Large IWYU cleanup for seccomp-bpf

sandbox/linux/seccomp-bpf/codegen.cc

Index: sandbox/linux/seccomp-bpf/codegen.cc
diff --git a/sandbox/linux/seccomp-bpf/codegen.cc b/sandbox/linux/seccomp-bpf/codegen.cc
index c90bffcad30fd02f24bb74fc80e609982a5255d0..47ba39713791e46feee1e1cc69ec511b1f2b2ffa 100644
--- a/sandbox/linux/seccomp-bpf/codegen.cc
+++ b/sandbox/linux/seccomp-bpf/codegen.cc
@@ -2,10 +2,17 @@
 // 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/codegen.h"
+
 #include <stdio.h>
 
+#include <set>
+
 #include "base/logging.h"
-#include "sandbox/linux/seccomp-bpf/codegen.h"
+#include "sandbox/linux/seccomp-bpf/basicblock.h"
+#include "sandbox/linux/seccomp-bpf/die.h"
+#include "sandbox/linux/seccomp-bpf/instruction.h"
+#include "sandbox/linux/seccomp-bpf/linux_seccomp.h"
 
 namespace {