[DevTools] Replace usages of document with custom functions.

Source/devtools/front_end/sources/RevisionHistoryView.js

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 191 matching lines @@
  * @param {boolean} allowRevert
  */
 WebInspector.RevisionHistoryTreeElement = function(revision, baseRevision, allowRevert)
 {
     TreeElement.call(this, revision.timestamp.toLocaleTimeString(), null, true);
     this.selectable = false;
 
     this._revision = revision;
     this._baseRevision = baseRevision;
 
-    this._revertElement = document.createElement("span");
+    this._revertElement = createElement("span");
     this._revertElement.className = "revision-history-link";
     this._revertElement.textContent = WebInspector.UIString("apply revision content");
     this._revertElement.addEventListener("click", this._revision.revertToThis.bind(this._revision), false);
     if (!allowRevert)
         this._revertElement.classList.add("hidden");
 }
 
 WebInspector.RevisionHistoryTreeElement.prototype = {
     onattach: function()
     {
@@ skipping 80 matching lines @@
      * @param {?number} baseLineNumber
      * @param {?number} newLineNumber
      * @param {string} lineContent
      * @param {string} changeType
      */
     _createLine: function(baseLineNumber, newLineNumber, lineContent, changeType)
     {
         var child = new TreeElement("", null, false);
         child.selectable = false;
         this.appendChild(child);
-        var lineElement = document.createElement("span");
+        var lineElement = createElement("span");
 
         function appendLineNumber(lineNumber)
         {
             var numberString = lineNumber !== null ? numberToStringWithSpacesPadding(lineNumber + 1, 4) : spacesPadding(4);
-            var lineNumberSpan = document.createElement("span");
+            var lineNumberSpan = createElement("span");
             lineNumberSpan.classList.add("webkit-line-number");
             lineNumberSpan.textContent = numberString;
             child.listItemElement.appendChild(lineNumberSpan);
         }
 
         appendLineNumber(baseLineNumber);
         appendLineNumber(newLineNumber);
 
-        var contentSpan = document.createElement("span");
+        var contentSpan = createElement("span");
         contentSpan.textContent = lineContent;
         child.listItemElement.appendChild(contentSpan);
         child.listItemElement.classList.add("revision-history-line");
         contentSpan.classList.add("revision-history-line-" + changeType);
     },
 
     allowRevert: function()
     {
         this._revertElement.classList.remove("hidden");
     },
 
     __proto__: TreeElement.prototype
 }