[DevTools] Replace usages of document with custom functions.

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 20 matching lines @@
 {
     WebInspector.VBox.call(this);
 
     this.database = database;
 
     this.element.classList.add("storage-view");
     this.element.classList.add("query");
     this.element.classList.add("monospace");
     this.element.addEventListener("selectstart", this._selectStart.bind(this), false);
 
-    this._promptElement = document.createElement("div");
+    this._promptElement = createElement("div");
     this._promptElement.className = "database-query-prompt";
-    this._promptElement.appendChild(document.createElement("br"));
+    this._promptElement.appendChild(createElement("br"));
     this._promptElement.addEventListener("keydown", this._promptKeyDown.bind(this), true);
     this.element.appendChild(this._promptElement);
 
     this._prompt = new WebInspector.TextPromptWithHistory(this.completions.bind(this), " ");
     this._prompt.attach(this._promptElement);
 
     this.element.addEventListener("click", this._messagesClicked.bind(this), true);
 }
 
 WebInspector.DatabaseQueryView.Events = {
@@ skipping 127 matching lines @@
     {
         var resultElement = this._appendQueryResult(query);
         resultElement.classList.add("error")
         resultElement.textContent = errorText;
 
         this._promptElement.scrollIntoView(false);
     },
 
     _appendQueryResult: function(query)
     {
-        var element = document.createElement("div");
+        var element = createElement("div");
         element.className = "database-user-query";
         this.element.insertBefore(element, this._prompt.proxyElement);
 
-        var commandTextElement = document.createElement("span");
+        var commandTextElement = createElement("span");
         commandTextElement.className = "database-query-text";
         commandTextElement.textContent = query;
         element.appendChild(commandTextElement);
 
-        var resultElement = document.createElement("div");
+        var resultElement = createElement("div");
         resultElement.className = "database-query-result";
         element.appendChild(resultElement);
         return resultElement;
     },
 
     __proto__: WebInspector.VBox.prototype
 }