[Chromedriver] Allow access to chrome extension within iframe.

chrome/test/chromedriver/test/run_py_tests.py

 #!/usr/bin/env python
 # Copyright 2013 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.
 
 """End to end tests for ChromeDriver."""
 
 import base64
 import json
 import math
@@ skipping 1820 matching lines @@
         driver, old_handles, check_closed_windows=False)
     handles = driver.GetWindowHandles()
     for handle in handles:
       driver.SwitchToWindow(handle)
       if driver.GetCurrentUrl() == 'chrome-extension://' \
           'gegjcdcfeiojglhifpmibkadodekakpc/_generated_background_page.html':
         self.assertEqual(42, driver.ExecuteScript('return magic;'))
         return
     self.fail("couldn't find generated background page for test app")
 
+  def testIFrameWithExtensionsSource(self):
+    crx_path = os.path.join(_TEST_DATA_DIR, 'frames_extension.crx')
+    driver = self.CreateDriver(
+        chrome_extensions=[self._PackExtension(crx_path)])
+    driver.Load(
+        ChromeDriverTest._http_server.GetUrl() +
+          '/chromedriver/iframe_extension.html')
+    driver.SwitchToFrame('testframe')
+    element = driver.FindElement('id', 'p1')
+    self.assertEqual('Its a frame with extension source', element.GetText())
+
   def testDontExecuteScriptsInContentScriptContext(self):
     # This test extension has a content script which runs in all frames (see
     # https://developer.chrome.com/extensions/content_scripts) which causes each
     # frame on the page to be associated with multiple JS execution contexts.
     # Make sure that ExecuteScript operates on the page's context, rather than
     # the extension's content script's one.
     extension_path = os.path.join(_TEST_DATA_DIR, 'all_frames')
     driver = self.CreateDriver(
         chrome_switches=['load-extension=%s' % extension_path])
     driver.Load(
@@ skipping 623 matching lines @@
 
   all_tests_suite = unittest.defaultTestLoader.loadTestsFromModule(
       sys.modules[__name__])
   tests = unittest_util.FilterTestSuite(all_tests_suite, options.filter)
   ChromeDriverTest.GlobalSetUp()
   MobileEmulationCapabilityTest.GlobalSetUp()
   result = unittest.TextTestRunner(stream=sys.stdout, verbosity=2).run(tests)
   ChromeDriverTest.GlobalTearDown()
   MobileEmulationCapabilityTest.GlobalTearDown()
   sys.exit(len(result.failures) + len(result.errors))