Use sky_shell instead of mojo_shell for testing.

sky/tools/webkitpy/performance_tests/perftestsrunner_unittest.py

 # Copyright (C) 2012 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 121 matching lines @@
                 '--build-directory=folder42',
                 '--platform=platform42',
                 '--builder-name', 'webkit-mac-1',
                 '--build-number=56',
                 '--time-out-ms=42',
                 '--no-show-results',
                 '--reset-results',
                 '--output-json-path=a/output.json',
                 '--slave-config-json-path=a/source.json',
                 '--test-results-server=somehost',
-                '--additional-drt-flag=--enable-threaded-parser',
-                '--additional-drt-flag=--awesomesauce',
                 '--repeat=5',
                 '--test-runner-count=5',
                 '--debug'])
         self.assertTrue(options.build)
         self.assertEqual(options.build_directory, 'folder42')
         self.assertEqual(options.platform, 'platform42')
         self.assertEqual(options.builder_name, 'webkit-mac-1')
         self.assertEqual(options.build_number, '56')
         self.assertEqual(options.time_out_ms, '42')
         self.assertEqual(options.configuration, 'Debug')
         self.assertFalse(options.show_results)
         self.assertTrue(options.reset_results)
         self.assertEqual(options.output_json_path, 'a/output.json')
         self.assertEqual(options.slave_config_json_path, 'a/source.json')
         self.assertEqual(options.test_results_server, 'somehost')
-        self.assertEqual(options.additional_drt_flag, ['--enable-threaded-parser', '--awesomesauce'])
         self.assertEqual(options.repeat, 5)
         self.assertEqual(options.test_runner_count, 5)
 
     def test_upload_json(self):
         runner, port = self.create_runner()
         port.host.filesystem.files['/mock-checkout/some.json'] = 'some content'
 
         class MockFileUploader:
             called = []
             upload_single_text_file_throws = False
@@ skipping 584 matching lines @@
         self._test_run_with_json_output(runner, port.host.filesystem, compare_logs=False)
         generated_json = json.loads(port.host.filesystem.files['/mock-checkout/output.json'])
         self.assertTrue(isinstance(generated_json, list))
         self.assertEqual(len(generated_json), 1)
 
         output = generated_json[0]['tests']['Bindings']['tests']['event-target-wrapper']['metrics']['Time']['current']
         self.assertEqual(len(output), 3)
         expectedMetrics = EventTargetWrapperTestData.results['metrics']['Time']['current'][0]
         for metrics in output:
             self.assertEqual(metrics, expectedMetrics)