crashpad/continuous: Use bot_update.

scripts/slave/recipes/crashpad/continuous.py

 # Copyright 2014 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.
 
 """Buildbot recipe definition for the various Crashpad continuous builders.
 """
 
 DEPS = [
   'file',
+  'depot_tools/bot_update',
   'depot_tools/gclient',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/step',
 ]
 
 
 def RunSteps(api):
   """Generates the sequence of steps that will be run by the slave."""
   api.gclient.set_config('crashpad')
-  api.gclient.checkout()
+  api.bot_update.ensure_checkout()
 
   # buildbot sets 'clobber' to the empty string which is falsey, check with 'in'
   if 'clobber' in api.properties:
     api.file.rmtree('out', api.path['checkout'].join('out'))
 
   buildername = api.properties['buildername']
   env = {}
   if '_x86' in buildername:
     env = {'GYP_DEFINES': 'target_arch=ia32'}
   api.gclient.runhooks(env=env)
@@ skipping 36 matching lines @@
       'crashpad_win_x64_rel',
       'crashpad_win_x86_dbg',
       'crashpad_win_x86_rel',
       'crashpad_win_x86_wow64_dbg',
       'crashpad_win_x86_wow64_rel',
   ]
   for t in tests:
     yield(api.test(t) + api.properties.generic(buildername=t))
     yield(api.test(t + '_clobber') +
           api.properties.generic(buildername=t, clobber=True))