Add directory option for JUnit coverage files.

build/android/test_runner.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Runs all types of tests from one unified interface."""
 
 import argparse
 import collections
@@ skipping 441 matching lines @@
       help='Filters tests googletest-style.')
   group.add_argument(
       '--package-filter', dest='package_filter',
       help='Filters tests by package.')
   group.add_argument(
       '--runner-filter', dest='runner_filter',
       help='Filters tests by runner class. Must be fully qualified.')
   group.add_argument(
       '--sdk-version', dest='sdk_version', type=int,
       help='The Android SDK version.')
+  group.add_argument(
+      '--coverage-dir', dest='coverage_dir',
+      help='Directory to store coverage info.')
   AddCommonOptions(parser)
 
 
 def AddMonkeyTestOptions(parser):
   """Adds monkey test options to |parser|."""
 
   group = parser.add_argument_group('Monkey Test Options')
   group.add_argument(
       '--package', required=True, choices=constants.PACKAGE_INFO.keys(),
       metavar='PACKAGE', help='Package under test.')
@@ skipping 491 matching lines @@
     if e.is_infra_error:
       return constants.INFRA_EXIT_CODE
     return constants.ERROR_EXIT_CODE
   except: # pylint: disable=W0702
     logging.exception('Unrecognized error occurred.')
     return constants.ERROR_EXIT_CODE
 
 
 if __name__ == '__main__':
   sys.exit(main())