Disable SandboxBPF.StartSingleThreadedAsMultiThreaded under TSan v2.

sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc

 // 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.
 
 #include <errno.h>
 #include <pthread.h>
 #include <sched.h>
 #include <signal.h>
 #include <sys/prctl.h>
 #include <sys/ptrace.h>
@@ skipping 2232 matching lines @@
 SANDBOX_DEATH_TEST(SandboxBPF, StartMultiThreadedAsSingleThreaded,
     DEATH_MESSAGE("Cannot start sandbox; process is already multi-threaded")) {
   base::Thread thread("sandbox.linux.StartMultiThreadedAsSingleThreaded");
   BPF_ASSERT(thread.Start());
 
   SandboxBPF sandbox;
   sandbox.SetSandboxPolicy(new AllowAllPolicy());
   BPF_ASSERT(!sandbox.StartSandbox(SandboxBPF::PROCESS_SINGLE_THREADED));
 }
 
+// http://crbug.com/407357
+#if !defined(THREAD_SANITIZER)
 SANDBOX_DEATH_TEST(SandboxBPF, StartSingleThreadedAsMultiThreaded,
     DEATH_MESSAGE("Cannot start sandbox; process may be single-threaded when "
                   "reported as not")) {
   SandboxBPF sandbox;
   sandbox.SetSandboxPolicy(new AllowAllPolicy());
   BPF_ASSERT(!sandbox.StartSandbox(SandboxBPF::PROCESS_MULTI_THREADED));
 }
+#endif  // !defined(THREAD_SANITIZER)
 
 }  // namespace
 
 }  // namespace sandbox