Implement <webview>.addContentScript/removeContentScript API [3]

chrome/test/data/webui/webview_content_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;
 }
 
@@ skipping 361 matching lines @@
       chrome.send('testResult', [true]);
       return;
     }
     console.log('Unexpected message: \'' + data[0]  + '\'');
     chrome.send('testResult', [false]);
   });
 
   webview.src = url;
   document.body.appendChild(webview);
 }
+
+function testAddContentScriptWithCode(url) {
+  var webview = document.createElement('webview');
+
+  console.log("Step 1: call <webview>.addContentScripts.");
+  webview.addContentScripts(
+      [{"name": 'myrule',
+        "matches": ["http://*/empty*"],

[xiyuan, 2015/04/08 15:54:02]

nit: double quote -> single quote in all places.

+        "code": 'document.body.style.backgroundColor = \"red\";',
+        "run_at": 'document_end'}]);
+
+  webview.addEventListener('loadstop', function() {
+    console.log('Step 2: call webview.executeScript() to check result.')
+    webview.executeScript({
+      code: "document.body.style.backgroundColor;"
+    }, onGetBackgroundExecuted);
+  });
+
+  webview.src = url;
+  document.body.appendChild(webview);
+}