Pull seccomp-sandbox in via DEPS rather than using an in-tree copy...

sandbox/sandbox.gyp

 # Copyright (c) 2009 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 143 matching lines @@
           'include_dirs': [
             '..',
           ],
         },
         {
           'target_name': 'sandbox',
           'type': '<(library)',
           'conditions': [
             ['target_arch!="arm"', {
                'dependencies': [
-                 'linux/seccomp/seccomp.gyp:seccomp_sandbox',
+                 '../seccompsandbox/seccomp.gyp:seccomp_sandbox',
                ]},
             ],
           ],
         },
       ],
     }],
     [ 'OS=="linux" and selinux==1', {
       # GYP requires that each file have at least one target defined.
       'targets': [
         {
@@ skipping 205 matching lines @@
       ],
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: