Calling webview.focus() now works correctly

chrome/test/data/extensions/platform_apps/web_view/shim/main.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.
 
 var util = {};
 var embedder = {};
 embedder.baseGuestURL = '';
 embedder.emptyGuestURL = '';
 embedder.windowOpenGuestURL = '';
 embedder.noReferrerGuestURL = '';
@@ skipping 2688 matching lines @@
         // Close the second app window, which should not trigger the whole
         // embedder process to be cleaned up.
         appWindow.contentWindow.close();
         embedder.test.succeed();
       });
       webview.src = 'about:blank';
     };
   });
 }
 
+function testFocusWhileFocused() {
+  var webview = new WebView();
+  webview.src = 'about:blank';
+
+  webview.addEventListener('loadstop', function(e) {
+    // Focus twice, then make sure that the internal element is still focused.
+    webview.focus();
+    webview.focus();
+    embedder.test.assertTrue(document.activeElement = webview);
+    embedder.test.assertTrue(webview.shadowRoot.activeElement);
+    embedder.test.succeed();
+  });
+
+  document.body.appendChild(webview);
+}
+
 embedder.test.testList = {
   'testAllowTransparencyAttribute': testAllowTransparencyAttribute,
   'testAutosizeHeight': testAutosizeHeight,
   'testAutosizeAfterNavigation': testAutosizeAfterNavigation,
   'testAutosizeBeforeNavigation': testAutosizeBeforeNavigation,
   'testAutosizeRemoveAttributes': testAutosizeRemoveAttributes,
   'testAutosizeWithPartialAttributes': testAutosizeWithPartialAttributes,
   'testAPIMethodExistence': testAPIMethodExistence,
   'testChromeExtensionURL': testChromeExtensionURL,
   'testChromeExtensionRelativePath': testChromeExtensionRelativePath,
@@ skipping 79 matching lines @@
   'testFindAPI': testFindAPI,
   'testFindAPI_findupdate': testFindAPI,
   'testLoadDataAPI': testLoadDataAPI,
   'testResizeEvents': testResizeEvents,
   'testPerOriginZoomMode': testPerOriginZoomMode,
   'testPerViewZoomMode': testPerViewZoomMode,
   'testDisabledZoomMode': testDisabledZoomMode,
   'testZoomBeforeNavigation': testZoomBeforeNavigation,
   'testPlugin': testPlugin,
   'testGarbageCollect': testGarbageCollect,
-  'testCloseNewWindowCleanup': testCloseNewWindowCleanup
+  'testCloseNewWindowCleanup': testCloseNewWindowCleanup,
+  'testFocusWhileFocused': testFocusWhileFocused
 };
 
 onload = function() {
   chrome.test.getConfig(function(config) {
     embedder.setUp_(config);
     chrome.test.sendMessage("Launched");
   });
 };