Add infra_libs as a bootstrap dependency.

infra_libs/time_functions/test/timestamp_test.py

Index: infra_libs/time_functions/test/timestamp_test.py
diff --git a/infra_libs/time_functions/test/timestamp_test.py b/infra_libs/time_functions/test/timestamp_test.py
deleted file mode 100644
index fa771e95f7ed525fcc4cbde53e596ed87a8f34be..0000000000000000000000000000000000000000
--- a/infra_libs/time_functions/test/timestamp_test.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import datetime
-from pytz import timezone
-import unittest
-
-from infra_libs.time_functions import timestamp
-
-
-class TestTimestamps(unittest.TestCase):
-  def testTimestamp(self):
-    sec_diff = 1000
-    my_date = datetime.datetime.utcfromtimestamp(sec_diff)
-    self.assertEqual(timestamp.utctimestamp(my_date), float(sec_diff))
-
-  def testTimeZoneTimestamp(self):
-    sec_diff = 1000
-    my_date = datetime.datetime.utcfromtimestamp(sec_diff)
-    my_date = my_date.replace(tzinfo=timezone('Etc/GMT-8'))
-
-    pst_diff = sec_diff - (8 * 3600.0)
-    self.assertEqual(timestamp.utctimestamp(my_date), float(pst_diff))