Docserver: Make the hand-written Cron methods run first rather than last, since

chrome/common/extensions/docs/server2/manifest_data_source_test.py

Index: chrome/common/extensions/docs/server2/manifest_data_source_test.py
diff --git a/chrome/common/extensions/docs/server2/manifest_data_source_test.py b/chrome/common/extensions/docs/server2/manifest_data_source_test.py
index f9c99befc37cc583b48bcc2be9e6c52d169310b8..7742a49dc210c0066d390cc81e8fd6da81db71b7 100755
--- a/chrome/common/extensions/docs/server2/manifest_data_source_test.py
+++ b/chrome/common/extensions/docs/server2/manifest_data_source_test.py
@@ -9,6 +9,7 @@ import unittest
 
 from compiled_file_system import CompiledFileSystem
 from features_bundle import FeaturesBundle
+from future import Future
 import manifest_data_source
 from object_store_creator import ObjectStoreCreator
 
@@ -246,7 +247,7 @@ class ManifestDataSourceTest(unittest.TestCase):
 
     class FakeFeaturesBundle(object):
       def GetManifestFeatures(self):
-        return manifest_features
+        return Future(value=manifest_features)
 
     class FakeServerInstance(object):
       def __init__(self):