Add trusty builders in mb_config.pyl.

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': {
     'chromeos.chrome': {
@@ skipping 211 matching lines @@
       'Android Builder': 'android_release_bot_minimal_symbols',
       'Android Clang Builder (dbg)': 'android_clang_asan_errorprone_findbugs_debug_bot_minimal_symbols',
       'Android Tests (dbg)': 'android_debug_static_bot',
       'Android Tests': 'android_release_bot_minimal_symbols',
       'Blimp Linux (dbg)': '//build/args/bots/chromium.linux/blimp_linux_dbg.gn',
       'Cast Android (dbg)': 'android_cast_debug_static_bot',
       'Cast Linux': 'cast_release_bot',
       'Linux Builder (dbg)': 'debug_bot',
       'Linux Builder (dbg)(32)': 'debug_bot_x86',
       'Linux Builder': 'release_bot',
+      # Trusty bots.
+      'Cast Linux Trusty': 'cast_release_bot',
+      'Linux Builder Trusty (dbg)': 'debug_bot',
+      'Linux Builder Trusty (dbg)(32)': 'debug_bot_x86',
+      'Linux Builder Trusty': 'release_bot',
     },
 
     'chromium.lkgr': {
       'ASAN Debug': 'asan_lsan_edge_debug_bot',
       'ASAN Release Media': 'asan_lsan_edge_fuzzer_v8_heap_chromeos_codecs_release_bot',
       'ASAN Release': 'asan_lsan_edge_fuzzer_v8_heap_release_bot',
       'ASan Debug (32-bit x86 with V8-ARM)': 'asan_edge_v8_heap_debug_bot_hybrid',
       'ASan Release (32-bit x86 with V8-ARM)': 'asan_edge_fuzzer_v8_heap_release_bot_hybrid',
       'ASan Release Media (32-bit x86 with V8-ARM)': 'asan_edge_fuzzer_v8_heap_chromeos_codecs_release_bot_hybrid',
       'ChromiumOS ASAN Release': 'chromeos_asan_lsan_edge_fuzzer_v8_heap_release_bot',
@@ skipping 1503 matching lines @@
       'gn_args': 'target_cpu="x86"',
     },
 
     'drfuzz': { 'gn_args': 'use_drfuzz=true' },
 
     'drmemory': {
       'gn_args': 'is_component_build=true enable_iterator_debugging=false',
     },
   },
 }