Remove the concept of 'integration tests' from test-webkitpy.

Tools/Scripts/webkitpy/layout_tests/run_webkit_tests_unittest.py

 # Copyright (C) 2010 Google Inc. All rights reserved.
 # Copyright (C) 2010 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
 # Copyright (C) 2011 Apple 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.
@@ skipping 207 matching lines @@
         # Ensure the results were written out and displayed.
         failing_results_text = host.filesystem.read_text_file('/tmp/layout-test-results/failing_results.json')
         json_to_eval = failing_results_text.replace("ADD_RESULTS(", "").replace(");", "")
         self.assertEqual(json.loads(json_to_eval), details.summarized_failing_results)
 
         full_results_text = host.filesystem.read_text_file('/tmp/layout-test-results/full_results.json')
         self.assertEqual(json.loads(full_results_text), details.summarized_full_results)
 
         self.assertEqual(host.user.opened_urls, [path.abspath_to_uri(MockHost().platform, '/tmp/layout-test-results/results.html')])
 
-
     def test_batch_size(self):
         batch_tests_run = get_test_batches(['--batch-size', '2'])
         for batch in batch_tests_run:
             self.assertTrue(len(batch) <= 2, '%s had too many tests' % ', '.join(batch))
 
     def test_max_locked_shards(self):
         # Tests for the default of using one locked shard even in the case of more than one child process.
         if not self.should_test_processes:
             return
         save_env_webkit_test_max_locked_shards = None
@@ skipping 814 matching lines @@
         stderr = StringIO.StringIO()
         res = run_webkit_tests.main(['--platform', 'test', '--exit-after-n-failures', '1',
                                      'failures/unexpected/missing_text.html',
                                      'failures/unexpected/missing_image.html'],
                                     stdout, stderr)
         self.assertEqual(res, test_run_results.EARLY_EXIT_STATUS)
         self.assertEqual(stdout.getvalue(),
                 ('\n'
                  'Regressions: Unexpected missing results (1)\n'
                  '  failures/unexpected/missing_image.html [ Missing ]\n\n'))