Fixed the <webview> context menu bug.

chrome/renderer/resources/extensions/chrome_web_view.js

 // Copyright 2014 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 chrome-specific <webview> API.
 
 var ChromeWebView = require('chromeWebViewInternal').ChromeWebView;
 var CreateEvent = require('guestViewEvents').CreateEvent;
 var EventBindings = require('event_bindings');
 var WebViewEvents = require('webViewEvents').WebViewEvents;
-var WebViewImpl = require('webView').WebViewImpl;
 
 var CHROME_WEB_VIEW_EVENTS = {
   'contextmenu': {
     evt: CreateEvent('chromeWebViewInternal.contextmenu'),
     cancelable: true,
-    customHandler: function(handler, event, webViewEvent) {
-      handler.webViewImpl.maybeHandleContextMenu(event, webViewEvent);
-    },
-    fields: ['items']
+    fields: ['items'],
+    handler: 'handleContextMenu'
   }
 };
 
 /**
  * Calls to show contextmenu right away instead of dispatching a 'contextmenu'
  * event.
  * This will be overridden in chrome_web_view_experimental.js to implement
  * contextmenu  API.
  */
-WebViewImpl.prototype.maybeHandleContextMenu = function(e, webViewEvent) {
-  var requestId = e.requestId;
+WebViewEvents.prototype.handleContextMenu = function(event) {
+  var requestId = event.requestId;
   // Setting |params| = undefined will show the context menu unmodified, hence
   // the 'contextmenu' API is disabled for stable channel.
   var params = undefined;
-  ChromeWebView.showContextMenu(this.guest.getId(), requestId, params);
+  ChromeWebView.showContextMenu(this.view.guest.getId(), requestId, params);
 };
 
 // Exposes |CHROME_WEB_VIEW_EVENTS| when the ChromeWebView API is available.
 (function() {
   for (var eventName in CHROME_WEB_VIEW_EVENTS) {
     WebViewEvents.EVENTS[eventName] = CHROME_WEB_VIEW_EVENTS[eventName];
   }
 })();