SECCOMP-BPF: Refactor the BPF sandbox API to use fewer "static" fields and methods.

sandbox/linux/seccomp-bpf/trap.h

 // 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.
 
 #ifndef SANDBOX_LINUX_SECCOMP_BPF_TRAP_H__
 #define SANDBOX_LINUX_SECCOMP_BPF_TRAP_H__
 
+#include <signal.h>
+#include <stdint.h>
+
 #include <map>
 #include <vector>
 
+#include "sandbox/linux/seccomp-bpf/port.h"
+
+
 namespace playground2 {
 
 class ErrorCode;
 
 // The Trap class allows a BPF filter program to branch out to user space by
 // raising a SIGSYS signal.
 // N.B.: This class does not perform any synchronization operations. If
 //   modifications are made to any of the traps, it is the caller's
 //   responsibility to ensure that this happens in a thread-safe fashion.
 //   Preferably, that means that no other threads should be running at that
@@ skipping 84 matching lines @@
   // Our constructor is private. A shared global instance is created
   // automatically as needed.
   // Copying and assigning is unimplemented. It doesn't make sense for a
   // singleton.
   DISALLOW_IMPLICIT_CONSTRUCTORS(Trap);
 };
 
 }  // namespace playground2
 
 #endif  // SANDBOX_LINUX_SECCOMP_BPF_TRAP_H__