Update expectations.

tools/perf_expectations/tests/perf_expectations_unittest.py

Index: tools/perf_expectations/tests/perf_expectations_unittest.py
diff --git a/tools/perf_expectations/tests/perf_expectations_unittest.py b/tools/perf_expectations/tests/perf_expectations_unittest.py
index 92d4308ea794abc4f1a4625c6a5941ba46618ec6..9b9b1268db9570bc1861ae9e89b4f92871aa9382 100755
--- a/tools/perf_expectations/tests/perf_expectations_unittest.py
+++ b/tools/perf_expectations/tests/perf_expectations_unittest.py
@@ -1,6 +1,5 @@
 #!/usr/bin/env python
-#
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Copyright (c) 2012 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.
 
@@ -151,7 +150,8 @@ class PerfExpectationsUnittest(unittest.TestCase):
   def testNoUpdatesNeeded(self):
     p = subprocess.Popen([MAKE_EXPECTATIONS, '-s'], stdout=subprocess.PIPE)
     p.wait();
-    self.assertEqual(p.returncode, 0, msg='Expectations has pending updates!')
+    self.assertEqual(p.returncode, 0,
+        msg='Update expectations first by running ./make_expectations.py')
 
   def testConfigFile(self):
     # Test that the config file can be parsed as JSON.