promptElement);
 
     this.element.addEventListener("click", this._messagesClicked.bind(this), true);
 };
 
 /** @enum {symbol} */
 WebInspector.DatabaseQueryView.Events = {
     SchemaUpdated: Symbol("SchemaUpdated")
 };
 
@@ skipping 139 matching lines @@
         element.appendChild(commandTextElement);
 
         var resultElement = createElement("div");
         resultElement.className = "database-query-result";
         element.appendChild(resultElement);
         return resultElement;
     },
 
     __proto__: WebInspector.VBox.prototype
 };