Enable Chrome Sandbox with run_test_cases.py

tools/isolate/run_test_cases_smoke_test.py

 #!/usr/bin/env python
 # 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.
 
 import json
 import logging
 import os
 import re
 import subprocess
@@ skipping 21 matching lines @@
   out, err = proc.communicate() or ('', '')
 
   return (out, err, proc.returncode)
 
 
 class TraceTestCases(unittest.TestCase):
   def setUp(self):
     # Make sure there's no environment variable that could do side effects.
     os.environ.pop('GTEST_SHARD_INDEX', '')
     os.environ.pop('GTEST_TOTAL_SHARDS', '')
+    os.environ.pop('CHROME_DEVEL_SANDBOX','')
 
     self.filename = 'test.results'
 
   def tearDown(self):
     if os.path.exists(self.filename):
       os.remove(self.filename)
 
   def _check_results(self, expected_out_re, out, err):
     if sys.platform == 'win32':
       out = out.replace('\r\n', '\n')
@@ skipping 18 matching lines @@
       self.assertTrue(entry_name in file_contents)
       self.assertEqual(entry_count, len(file_contents[entry_name]))
 
   def test_simple_pass(self):
     out, err, return_code = RunTest(
         'gtest_fake_pass.py', ['--result', self.filename])
 
     self.assertEquals(0, return_code)
 
     expected_out_re = [
+      r'Disabling sandbox. Setting environment variable:',
+      r'  CHROME_DEVEL_SANDBOX=""',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       re.escape('Summary:'),
       re.escape('Success:    3 100.00%'),
       re.escape('Flaky:      0  0.00%'),
       re.escape('Fail:       0  0.00%'),
       r'\d+\.\ds Done running 3 tests with 3 executions. \d+\.\d test/s',
     ]
     self._check_results(expected_out_re, out, err)
 
     expected_result_file_entries = [
         ('Foo.Bar1', 1),
         ('Foo.Bar2', 1),
         ('Foo.Bar3', 1)
     ]
     self._check_results_file(expected_result_file_entries)
 
   def test_simple_fail(self):
     out, err, return_code = RunTest(
         'gtest_fake_fail.py', ['--result', self.filename])
 
     self.assertEquals(1, return_code)
 
     expected_out_re = [
+      r'Disabling sandbox. Setting environment variable:',
+      r'  CHROME_DEVEL_SANDBOX=""',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       r'\[\d/\d\]   \d\.\d\ds .+',
       re.escape('Note: Google Test filter = Baz.Fail'),
       r'',
     ] + [
       re.escape(l) for l in
@@ skipping 34 matching lines @@
     ]
 
     self.assertEqual(1, return_code)
     self._check_results(expected_out_re, out, err)
 
 
 if __name__ == '__main__':
   VERBOSE = '-v' in sys.argv
   logging.basicConfig(level=logging.DEBUG if VERBOSE else logging.ERROR)
   unittest.main()