Add --test-jar arg to test_runner to explicitly specify its path.

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 328 matching lines @@
   # TODO(jbudorick): Remove support for name-style APK specification once
   # bots are no longer doing it.
   group.add_argument('--apk-under-test',
                      help='Path or name of the apk under test.')
   group.add_argument('--apk-under-test-incremental-install-script',
                      help='Path to install script for the --apk-under-test.')
   group.add_argument('--test-apk', required=True,
                      help='Path or name of the apk containing the tests '
                           '(name is without the .apk extension; '
                           'e.g. "ContentShellTest").')
+  group.add_argument('--test-jar', required=True,
+                     help='Path of jar containing test java files.')
   group.add_argument('--test-apk-incremental-install-script',
                      type=os.path.realpath,
                      help='Path to install script for the --test-apk.')
   group.add_argument('--additional-apk', action='append',
                      dest='additional_apks', default=[],
                      type=os.path.realpath,
                      help='Additional apk that must be installed on '
                           'the device when the tests are run')
   group.add_argument('--coverage-dir', type=os.path.realpath,
                      help=('Directory in which to place all generated '
@@ skipping 498 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())