Fix imports in test runner.

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/532693002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23609 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/testrunner/local/testsuite.py

@@ -32,6 +32,7 @@ import os
 from . import commands
 from . import statusfile
 from . import utils
+from ..objects import testcase
 
 class TestSuite(object):