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

sandbox/linux/seccomp-bpf/trap.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 <errno.h>
 #include <signal.h>
+#include <string.h>
 #include <sys/prctl.h>
 #include <sys/syscall.h>
 
 #ifndef SECCOMP_BPF_STANDALONE
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 #endif
 
 #include "sandbox/linux/seccomp-bpf/codegen.h"
 #include "sandbox/linux/seccomp-bpf/die.h"
@@ skipping 318 matching lines @@
   if (global_trap_ && id > 0 && id <= global_trap_->trap_array_size_) {
     return global_trap_->trap_array_[id - 1];
   } else {
     return ErrorCode();
   }
 }
 
 Trap *Trap::global_trap_;
 
 }  // namespace playground2