[Android] Use ensure_goma in android/builder.

scripts/slave/recipes/android/builder.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.
 
 from contextlib import contextmanager
 from recipe_engine import recipe_api
 from recipe_engine.types import freeze
 
 DEPS = [
   'chromium',
@@ skipping 176 matching lines @@
   if bot_config.get('set_component_rev'):
     # If this is a component build and the main revision is e.g. blink,
     # webrtc, or v8, the custom deps revision of this component must be
     # dynamically set to either:
     # (1) 'revision' from the waterfall, or
     # (2) 'HEAD' for forced builds with unspecified 'revision'.
     component_rev = revision
     dep = bot_config.get('set_component_rev')
     api.gclient.c.revisions[dep['name']] = dep['rev_str'] % component_rev
 
+  api.chromium.ensure_goma()
   api.bot_update.ensure_checkout()
   api.chromium_android.clean_local_files()
 
   api.chromium.runhooks()
 
   if bot_config.get('run_mb'):
     api.chromium.run_mb(mastername, buildername, use_goma=True)
 
   if bot_config.get('check_licenses'):
     with bot_config['check_licenses']():
@@ skipping 52 matching lines @@
         '_'.join(_sanitize_nonalpha(step) for step in steps))) +
       props(mastername=mastername, buildername=buildername) +
       reduce(lambda a, b: a + b,
              (api.step_data(step, retcode=1) for step in steps))
     )
 
   yield step_failure(mastername='chromium.android',
                      buildername='Android x64 Builder (dbg)',
                      steps=['check licenses'])