Add -j option to gclient to run parallel updates

tests/gclient_utils_test.py

Index: tests/gclient_utils_test.py
diff --git a/tests/gclient_utils_test.py b/tests/gclient_utils_test.py
index 7d993fa6f30b153d9bf81255433f7882c17f97b9..dba63cc3fe9a0b3f9d7f7f0e377631793c3b6912 100755
--- a/tests/gclient_utils_test.py
+++ b/tests/gclient_utils_test.py
@@ -18,11 +18,11 @@ class GclientUtilsUnittest(SuperMoxTestBase):
         'CheckCall', 'CheckCallError', 'Error', 'FileRead', 'FileWrite',
         'FindFileUpwards', 'FindGclientRoot', 'GetGClientRootAndEntries',
         'GetNamedNodeText', 'GetNodeNamedAttributeText', 'IsUsingGit',
-        'PathDifference', 'ParseXML', 'PrintableObject', 'RemoveDirectory',
-        'SplitUrlRevision', 'SubprocessCall', 'SubprocessCallAndFilter',
-        'SyntaxErrorToError',
-        'errno', 'logging', 'os', 're', 'stat', 'subprocess', 'sys', 'time',
-        'xml',
+        'PathDifference', 'ParseXML', 'PrintableObject', 'Progress', 'Queue',
+        'RemoveDirectory', 'SplitUrlRevision', 'SubprocessCall',
+        'SubprocessCallAndFilter', 'SyntaxErrorToError', 'ThreadPool',
+        'ThreadSafeProgress', 'errno', 'logging', 'os', 're', 'stat',
+        'subprocess', 'sys', 'threading', 'time', 'traceback', 'xml',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(gclient_utils, members)