Allow content script insertion on about:-URLs.

chrome/test/data/extensions/api_test/content_scripts/about_blank_iframes/test.js

 // Copyright (c) 2011 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.
 
 chrome.test.getConfig(function(config) {
+  chrome.extension.onRequest.addListener(
+    function(request, sender, sendResponse) {
+      if (request == 'parent')
+        chrome.test.succeed();
+      else
+        chrome.test.fail('Unexpected request: ' + JSON.stringify(request));
+    }
+  );
   chrome.test.runTests([
-    function onRequest() {
-      chrome.extension.onRequest.addListener(
-        function(request, sender, sendResponse) {
-          if (request == "parent")
-            chrome.test.succeed();
-          else
-            chrome.test.fail("Unexpected request: " + JSON.stringify(request));
-        }
-      );
+    function testDontInjectInAboutBlankFrame() {
       chrome.test.log("Creating tab...");
       var test_url =
           ("http://localhost:PORT/extensions/" +
            "test_file_with_about_blank_iframe.html")
               .replace(/PORT/, config.testServer.port);
       chrome.tabs.create({ url: test_url });
+    },
+    function testDontInjectInAboutSrcdocFrame() {
+      chrome.test.log('Creating tab...');
+      var test_url =
+          ('http://localhost:PORT/extensions/' +
+           'api_test/webnavigation/srcdoc/a.html')
+              .replace(/PORT/, config.testServer.port);
+      chrome.tabs.create({ url: test_url });
+    },
+    function testDontInjectInNestedAboutFrames() {
+      chrome.test.log('Creating tab...');
+      var test_url =
+          ('http://localhost:PORT/extensions/' +
+           'test_file_with_about_blank_in_srcdoc.html')
+              .replace(/PORT/, config.testServer.port);
+      chrome.tabs.create({ url: test_url });
     }
   ]);
 });