Large IWYU cleanup for seccomp-bpf

sandbox/linux/seccomp-bpf/die.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/die.h"
+
 #include <errno.h>
-#include <linux/unistd.h>
+#include <signal.h>
 #include <stdio.h>
 #include <sys/prctl.h>
+#include <sys/syscall.h>
+#include <unistd.h>
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
-#include "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 #include "sandbox/linux/seccomp-bpf/syscall.h"
 
 namespace sandbox {
 
 void Die::ExitGroup() {
   // exit_group() should exit our program. After all, it is defined as a
   // function that doesn't return. But things can theoretically go wrong.
   // Especially, since we are dealing with system call filters. Continuing
   // execution would be very bad in most cases where ExitGroup() gets called.
   // So, we'll try a few other strategies too.
@@ skipping 51 matching lines @@
     // probably prefer them over a loop that blocks.
     ignore_result(
         HANDLE_EINTR(Syscall::Call(__NR_write, 2, s.c_str(), s.length())));
   }
 }
 
 bool Die::simple_exit_ = false;
 bool Die::suppress_info_ = false;
 
 }  // namespace sandbox