Enable <webview>.executeScript outside of Apps and Extensions [2]

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 onGetBackgroundExecuted(results) {
+  chrome.send('testResult', [results.length == 1 && results[0] == 'red']);
+};
+
 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;'
+    }, onGetBackgroundExecuted);
   };
 
+  var onLoadStop = function() {
+    webview.executeScript({
+      code: 'document.body.style.backgroundColor = \'red\';'
+    }, onSetBackgroundExecuted);
+  };
+
+  webview.addEventListener('loadstop', onLoadStop);
+  webview.src = url;
+}
+
+function testExecuteScriptCodeFromFile(url) {
+  var webview = createWebview();
+
   var onSetBackgroundExecuted = function() {
     webview.executeScript({
       code: 'document.body.style.backgroundColor;'
     }, onGetBackgroundExecuted);
   };
 
   var onLoadStop = function() {
     webview.executeScript({
-      code: 'document.body.style.backgroundColor = \'red\';'
+      file: 'test/webview_execute_script.js'
     }, onSetBackgroundExecuted);
   };
 
   webview.addEventListener('loadstop', onLoadStop);
   webview.src = url;
 }