Handle tries of results data in upload (fix _is_directory).

Tools/TestResultServer/handlers/buildershandler_unittest.py

Index: Tools/TestResultServer/handlers/buildershandler_unittest.py
diff --git a/Tools/TestResultServer/handlers/buildershandler_unittest.py b/Tools/TestResultServer/handlers/buildershandler_unittest.py
index d4d50f758db7bba95d6bfd9d37520772e519893e..94820168637885eff52d7eeb49fcffa1194d1e00 100644
--- a/Tools/TestResultServer/handlers/buildershandler_unittest.py
+++ b/Tools/TestResultServer/handlers/buildershandler_unittest.py
@@ -99,7 +99,7 @@ class BuildersHandlerTest(unittest.TestCase):
                         'layout-tests': {'builders': ['WebKit Linux', 'WebKit Win']}},
                     'name': 'ChromiumWebkit',
                     'url_name': 'chromium.webkit',
-                    'groups': ['@ToT Chromium'],
+                    'groups': ['@ToT Chromium', '@ToT Blink'],

[ojan, 2014/08/15 00:26:19]

Whoops. This was my fault. Thx for fixing. I really need to add a script to run
all the TestResultServer python tests.

                 }],
                 "no_upload_test_types": buildershandler.TEST_STEPS_THAT_DO_NOT_UPLOAD_YET,
             }