perf.fyi: Add 'mb' to the Win Clang Builder

scripts/slave/recipe_modules/chromium_tests/chromium_perf_fyi.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 . import chromium_perf
 from . import steps
 
 import DEPS
 CHROMIUM_CONFIG_CTX = DEPS['chromium'].CONFIG_CTX
 GCLIENT_CONFIG_CTX = DEPS['gclient'].CONFIG_CTX
 
 
 SPEC = {
   'builders': {},
   'settings': chromium_perf.SPEC['settings'],
 }
 
 
-@CHROMIUM_CONFIG_CTX(includes=['chromium_win_clang_official'])
+@CHROMIUM_CONFIG_CTX(includes=['chromium_win_clang_official', 'mb'])
 def chromium_perf_clang(c):
   pass
 
 
 @GCLIENT_CONFIG_CTX(includes=['chromium_perf'])
 def chromium_perf_clang(c):
   pass
 
 
 def _AddBuildSpec(name, perf_id, platform, config_name='chromium_perf',
@@ skipping 40 matching lines @@
 
 _AddTestSpec('Mac Power Dual-GPU Perf', 'mac-power-dual-gpu', 'mac')
 _AddTestSpec('Mac Power Low-End Perf', 'mac-power-low-end', 'mac')
 _AddTestSpec('Mac Test Retina Perf', 'mac-test-retina', 'mac')
 
 
 _AddBuildSpec('Win Clang Builder', 'win-clang-builder', 'win',
               config_name='chromium_perf_clang', target_bits=32)
 _AddTestSpec('Win Clang Perf', 'chromium-win-clang', 'win',
              parent_buildername='Win Clang Builder', target_bits=32)