Mark json results failures as unexpected in python tests.

chrome/test/mini_installer/test_installer.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.
 
 """This script tests the installer with test cases specified in the config file.
 
 For each test case, it checks that the machine states after the execution of
 each command match the expected machine states. For more details, take a look at
 the design documentation at http://goo.gl/Q0rGM6
 """
@@ skipping 324 matching lines @@
   failed_test_names = _FailedTestNames(result)
 
   full_results['num_failures_by_type'] = {
       'FAIL': len(failed_test_names),
       'PASS': len(all_test_names) - len(failed_test_names),
   }
 
   full_results['tests'] = {}
 
   for test_name in all_test_names:
-    value = {
-        'expected': 'PASS',
-        'actual': 'FAIL' if (test_name in failed_test_names) else 'PASS',
-    }
+    value = {}
+    value['expected'] = 'PASS'
+    if test_name in failed_test_names:
+      value['actual'] = 'FAIL'
+      value['is_unexpected'] = True
+    else:
+      value['actual'] = 'PASS'
     _AddPathToTrie(full_results['tests'], test_name, value)
 
   return full_results
 
 
 def _AllTestNames(suite):
   test_names = []
   # _tests is protected  pylint: disable=W0212
   for test in suite._tests:
     if isinstance(test, unittest.suite.TestSuite):
@@ skipping 12 matching lines @@
     trie[path] = value
     return
   directory, rest = path.split(TEST_SEPARATOR, 1)
   if directory not in trie:
     trie[directory] = {}
   _AddPathToTrie(trie[directory], rest, value)
 
 
 if __name__ == '__main__':
   sys.exit(main())