Large IWYU cleanup for seccomp-bpf

sandbox/linux/seccomp-bpf/syscall_iterator_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 "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 #include "sandbox/linux/seccomp-bpf/syscall_iterator.h"
+
+#include <stdint.h>
+
+#include "sandbox/linux/seccomp-bpf/linux_seccomp.h"
 #include "sandbox/linux/tests/unit_tests.h"
 
 namespace sandbox {
 
 namespace {
 
 SANDBOX_TEST(SyscallIterator, Monotonous) {
   for (int i = 0; i < 2; ++i) {
     bool invalid_only = !i;  // Testing both |invalid_only| cases.
     SyscallIterator iter(invalid_only);
@@ skipping 150 matching lines @@
     next = iter.Next();
   }
   SANDBOX_ASSERT(next == MAX_SYSCALL + 1);
 #endif  // defined(__arm__)
 }
 #endif  // defined(__mips__)
 
 }  // namespace
 
 }  // namespace sandbox