[Android] Add --gtest-filter-file option to the test runner.

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 178 matching lines @@
 
   gtest_suites = list(gtest_config.STABLE_TEST_SUITES
                       + gtest_config.EXPERIMENTAL_TEST_SUITES)
 
   group = parser.add_argument_group('GTest Options')
   group.add_argument('-s', '--suite', dest='suite_name',
                      nargs='+', metavar='SUITE_NAME', required=True,
                      help=('Executable name of the test suite to run. '
                            'Available suites include (but are not limited to): '
                             '%s' % ', '.join('"%s"' % s for s in gtest_suites)))
-  group.add_argument('-f', '--gtest_filter', '--gtest-filter',
-                     dest='test_filter',
-                     help='googletest-style filter string.')
   group.add_argument('--gtest_also_run_disabled_tests',
                      '--gtest-also-run-disabled-tests',
                      dest='run_disabled', action='store_true',
                      help='Also run disabled tests if applicable.')
   group.add_argument('-a', '--test-arguments', dest='test_arguments',
                      default='',
                      help='Additional arguments to pass to the test.')
   group.add_argument('-t', dest='timeout', type=int, default=60,
                      help='Timeout to wait for each test '
                           '(default: %(default)s).')
   group.add_argument('--isolate_file_path',
                      '--isolate-file-path',
                      dest='isolate_file_path',
                      help='.isolate file path to override the default '
                           'path')
+
+  filter_group = group.add_mutually_exclusive_group()
+  filter_group.add_argument('-f', '--gtest_filter', '--gtest-filter',
+                            dest='test_filter',
+                            help='googletest-style filter string.')
+  filter_group.add_argument('--gtest-filter-file', dest='test_filter_file',
+                            help='Path to file that contains gtest-style '

[klundberg, 2015/02/02 20:05:55]

nit: above the help text use "googletest-style", here you use "gtest-style".
Consistency would be nice :-)

[jbudorick, 2015/02/02 21:36:23]

switched this one to "googletest-style"

+                                  'filter strings. (Lines will be joined with '
+                                  '":" to create a single filter string.)')
+
   AddDeviceOptions(parser)
   AddCommonOptions(parser)
   AddRemoteDeviceOptions(parser)
 
 
 def AddLinkerTestOptions(parser):
   group = parser.add_argument_group('Linker Test Options')
   group.add_argument('-f', '--gtest-filter', dest='test_filter',
                      help='googletest-style filter string.')
   AddCommonOptions(parser)
@@ skipping 774 matching lines @@
     subparser = command_parsers.add_parser(
         test_type, usage='%(prog)s [options]', help=config.help_txt)
     config.add_options_func(subparser)
 
   args = parser.parse_args()
   return RunTestsCommand(args, parser)
 
 
 if __name__ == '__main__':
   sys.exit(main())