Allow chromedriver to install an extension and get all installed extension IDs.

chrome/test/functional/omnibox.py

 #!/usr/bin/python
 # 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.
 
 import glob
 import os
 import re
 import shutil
 import tempfile
@@ skipping 343 matching lines @@
     """Installs a sample packaged app and verifies the install is successful.
 
     Args:
       app_name: The name of the app to be installed.
 
     Returns:
       The string ID of the installed app.
     """
     app_crx_file = os.path.abspath(os.path.join(self.DataDir(),
                                    'pyauto_private', 'apps', app_name))
-    installed_app_id = self.InstallApp(app_crx_file)
-    self.assertTrue(installed_app_id, msg='App install failed.')
+    return self.InstallExtension(app_crx_file)
 
   def _VerifyOminiboxMatches(self, search_str, app_url, is_incognito):
     """Verify app matches in omnibox.
 
     Args:
       search_str: Search keyword to find app matches.
       app_url: Chrome app launch URL.
       is_incognito: A boolean indicating if omnibox matches are from an
                     incognito window.
     """
@@ skipping 147 matching lines @@
   def testBeginningPartAppNameSearchInNewTab(self):
     """Verify that we can search app with partial app name (beginning part)."""
     app_name = 'cargo_bridge.crx'
     search_str = 'Car'
     app_url = 'http://webstore.limexgames.com/cargo_bridge'
     self._VerifyAppSearchNewTab(app_name, search_str, app_url)
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()