Revert 186643 - Caused a 10% regression on SunSpider benchmark

chrome/renderer/resources/extensions/web_view.js

 // Copyright (c) 2012 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.
 
 // Shim that simulates a <webview> tag via Mutation Observers.
 //
 // The actual tag is implemented via the browser plugin. The internals of this
 // are hidden via Shadow DOM.
 
-var watchForTag = require('tagWatcher').watchForTag;
-
-var chrome = requireNative('chrome').GetChrome();
+var watchForTag = require("tagWatcher").watchForTag;
 
 var WEB_VIEW_ATTRIBUTES = ['name', 'src', 'partition', 'autosize', 'minheight',
     'minwidth', 'maxheight', 'maxwidth'];
 
 // All exposed api methods for <webview>, these are forwarded to the browser
 // plugin.
 var WEB_VIEW_API_METHODS = [
   'back',
   'canGoBack',
   'canGoForward',
@@ skipping 165 matching lines @@
  */
 WebView.prototype.maybeSetupPermissionEvent_ = function() {};
 
 /**
  * Implemented when experimental permission is available.
  * @private
  */
 WebView.prototype.maybeSetupExecuteScript_ = function() {};
 
 exports.WebView = WebView;