clovis: Enable the disable-by-default-blink.debug.layout tracing category.

tools/android/loading/user_satisfied_lens_unittest.py

Index: tools/android/loading/user_satisfied_lens_unittest.py
diff --git a/tools/android/loading/user_satisfied_lens_unittest.py b/tools/android/loading/user_satisfied_lens_unittest.py
index 2e35a50e9762b6a311869f8d40be9f1b6ce5dace..a9318f3c9d62e3123dc7ccea312d135d945ee57f 100644
--- a/tools/android/loading/user_satisfied_lens_unittest.py
+++ b/tools/android/loading/user_satisfied_lens_unittest.py
@@ -114,3 +114,7 @@ class UserSatisfiedLensTestCase(unittest.TestCase):
     lens = user_satisfied_lens.FirstSignificantPaintLens(loading_trace)
     self.assertEqual(set(['0.1', '0.2']), lens.CriticalRequests())
     self.assertEqual(7, lens.PostloadTimeMsec())
+
+
+if __name__ == '__main__':
+  unittest.main()