Turn on subannotations when runtests has annotate parameter.

scripts/slave/recipe_modules/chromium/api.py

 # Copyright 2013 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.
 
 from slave import recipe_api
 
 class ChromiumApi(recipe_api.RecipeApi):
   def get_config_defaults(self):
     return {
       'HOST_PLATFORM': self.m.platform.name,
@@ skipping 43 matching lines @@
       test += '.exe'
 
     full_args = [
       '--target', self.c.build_config_fs,
       '--build-dir', self.m.path.checkout(self.c.build_dir),
       ('--xvfb' if xvfb else '--no-xvfb')
     ]
     full_args += self.m.json.property_args()
     if annotate:
       full_args.append('--annotate=%s' % annotate)
+      kwargs['allow_subannotations'] = True
     if results_url:
       full_args.append('--results-url=%s' % results_url)
     if ext == '.py':
       full_args.append('--run-python-script')
     full_args.append(test)
     full_args.extend(args)
 
     # By default, don't abort the recipe for a single test failure.
     kwargs.setdefault('can_fail_build', False)
 
     return self.m.python(
       name or t_name,
       self.m.path.build('scripts', 'slave', 'runtest.py'),
       full_args,
       **kwargs
     )
 
   def runhooks(self, **kwargs):
     """Run the build-configuration hooks for chromium."""
     env = kwargs.get('env', {})
     env.update(self.c.gyp_env.as_jsonish())
     kwargs['env'] = env
     return self.m.gclient.runhooks(**kwargs)