Disable unit tests that fail on cros.

tools/perf/page_sets/presubmit_unittest.py

 # Copyright 2013 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 collections
 import os
 import sys
 import unittest
 
 PERF_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, os.path.join(os.path.dirname(PERF_ROOT), 'telemetry'))
+from telemetry.unittest import DisabledTestOnCrOS
 from telemetry.unittest import system_stub
 
 sys.path.insert(0, PERF_ROOT)
 from page_sets import PRESUBMIT
 
 
 class AffectedFileStub(object):
   def __init__(self, absolute_local_path):
     self._absolute_local_path = absolute_local_path
 
@@ skipping 92 matching lines @@
   def testInvalidHash(self):
     results = self._CheckUpload(['/path/to/invalid_hash.wpr.sha1'])
     self.assertResultCount(results, 1, 0)
     self.assertTrue('valid SHA-1 hash' in str(results[0]), msg=results[0])
 
   def testMissingFile(self):
     results = self._CheckUpload(['/path/to/missing.wpr.sha1'])
     self.assertResultCount(results, 1, 0)
     self.assertTrue('not found' in str(results[0]), msg=results[0])
 
+  @DisabledTestOnCrOS
   def testSkip(self):
     results = self._CheckUpload(['/path/to/skip.wpr.sha1'])
     self.assertResultCount(results, 0, 0)
 
+  @DisabledTestOnCrOS
   def testSuccess(self):
     results = self._CheckUpload(['/path/to/success.wpr.sha1'])
     self.assertResultCount(results, 0, 1)
     self.assertTrue('Uploaded' in str(results[0]), msg=results[0])
 
   def testWrongHash(self):
     results = self._CheckUpload(['/path/to/wrong_hash.wpr.sha1'])
     self.assertTrue('does not match' in str(results[0]), msg=results[0])
 
 
 if __name__ == '__main__':
   unittest.main()