MB: Make Code Search builders use the phase configs.

tools_webrtc/mb/mb_config.pyl

 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 # FOR DETAILS ON THIS FILE SEE THE MAIN COPY IN //tools/mb/mb_config.pyl.
 # This is configuration for standalone WebRTC bots. It is used to keep the bot
@@ skipping 90 matching lines @@
 
       # Android
       'Android (swarming)': 'android_release_bot_arm',
       'Android ASan (swarming)': 'android_asan_shared_release_bot_arm',
       # Windows
       'Win (swarming)': 'release_bot_x86',
       'Win64 Debug (Win8)': 'debug_bot_x64',
       'Win64 Debug (Win10)': 'debug_bot_x64',
     },
     'chromium.infra.codesearch': {
-      'codesearch-gen-webrtc-android': 'android_debug_static_bot_arm',
-      'codesearch-gen-webrtc-linux': 'codesearch_gen_linux_bot',
+      'codesearch-gen-webrtc-android': {
+        'android': 'android_debug_static_bot_arm',
+      },
+      'codesearch-gen-webrtc-linux': {
+        'linux': 'codesearch_gen_linux_bot',
+      }
     },
     'tryserver.webrtc': {
       # iOS
       'ios_dbg': 'ios',
       'ios_rel': 'ios',
       'ios_arm64_dbg': 'ios',
       'ios_arm64_rel': 'ios',
       'ios32_sim_ios9_dbg': 'ios',
       'ios64_sim_ios9_dbg': 'ios',
       'ios64_sim_ios10_dbg': 'ios',
@@ skipping 333 matching lines @@
 
     'x64': {
       'gn_args': 'target_cpu="x64"',
     },
 
     'x86': {
       'gn_args': 'target_cpu="x86"',
     },
   },
 }