<webview>: Expose transparency API

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.
 
 'use strict';
@@ skipping 16 matching lines @@
 // API can access it and not external developers.
 var secret = {};
 
 var WEB_VIEW_ATTRIBUTE_MAXHEIGHT = 'maxheight';
 var WEB_VIEW_ATTRIBUTE_MAXWIDTH = 'maxwidth';
 var WEB_VIEW_ATTRIBUTE_MINHEIGHT = 'minheight';
 var WEB_VIEW_ATTRIBUTE_MINWIDTH = 'minwidth';
 
 /** @type {Array.<string>} */
 var WEB_VIEW_ATTRIBUTES = [
+    'allowtransparency',
+    'autosize',
     'name',
     'partition',
-    'autosize',
     WEB_VIEW_ATTRIBUTE_MINHEIGHT,
     WEB_VIEW_ATTRIBUTE_MINWIDTH,
     WEB_VIEW_ATTRIBUTE_MAXHEIGHT,
     WEB_VIEW_ATTRIBUTE_MAXWIDTH
 ];
 
 var CreateEvent = function(name) {
   var eventOpts = {supportsListeners: true, supportsFilters: true};
   return new EventBindings.Event(name, undefined, eventOpts);
 };
@@ skipping 990 matching lines @@
  * Implemented when the experimental API is available.
  * @private
  */
 WebViewInternal.prototype.maybeGetExperimentalPermissions_ = function() {
   return [];
 };
 
 exports.WebView = WebView;
 exports.WebViewInternal = WebViewInternal;
 exports.CreateEvent = CreateEvent;