Disable unit tests that fail on cros.

tools/perf/page_sets/presubmit_unittest.py

Index: tools/perf/page_sets/presubmit_unittest.py
diff --git a/tools/perf/page_sets/presubmit_unittest.py b/tools/perf/page_sets/presubmit_unittest.py
index b3d05691839417244f3b999af742c9cce8030148..a639ea4c57bd9236679a79239aaf322dbc05974c 100644
--- a/tools/perf/page_sets/presubmit_unittest.py
+++ b/tools/perf/page_sets/presubmit_unittest.py
@@ -9,6 +9,7 @@ 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)
@@ -121,10 +122,12 @@ class PresubmitTest(unittest.TestCase):
     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)