Extract the element implementation logic to function mods in <webview>.

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;
@@ skipping 119 matching lines @@
     element.style.width = newWidth + 'px';
     element.style.height = newHeight + 'px';
     // Only fire the DOM event if the size of the <webview> has actually
     // changed.
     this.dispatchEvent(webViewEvent);
   }
 };
 
 WebViewImpl.prototype.createGuest = function() {
   this.guest.create(this.buildParams(), function() {
-    this.attachWindow();
+    this.attachWindow$();
   }.bind(this));
 };
 
 WebViewImpl.prototype.onFrameNameChanged = function(name) {
   this.attributes[WebViewConstants.ATTRIBUTE_NAME].setValueIgnoreMutation(name);
 };
 
 // Updates state upon loadcommit.
 WebViewImpl.prototype.onLoadCommit = function(
     baseUrlForDataUrl, currentEntryIndex, entryCount,
@@ skipping 20 matching lines @@
   var params = { 'initialZoomFactor': this.cachedZoomFactor,
                  'userAgentOverride': this.userAgentOverride };
   for (var i in this.attributes) {
     var value = this.attributes[i].getValueIfDirty();
     if (value)
       params[i] = value;
   }
   return params;
 };
 
-WebViewImpl.prototype.attachWindow = function(opt_guestInstanceId) {
+WebViewImpl.prototype.attachWindow$ = function(opt_guestInstanceId) {
   // If |opt_guestInstanceId| was provided, then a different existing guest is
   // being attached to this webview, and the current one will get destroyed.
   if (opt_guestInstanceId) {
     if (this.guest.getId() == opt_guestInstanceId) {
       return true;
     }
     this.guest.destroy();
     this.guest = new GuestView('webview', opt_guestInstanceId);
   }
 
@@ skipping 25 matching lines @@
   }.bind(this));
 };
 
 // Implemented when the ChromeWebView API is available.
 WebViewImpl.prototype.maybeSetupContextMenus = function() {};
 
 GuestViewContainer.registerElement(WebViewImpl);
 
 // Exports.
 exports.WebViewImpl = WebViewImpl;