Refactored ErrorCode into it's own class

sandbox/linux/seccomp-bpf/verifier.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/verifier.h"
 
 
 namespace playground2 {
 
@@ skipping 18 matching lines @@
 #if defined(__x86_64__) && defined(__ILP32__)
     int sysnum = nr |  0x40000000;
 #else
     int sysnum = nr & ~0x40000000;
 #endif
 #else
     int sysnum = nr;
 #endif
 
     struct arch_seccomp_data data = { sysnum, SECCOMP_ARCH };
-    Sandbox::ErrorCode code = evaluateSyscall(sysnum);
+    ErrorCode code = evaluateSyscall(sysnum);
     uint32_t computedRet = evaluateBPF(program, data, err);
     if (*err) {
       return false;
-    } else if (computedRet != code) {
+    } else if (computedRet != code.err()) {
       *err = "Exit code from BPF program doesn't match";
       return false;
     }
   }
   return true;
 }
 
 uint32_t Verifier::evaluateBPF(const std::vector<struct sock_filter>& program,
                                const struct arch_seccomp_data& data,
                                const char **err) {
@@ skipping 100 matching lines @@
 uint32_t Verifier::ret(State *, const struct sock_filter& insn,
                        const char **err) {
   if (BPF_SRC(insn.code) != BPF_K) {
     *err = "Invalid BPF_RET instruction";
     return 0;
   }
   return insn.k;
 }
 
 }  // namespace