Update from https://crrev.com/315085

sandbox/linux/bpf_dsl/syscall_set.h

Index: sandbox/linux/bpf_dsl/syscall_set.h
diff --git a/sandbox/linux/seccomp-bpf/syscall_iterator.h b/sandbox/linux/bpf_dsl/syscall_set.h
similarity index 93%
rename from sandbox/linux/seccomp-bpf/syscall_iterator.h
rename to sandbox/linux/bpf_dsl/syscall_set.h
index 5080fcc09a21070ae0d81881d9e0f37733d9e852..b9f076d9321a392b5a6f85b99430ccbe1bd008e3 100644
--- a/sandbox/linux/seccomp-bpf/syscall_iterator.h
+++ b/sandbox/linux/bpf_dsl/syscall_set.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef SANDBOX_LINUX_SECCOMP_BPF_SYSCALL_ITERATOR_H__
-#define SANDBOX_LINUX_SECCOMP_BPF_SYSCALL_ITERATOR_H__
+#ifndef SANDBOX_LINUX_BPF_DSL_SYSCALL_SET_H__
+#define SANDBOX_LINUX_BPF_DSL_SYSCALL_SET_H__
 
 #include <stdint.h>
 
@@ -14,8 +14,6 @@
 
 namespace sandbox {
 
-// TODO(mdempsky): Rename this header to syscall_set.h.
-
 // Iterates over the entire system call range from 0..0xFFFFFFFFu. This
 // iterator is aware of how system calls look like and will skip quickly
 // over ranges that can't contain system calls. It iterates more slowly
@@ -102,4 +100,4 @@ SANDBOX_EXPORT bool operator!=(const SyscallSet::Iterator& lhs,
 
 }  // namespace sandbox
 
-#endif  // SANDBOX_LINUX_SECCOMP_BPF_SYSCALL_ITERATOR_H__
+#endif  // SANDBOX_LINUX_BPF_DSL_SYSCALL_SET_H__