Add UBSanVptr Linux buildbot (src part).

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 187 matching lines @@
       'CrWinClngLLDdbg tester': 'none',
       'Headless Linux (dbg)':
         '//build/args/bots/chromium.fyi/headless_linux_dbg.gn',
       'LTO Linux Perf': 'gn_official_goma_lto',
       'Libfuzzer Upload Linux ASan': 'gn_release_libfuzzer_asan',
       'Libfuzzer Upload Linux MSan': 'gn_release_libfuzzer_msan',
       'Libfuzzer Upload Linux UBSan': 'gn_release_libfuzzer_ubsan',
       'Linux ARM': 'swarming_gyp_release_bot_arm',
       'Site Isolation Linux': 'gn_release_trybot',
       'Site Isolation Win': 'gyp_release_trybot_x64',
+      'UBSanVptr Linux': 'gn_ubsan_vptr_release_bot',
       'Vista Tests (dbg)(1)': 'none',
       'Vista Tests (dbg)(2)': 'none',
       'WebKit Linux - TraceWrappables': 'swarming_gn_release_bot_x64',
       'Win LKGR (DrM 64)': 'gn_release_drmemory_drfuzz',
       'Win LKGR (DrM)': 'gn_release_drmemory_drfuzz_x86',
       'Win8 Tests (1)': 'none',
       'Win8 Tests (2)': 'none',
       'Windows Browser (DrMemory light) (1)': 'none',
       'Windows Browser (DrMemory light) (2)': 'none',
 
@@ skipping 937 matching lines @@
     ],
 
     'gn_release_trybot': [
       'gn', 'release_trybot',
     ],
 
     'gn_release_trybot_x86': [
       'gn', 'release_trybot', 'x86',
     ],
 
+    'gn_ubsan_vptr_release_bot': [
+      'gn', 'ubsan_vptr', 'release_bot',
+    ],
+
     'gyp_asan_lsan_edge_fuzzer_debug_bot': [
       'gyp', 'asan', 'lsan', 'edge', 'fuzzer', 'debug_bot',
     ],
 
     'gyp_asan_lsan_edge_fuzzer_v8_heap_symbolized_release_bot': [
       'gyp', 'asan', 'lsan', 'edge', 'v8_heap', 'symbolized', 'release_bot',
     ],
 
     'gyp_asan_lsan_edge_fuzzer_v8_heap_chromeos_codecs_release_bot': [
       'gyp', 'asan', 'lsan', 'edge', 'v8_heap', 'chromeos_codecs', 
@@ skipping 1011 matching lines @@
       'gn_args': 'is_component_build=true enable_iterator_debugging=false',
       'gyp_defines': 'component=shared_library build_for_tool=drmemory',
     },
 
     'valgrind': {
       'gn_args': 'error', # TODO(GYP): implement build_for_tool=memcheck
       'gyp_defines': 'build_for_tool=memcheck',
     }
   },
 }