Improve <adview> implementation and add tests.

chrome/test/data/extensions/platform_apps/ad_view/change_ad_network/chrometest.js

Index: chrome/test/data/extensions/platform_apps/ad_view/change_ad_network/chrometest.js
diff --git a/chrome/test/data/extensions/platform_apps/ad_view/change_ad_network/chrometest.js b/chrome/test/data/extensions/platform_apps/ad_view/change_ad_network/chrometest.js
new file mode 100644
index 0000000000000000000000000000000000000000..24e3b45e0c62d2b2c53ae0404573bbca91f1f214
--- /dev/null
+++ b/chrome/test/data/extensions/platform_apps/ad_view/change_ad_network/chrometest.js
@@ -0,0 +1,46 @@
+// Copyright (c) 2013 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.
+
+function onLoadCommit(adview, guestURL) {
+  // First callback: assert and run another callback
+  if (adview.getAttribute('ad-network') == 'test') {
+    // Check 'src' and 'ad-network' attributes/properties
+    chrome.test.assertEq('test', adview.getAttribute('ad-network'));
+    chrome.test.assertEq('test', adview['ad-network']);
+    chrome.test.assertEq(guestURL, adview.getAttribute('src'));
+    chrome.test.assertEq(guestURL, adview.src);
+
+    adview['ad-network'] = '';
+    setTimeout(function() {
+      // Check 'src' and 'ad-network' attributes/properties
+      chrome.test.assertEq('', adview.getAttribute('ad-network'));
+      chrome.test.assertEq('', adview['ad-network']);
+      chrome.test.assertEq('', adview.getAttribute('src'));
+      chrome.test.assertEq('', adview.src);
+
+      adview['ad-network'] = 'test2';
+    }, 0);
+  }
+  // Second callback: assert and finish test
+  else if (adview.getAttribute('ad-network') == 'test2') {
+    // Check 'src' and 'ad-network' attributes/properties
+    chrome.test.assertEq('test2', adview.getAttribute('ad-network'));
+    chrome.test.assertEq('test2', adview['ad-network']);
+    chrome.test.assertEq('', adview.getAttribute('src'));
+    chrome.test.assertEq('', adview['src']);
+
+    chrome.test.sendMessage('test-finished');
+  }
+};
+
+chrome.test.getConfig(function(config) {
+  var guestURL = 'http://localhost:' + config.testServer.port +
+      '/files/extensions/platform_apps/ad_view/ad_network_site/testsdk.html';
+  var adview = document.getElementsByTagName("adview")[0];
+
+  adview.addEventListener("loadcommit", function(event) {
+    onLoadCommit(adview, guestURL);
+  });
+  adview.setAttribute("src", guestURL);
+});