Use a python script to configure unit tests and app tests to run.

mojo/tools/apptest_runner.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """A test runner for gtest application tests."""
 
 import argparse
 import ast
 import logging
@@ skipping 16 matching lines @@
 
   parser = argparse.ArgumentParser(description='A test runner for gtest '
                                    'application tests.')
 
   parser.add_argument('apptest_list_file', type=file,
                       help='A file listing apptests to run.')
   parser.add_argument('build_dir', type=str,
                       help='The build output directory.')
   args = parser.parse_args()
 
-  apptest_list = ast.literal_eval(args.apptest_list_file.read())
+  config = ConfigForGNArgs(ParseGNConfig(args.build_dir))
+
+  execution_globals = {
+      "config": config,
+  }
+  exec args.apptest_list_file in execution_globals
+  apptest_list = execution_globals["tests"]
   _logging.debug("Test list: %s" % apptest_list)
 
-  config = ConfigForGNArgs(ParseGNConfig(args.build_dir))
   is_android = (config.target_os == Config.OS_ANDROID)
   android_context = android.PrepareShellRun(config) if is_android else None
 
   gtest.set_color()
   mojo_paths = Paths(config)
 
   exit_code = 0
   for apptest_dict in apptest_list:
-    if apptest_dict.get("disabled"):
-      continue
-    if not config.match_target_os(apptest_dict.get("target_os", [])):
-      continue
-
     apptest = apptest_dict["test"]
     apptest_args = apptest_dict.get("test-args", [])
     shell_args = apptest_dict.get("shell-args", [])
     launched_services = apptest_dict.get("launched-services", [])
 
     print "Running " + apptest + "...",
     sys.stdout.flush()
 
     # List the apptest fixtures so they can be run independently for isolation.
     # TODO(msw): Run some apptests without fixture isolation?
@@ skipping 43 matching lines @@
     launcher_args = [
         '--shell-path=' + apps.socket_path,
         '--app-url=' + application,
         '--app-path=' + mojo_paths.FileFromUrl(application),
         '--app-args=' + " ".join(application_args)]
     return gtest.run_test(config, launcher_args, run_launcher=True)
 
 
 if __name__ == '__main__':
   sys.exit(main())