[ios] Updates test_runner.py to output a test results json file.

ios/build/bots/scripts/run.py

 #!/usr/bin/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.
 
 """Run a test.
 
 Sample usage:
   ./run.py \
   -a src/xcodebuild/Release-iphoneos/base_unittests.app \
@@ skipping 53 matching lines @@
     # test_runner.Launch returns 0 on success, 1 on failure, so return 2
     # on exception to distinguish between a test failure, and a failure
     # to launch the test at all.
     return 2
   finally:
     if tr:
       summary['logs'] = tr.logs
 
     with open(os.path.join(args.out_dir, 'summary.json'), 'w') as f:
       json.dump(summary, f)
+    if tr:
+      with open(os.path.join(args.out_dir, 'full_results.json'), 'w') as f:
+        json.dump(tr.test_results, f)
+
 
 
 if __name__ == '__main__':
   parser = argparse.ArgumentParser()
 
   parser.add_argument(
     '-a',
     '--app',
     help='Compiled .app to run.',
     metavar='app',
@@ skipping 59 matching lines @@
       parser.error(
         'must specify all or none of -i/--iossim, -p/--platform, -v/--version')
 
   args_json = json.loads(args.args_json)
   args.env_var = args.env_var or []
   args.env_var.extend(args_json.get('env_var', []))
   args.xctest = args_json.get('xctest', args.xctest)
   test_args.extend(args_json.get('test_args', []))
 
   sys.exit(main(args, test_args))