sandbox/linux: refactor bpf_dsl dependency on die.h

sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc

Index: sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
diff --git a/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc b/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
index e884774146d58738b5cbb4342fc4cb4508081e75..a0eeb3b713a0a7e2747bdd95db20987e28cedca3 100644
--- a/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
+++ b/sandbox/linux/integration_tests/bpf_dsl_seccomp_unittest.cc
@@ -76,6 +76,15 @@ void EnableUnsafeTraps() {
   Die::SuppressInfoMessages(true);
 }
 
+intptr_t KillTrap(const struct arch_seccomp_data& args, void* aux) {
+  BPF_ASSERT(false);
+  for (;;) _exit(1);
+}
+
+ResultExpr Kill(const char *msg) {
+  return Trap(KillTrap, msg);
+}
+
 // BPF_TEST does a lot of the boiler-plate code around setting up a
 // policy and optional passing data between the caller, the policy and
 // any Trap() handlers. This is great for writing short and concise tests,