Enable <webview>.executeScript outside of Apps and Extensions [1]

chrome/test/data/webui/webview_execute_script_test.js

+// Copyright 2015 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 createWebview() {
+  var webview = document.createElement('webview');
+  document.body.appendChild(webview);
+  return webview;
+}
+
+function testExecuteScriptCode(url) {
+  var webview = createWebview();
+
+  var onGetBackgroundExecuted = function(results) {
+    chrome.send('testResult', [results.length == 1 && results[0] == 'red']);
+  };
+
+  var onSetBackgroundExecuted = function() {
+    webview.executeScript({
+      code: 'document.body.style.backgroundColor'

[Devlin, 2015/03/09 16:04:42]

nit: add a semicolon.

[Xi Han, 2015/03/09 17:59:56]

Tried to add a semicolon, but the semicolon caused the tests failed. Check the
format again, and it doesn't have the semicolon in the example.

[Devlin, 2015/03/09 18:07:59]

I find that very surprising.  To be clear, I'm suggesting this become:
code: 'document.body.style.backgroundColor;'
and below:
code: 'document.body.style.backgroundColor = \'red\';'

[Xi Han, 2015/03/09 18:28:33]

You are right. I put the semicolon after the "'", which caused the failures.

+    }, onGetBackgroundExecuted);
+  };
+
+  var onLoadStop = function() {
+    webview.executeScript({
+      code: 'document.body.style.backgroundColor = \'red\''

[Devlin, 2015/03/09 16:04:42]

nit: add a semicolon.

[Xi Han, 2015/03/09 17:59:56]

Same above.

+    }, onSetBackgroundExecuted);
+  };
+
+  webview.addEventListener('loadstop', onLoadStop);
+  webview.src = url;
+}