[chromedriver] Fix python tests.

BUG=
NOTRY=True

Review URL: https://codereview.chromium.org/131563004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245584 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/chromedriver/test/run_py_tests.py

@@ -638,7 +638,7 @@ class ChromeDriverTest(ChromeDriverBaseTest):
     self.assertTrue(self._driver.IsAutoReporting())
     url = self.GetHttpUrlForFile('/chromedriver/console_log.html')
     self.assertRaisesRegexp(chromedriver.UnknownError,
-                            '.*404.*',
+                            '.*(404|Failed to load resource).*',
                             self._driver.Load,
                             url)