Add new builders to the chromium.memory config files.

tools/mb/mb_config.pyl

Index: tools/mb/mb_config.pyl
diff --git a/tools/mb/mb_config.pyl b/tools/mb/mb_config.pyl
index 29585d80e9bccba91a8c834526fed664a9837205..f5fc2e781031d83d1a8d83c388c5abfb5630d50a 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -306,6 +306,8 @@
     'chromium.memory': {
       'Linux ASan LSan Builder': 'asan_lsan_release_trybot',
       'Linux Chromium OS ASan LSan Builder': 'asan_lsan_chromeos_release_trybot',
+      'Linux ChromiumOS MSan Builder': 'chromeos_msan_release_bot',
+      'Linux MSan Builder': 'msan_release_bot',
       'Linux TSan Builder': 'tsan_disable_nacl_release_bot',
       'Mac ASan 64 Builder': 'asan_full_symbols_disable_nacl_release_bot_dcheck_always_on',
     },