Adds bot_update to depot_tools.

infra/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',
+]
+
+def RunSteps(api):
+  src_cfg = api.gclient.make_config(GIT_MODE=True)
+  soln = src_cfg.solutions.add()
+  soln.name = 'src'
+  soln.url = 'https://chromium.googlesource.com/chromium/src.git'
+  soln.revision = api.properties.get('revision')
+  src_cfg.parent_got_revision_mapping['parent_got_revision'] = 'got_revision'
+  api.gclient.c = src_cfg
+  api.gclient.checkout()
+
+  api.gclient.spec_alias = 'WebKit'
+  bl_cfg = api.gclient.make_config()
+  soln = bl_cfg.solutions.add()
+  soln.name = 'WebKit'
+  soln.url = 'svn://svn.chromium.org/blink/trunk'
+  bl_cfg.revisions['third_party/WebKit'] = '123'
+
+  # 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'))
+
+  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('revision') + api.properties(revision='abc')
+
+  yield api.test('tryserver') + api.properties.tryserver()