Add another MSan tester to chromium.fyi.

masters/master.chromium.fyi/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright (c) 2012 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.
 
 # See master.experimental/slaves.cfg for documentation.
 
 
@@ skipping 63 matching lines @@
   {
     'master': 'ChromiumFYI',
     'builder': 'Chromium Linux MSan',
     'hostname': 'vm841-m1',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
   {
     'master': 'ChromiumFYI',
+    'builder': 'Chromium Linux MSan (browser tests)',
+    'hostname': 'vm855-m1',
+    'os': 'linux',
+    'version': 'precise',
+    'bits': '64',
+  },
+  {
+    'master': 'ChromiumFYI',
     'builder': 'Windows Builder (DrMemory)',
     'hostname': 'vm909-m1',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   },
   {
     'master': 'ChromiumFYI',
     'builder': 'Windows Tests (DrMemory XP)',
     'hostname': 'vm471-m1',
@@ skipping 734 matching lines @@
 ] + [
   # Deployed for http://crbug.com/166949 but not used yet.
   {
     'master': 'ChromiumFYIUnused',
     'hostname': 'vm889-m1' ,
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   }
 ]