Refactored extensionOptions to use the new guestViewAttributes module.

extensions/renderer/resources/guest_view/web_view/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.
 
 // This module implements WebView (<webview>) as a custom element that wraps a
 // BrowserPlugin object element. The object element is hidden within
 // the shadow DOM of the WebView element.
 
 var DocumentNatives = requireNative('document_natives');
 var GuestView = require('guestView').GuestView;
 var GuestViewContainer = require('guestViewContainer').GuestViewContainer;
 var GuestViewInternalNatives = requireNative('guest_view_internal');
 var WebViewConstants = require('webViewConstants').WebViewConstants;
 var WebViewEvents = require('webViewEvents').WebViewEvents;
 var WebViewInternal = require('webViewInternal').WebViewInternal;
 
 // Represents the internal state of <webview>.
 function WebViewImpl(webviewElement) {
   GuestViewContainer.call(this, webviewElement, 'webview');
 
-  this.setupWebViewAttributes();
   this.setupElementProperties();
-
   new WebViewEvents(this, this.viewInstanceId);
 }
 
 WebViewImpl.prototype.__proto__ = GuestViewContainer.prototype;
 
 WebViewImpl.VIEW_TYPE = 'WebView';
 
 // Add extra functionality to |this.element|.
 WebViewImpl.setupElement = function(proto) {
   // Public-facing API methods.
@@ skipping 57 matching lines @@
         return this.guest.getContentWindow();
       }
       window.console.error(
           WebViewConstants.ERROR_MSG_CONTENTWINDOW_NOT_AVAILABLE);
     }.bind(this),
     // No setter.
     enumerable: true
   });
 };
 
-// This observer monitors mutations to attributes of the <webview>.
-WebViewImpl.prototype.handleAttributeMutation = function(
-    attributeName, oldValue, newValue) {
-  if (!this.attributes[attributeName]) {
-    return;
-  }
-
-  // Let the changed attribute handle its own mutation;
-  this.attributes[attributeName].maybeHandleMutation(oldValue, newValue);
-};
-
 WebViewImpl.prototype.onSizeChanged = function(webViewEvent) {
   var newWidth = webViewEvent.newWidth;
   var newHeight = webViewEvent.newHeight;
 
   var element = this.element;
 
   var width = element.offsetWidth;
   var height = element.offsetHeight;
 
   // Check the current bounds to make sure we do not resize <webview>
@@ skipping 102 matching lines @@
   }.bind(this));
 };
 
 // Implemented when the ChromeWebView API is available.
 WebViewImpl.prototype.maybeSetupContextMenus = function() {};
 
 GuestViewContainer.registerElement(WebViewImpl);
 
 // Exports.
 exports.WebViewImpl = WebViewImpl;