WebRTC: Enable MB on our remaining Chromium builders.

scripts/slave/recipe_modules/chromium_tests/chromium_webrtc.py

 # Copyright 2015 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.
 
 import collections
 from . import steps
 
 
 _builders = collections.defaultdict(dict)
 
@@ skipping 27 matching lines @@
   if platform == 'android':
     spec['android_config'] = 'base_config'
     spec['chromium_config_kwargs']['TARGET_ARCH'] = 'arm'
     spec['chromium_config_kwargs']['TARGET_PLATFORM'] = 'android'
     spec['chromium_apply_config'].append('android')
     spec['gclient_apply_config'].append('android')
   return spec
 
 
 def BuildSpec(platform, target_bits, build_config='Release',
-              gclient_config='chromium_webrtc', mb=False):
+              gclient_config='chromium_webrtc'):
   spec = BaseSpec(
       bot_type='builder',
-      chromium_apply_config=['dcheck', 'blink_logging_on'],
+      chromium_apply_config=['dcheck', 'blink_logging_on', 'mb'],
       gclient_config=gclient_config,
       platform=platform,
       target_bits=target_bits,
       build_config=build_config)
-
-  if platform == 'android':
-    spec['compile_targets'] = []
-  else:
-    spec['compile_targets'] = ['chromium_builder_webrtc']
-
-  if mb:
-    spec['chromium_apply_config'].append('mb')
-
   return spec
 
 
 class WebRTCTest(steps.GTestTest):
   """A GTestTest with the ability to turn on perf reporting.
 
   WebRTC is the only project that runs correctness tests with perf reporting
   enabled at the same time, which differs from the chromium.perf bots.
   """
   def __init__(self, name, args=None, perf_id=None, **runtest_kwargs):
@@ skipping 84 matching lines @@
 
 AddBuildSpec('Win Builder', 'win', target_bits=32)
 AddBuildSpec('Mac Builder', 'mac')
 AddBuildSpec('Linux Builder', 'linux')
 
 AddTestSpec('Win7 Tester', 'chromium-webrtc-rel-7', 'win', target_bits=32)
 AddTestSpec('Win8 Tester', 'chromium-webrtc-rel-win8', 'win', target_bits=32)
 AddTestSpec('Win10 Tester', 'chromium-webrtc-rel-win10', 'win', target_bits=32)
 AddTestSpec('Mac Tester', 'chromium-webrtc-rel-mac', 'mac')
 AddTestSpec('Linux Tester', 'chromium-webrtc-rel-linux', 'linux')