Fix to enable the cached credentials login test

chrome/test/functional/chromeos_login.py

Index: chrome/test/functional/chromeos_login.py
diff --git a/chrome/test/functional/chromeos_login.py b/chrome/test/functional/chromeos_login.py
index 7b4a56bcb658b4504f30fc316c53008aa32aa3cf..09a7a0ea85f02ddfef9274e866c06d19610f6233 100755
--- a/chrome/test/functional/chromeos_login.py
+++ b/chrome/test/functional/chromeos_login.py
@@ -317,7 +317,7 @@ class ChromeosLoginCachedCredentialsAddUser(pyauto.PyUITest):
                            credentials['password'])
     )
 
-class ChromeosLoginCachedCredentialsUserPod(pyauto.PyUITest):
+class ChromeosLoginCachedCredentialsUserPod(ChromeosLogin):
   """TestCase for Logging into ChromeOS with cached credentials and
   invalid proxy settings.
   """
@@ -331,7 +331,7 @@ class ChromeosLoginCachedCredentialsUserPod(pyauto.PyUITest):
     # so restart ui now.
     cros_ui.stop(allow_fail=True)
     cryptohome.remove_all_vaults()
-    cros_ui.start(wait_for_login_prompt=False)
+    cros_ui.start(wait_for_login_prompt=True)
     pyauto.PyUITest.setUp(self)
 
   def tearDown(self):
@@ -354,12 +354,18 @@ class ChromeosLoginCachedCredentialsUserPod(pyauto.PyUITest):
     make it pass we need a hook that simply calls Login on the delegate
     in webui_login_display.cc ::ShowSigninScreenForCreds.
     """
+    credentials = self._ValidCredentials()
     self.testGoodLogin()
     self.Logout()
-    self.SetProxySettingOnChromeOS('singlehttp', '127.0.0.1')
-    self.testGoodLogin()
-    self.ResetProxySettingsOnChromeOS()
-
+    proxy_dict = {
+      'url_path': 'singlehttp',
+      'proxy_url': '127.0.0.1',
+    }
+    self.SetProxySettingOnChromeOS(proxy_dict)
+    self.LoginWithCachedCredentials(credentials['username'],
+                                    credentials['password'])
+    login_info = self.GetLoginInfo()
+    self.assertTrue(login_info['is_logged_in'], msg='Login failed.')
 
 if __name__ == '__main__':
   pyauto_functional.Main()