V8: Switch on MB on older branches

scripts/slave/recipe_modules/v8/builders.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.
 
 # Contains the bulk of the V8 builder configurations so they can be reused
 # from multiple recipes.
 
 from recipe_engine.types import freeze
 from testing import V8NoExhaustiveVariants, V8Variant, V8VariantNeutral
 
@@ skipping 2654 matching lines @@
         'bot_type': 'builder_tester',
         'testing': {'platform': 'linux'},
       },
     },
   },
 ####### Waterfall: client.dynamorio
   'client.dynamorio': {
     'builders': {
       'linux-v8-dr': {
         'gclient_apply_config': ['dynamorio'],
-        'chromium_apply_config': ['default_compiler', 'v8_ninja', 'goma'],
+        'chromium_apply_config': [
+          'default_compiler', 'v8_ninja', 'goma', 'mb'],
         'v8_config_kwargs': {
           'BUILD_CONFIG': 'Release',
           'TARGET_BITS': 64,
         },
         'bot_type': 'builder_tester',
         'tests': [V8Testing],
         'testing': {'platform': 'linux'},
       },
     },
   },
 }
 
 ####### Waterfall: client.v8.branches
 BRANCH_BUILDERS = {}
 
 def AddBranchBuilder(build_config, arch, bits, presubmit=False,
                      unittests_only=False):
   if unittests_only:
     tests = [Unittests]
   else:
     tests = [V8Testing, Test262, Mozilla]
   if presubmit:
     tests = [Presubmit] + tests
   return {
-    'chromium_apply_config': ['default_compiler', 'v8_ninja', 'goma'],
+    'chromium_apply_config': ['default_compiler', 'v8_ninja', 'goma', 'mb'],
     'v8_config_kwargs': {
       'BUILD_CONFIG': build_config,
       'TARGET_ARCH': arch,
       'TARGET_BITS': bits,
     },
     'bot_type': 'builder_tester',
     'tests': tests,
     'testing': {'platform': 'linux'},
   }
 
@@ skipping 37 matching lines @@
   name = 'V8 s390x - sim - %s' % branch_name
   BRANCH_BUILDERS[name] = AddBranchBuilder(
       'Release', 'intel', 64, unittests_only=True)
   BRANCH_BUILDERS[name]['chromium_apply_config'].append('simulate_s390')
 
 BUILDERS['client.v8.branches'] = {'builders': BRANCH_BUILDERS}
 
 BUILDERS['client.dart.fyi'] = {'builders': {
   'v8-%s-release' % platform: {
     'chromium_apply_config': [
-        'v8_ninja', 'default_compiler', 'goma', 'disassembler'],
+        'v8_ninja', 'default_compiler', 'goma', 'disassembler', 'mb'],
     'v8_config_kwargs': {
       'BUILD_CONFIG': 'Release',
       'TARGET_ARCH': 'intel',
       'TARGET_BITS': 32,
     },
     'bot_type': 'builder',
     'build_gs_archive': 'v8_for_dart_archive',
     'testing': {'platform': platform},
   } for platform in ('win', 'linux', 'mac')
 }}
 
 win = BUILDERS['client.dart.fyi']['builders']['v8-win-release']
 win['chromium_apply_config'].extend(['msvs2013'])
 
 BUILDERS = freeze(BUILDERS)
 BRANCH_BUILDERS = freeze(BRANCH_BUILDERS)
 
 def iter_builders():
   for mastername, master_config in BUILDERS.iteritems():
     builders = master_config['builders']
     for buildername, bot_config in builders.iteritems():
       yield mastername, builders, buildername, bot_config