Decouple WebViewImpl from WebView attributes

extensions/renderer/resources/guest_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 43 matching lines @@
           createDefaultApiMethod(apiMethods[i]);
     }
   }
 
   // Forward proto.foo* method calls to WebViewImpl.foo*.
   GuestViewContainer.forwardApiMethods(proto, apiMethods);
 };
 
 // Initiates navigation once the <webview> element is attached to the DOM.
 WebViewImpl.prototype.onElementAttached = function() {
-  this.attributes[WebViewConstants.ATTRIBUTE_SRC].parse();
+  for (var i in this.attributes) {
+    this.attributes[i].attach();
+  }
 };
 
 // Resets some state upon detaching <webview> element from the DOM.
 WebViewImpl.prototype.onElementDetached = function() {
   this.guest.destroy();
   for (var i in this.attributes) {
-    this.attributes[i].reset();
+    this.attributes[i].detach();
   }
 };
 
 // Sets the <webview>.request property.
 WebViewImpl.prototype.setRequestPropertyOnWebViewElement = function(request) {
   Object.defineProperty(
       this.element,
       'request',
       {
         value: request,
@@ skipping 149 matching lines @@
 WebViewImpl.prototype.setupExperimentalContextMenus = function() {};
 WebViewImpl.prototype.maybeSetupExperimentalChromeWebViewEvents =
   function(request) {
     return request;
 };
 
 GuestViewContainer.registerElement(WebViewImpl);
 
 // Exports.
 exports.WebViewImpl = WebViewImpl;