Added a new Verifier class to the BPF compiler.

sandbox/sandbox.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'variables': {
@@ skipping 141 matching lines @@
                 '../seccompsandbox/seccomp.gyp:seccomp_sandbox',
               ],
             }],
             # This does not include Android.
             [ 'OS=="linux" and (target_arch=="ia32" or target_arch=="x64")', {
               'type': 'static_library',
               # Compile seccomp mode 2 code on Linux
               'sources': [
                 'linux/seccomp-bpf/sandbox_bpf.cc',
                 'linux/seccomp-bpf/sandbox_bpf.h',
+                'linux/seccomp-bpf/verifier.cc',
+                'linux/seccomp-bpf/verifier.h',
               ],
               'dependencies': [
                 '../base/base.gyp:base',
               ],
               'include_dirs': [
                 '..',
               ],
             }],
           ],
         },
@@ skipping 224 matching lines @@
             'POCDLL_EXPORTS',
           ],
           'include_dirs': [
             '..',
           ],
         },
       ],
     }],
   ],
 }