[Android] Switch the x86, x64, and mips builders on chromium.android to mb.

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',
   'chromium_android',
   'bot_update',
   'gclient',
   'recipe_engine/path',
   'recipe_engine/properties',
   'recipe_engine/step',
   'tryserver',
 ]
 
 @contextmanager
 def FYIStep():
   try:
     yield
   except recipe_api.StepFailure:
     pass
 
 BUILDERS = freeze({
   'chromium.android': {
     'Android x64 Builder (dbg)': {
-      'recipe_config': 'x64_builder',
+      'recipe_config': 'x64_builder_mb',
       'check_licenses': FYIStep,
       'gclient_apply_config': ['android', 'chrome_internal'],
     },
     'Android x86 Builder (dbg)' : {
-      'recipe_config': 'x86_builder',
+      'recipe_config': 'x86_builder_mb',
       'check_licenses': FYIStep,
       'gclient_apply_config': ['android', 'chrome_internal'],
     },
     'Android MIPS Builder (dbg)': {
-      'recipe_config': 'mipsel_builder',
+      'recipe_config': 'mipsel_builder_mb',
       'check_licenses': FYIStep,
       'gclient_apply_config': ['android', 'chrome_internal'],
     },
   },
   'chromium.perf.fyi': {
     'android_oilpan_builder': {
       'recipe_config': 'oilpan_builder',
       'gclient_apply_config': ['android', 'chrome_internal'],
       'kwargs': {
         'BUILD_CONFIG': 'Release',
@@ skipping 178 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'])