Revert of Disable all GPU tests on N5X bot temporarily.

content/test/gpu/generate_buildbot_json.py

 #!/usr/bin/env python
 # Copyright 2016 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.
 
 """Script to generate chromium.gpu.json and chromium.gpu.fyi.json in
 the src/testing/buildbot directory. Maintaining these files by hand is
 too unwieldy.
 """
 
@@ skipping 1414 matching lines @@
   if 'swarming_dimension_sets' in tc:
     if not matches_swarming_dimensions(tester_config,
                                        tc['swarming_dimension_sets']):
       return False
   if is_android(tester_config):
     if not tc.get('allow_on_android', False):
       return False
   return True
 
 def should_run_on_tester(tester_name, tester_config, test_config, is_fyi):
-  # TODO(jmadill): Re-enable when n5x fixed. See http://crbug.com/672502.
-  if 'Nexus 5X' in tester_name:
-    return False
   # Check if this config is disabled on this tester
   if 'disabled_tester_configs' in test_config:
     for dtc in test_config['disabled_tester_configs']:
       if tester_config_matches_tester(tester_name, tester_config, dtc, is_fyi,
                                       False):
         return False
   if 'tester_configs' in test_config:
     for tc in test_config['tester_configs']:
       if tester_config_matches_tester(tester_name, tester_config, tc, is_fyi,
                                       True):
@@ skipping 197 matching lines @@
     json.dump(tests, fp, indent=2, separators=(',', ': '), sort_keys=True)
     fp.write('\n')
 
 def main():
   generate_all_tests(FYI_WATERFALL, True)
   generate_all_tests(WATERFALL, False)
   return 0
 
 if __name__ == "__main__":
   sys.exit(main())