example flag CL

recipe_modules/gclient/example.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.
 
 DEPS = [
   'gclient',
   'recipe_engine/path',
   'recipe_engine/properties',
 ]
 
@@ skipping 67 matching lines @@
 
   # Use safesync url for lkgr.
   soln.safesync_url = 'https://blink-status.appspot.com/lkgr'
 
   bl_cfg.got_revision_mapping['src/blatley'] = 'got_blatley_revision'
   api.gclient.checkout(
       gclient_config=bl_cfg,
       with_branch_heads=True,
       cwd=api.path['slave_build'].join('src', 'third_party'))
 
+  if api.properties.get('flag'):
+    api.gclient.c.break_locks_flag = True
   api.gclient.break_locks()
 
   del api.gclient.spec_alias
 
   api.gclient.runhooks()
 
   assert not api.gclient.is_blink_mode
 
 
 def GenTests(api):
   yield api.test('basic')
 
+  yield api.test('new_flag') + api.properties(flag=True)
+
   yield api.test('revision') + api.properties(revision='abc')
 
   yield api.test('tryserver') + api.properties.tryserver()