Add mb config for chromium.chromedriver.

tools/mb/mb_config.pyl

 # 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.
 
 {
   # This is a map of buildbot master names -> buildbot builder names ->
   # config names (where each config name is a key in the 'configs' dict,
   # below). MB uses this dict to look up which config to use for a given bot.
   'masters': {
     # Take care when changing any of these builders to ensure that you do not
@@ skipping 51 matching lines @@
       'Marshmallow Tablet Tester': 'android_gn_debug_static_bot',
     },
 
     'chromium.chrome': {
       'Google Chrome ChromeOS': 'gn_official_goma_chromeos',
       'Google Chrome Linux x64': 'gn_official_goma',
       'Google Chrome Mac': 'gn_official_goma',
       'Google Chrome Win': 'gn_official_goma_minimal_symbols_x86',
     },
 
+    'chromium.chromedriver': {
+      'Win7': 'gn_release_bot_x86',
+      'Mac 10.6': 'gn_release_bot',
+      'Linux': 'gn_release_bot',
+      'Linux32': 'gn_release_bot_x86',

[Dirk Pranke, 2016/07/22 03:11:46]

Do you need Linux 32? We don't support Chrome on Linux 32 anymore ...

[samuong, 2016/07/22 03:46:27]

We still have a linux32 bot, which tests chromedriver against 32-bit chromium
builds. It'll probably go away one day, but in the meantime it's still there, so
it needs to be configured.

+    },
+
     'chromium.chromiumos': {
       'ChromiumOS amd64-generic Compile': 'cros_chrome_sdk_gn',
       'ChromiumOS daisy Compile': 'cros_chrome_sdk_gn',
       'ChromiumOS x86-generic Compile': 'cros_chrome_sdk_gn',
       'Linux ChromiumOS Builder': 'swarming_chromeos_gn_release_bot',
       'Linux ChromiumOS Builder (dbg)': 'swarming_chromeos_gn_debug_bot',
       'Linux ChromiumOS Full': 'swarming_chromeos_gn_release_bot',
       'Linux ChromiumOS GN (dbg)': 'chromeos_gn_debug_bot',
       'Linux ChromiumOS GN': 'chromeos_ozone_gn_release_bot',
       'Linux ChromiumOS Ozone Builder':
@@ skipping 2245 matching lines @@
     },
 
     'drfuzz': { 'gn_args': 'use_drfuzz=true' },
 
     'drmemory': {
       'gn_args': 'is_component_build=true enable_iterator_debugging=false',
       'gyp_defines': 'component=shared_library build_for_tool=drmemory',
     },
   },
 }