Update sandbox/linux from upstream

sandbox/linux/sandbox_linux.gypi

 # 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': {
     'conditions': [
       ['OS=="linux"', {
         'compile_suid_client': 1,
         'compile_credentials': 1,
@@ skipping 119 matching lines @@
       'sources': [
         'bpf_dsl/bpf_dsl.cc',
         'bpf_dsl/bpf_dsl.h',
         'bpf_dsl/bpf_dsl_forward.h',
         'bpf_dsl/bpf_dsl_impl.h',
         'bpf_dsl/codegen.cc',
         'bpf_dsl/codegen.h',
         'bpf_dsl/cons.h',
         'bpf_dsl/dump_bpf.cc',
         'bpf_dsl/dump_bpf.h',
+        'bpf_dsl/errorcode.cc',
+        'bpf_dsl/errorcode.h',
         'bpf_dsl/linux_syscall_ranges.h',
         'bpf_dsl/policy.cc',
         'bpf_dsl/policy.h',
         'bpf_dsl/policy_compiler.cc',
         'bpf_dsl/policy_compiler.h',
         'bpf_dsl/seccomp_macros.h',
         'bpf_dsl/seccomp_macros.h',
         'bpf_dsl/syscall_set.cc',
         'bpf_dsl/syscall_set.h',
         'bpf_dsl/trap_registry.h',
         'bpf_dsl/verifier.cc',
         'bpf_dsl/verifier.h',
         'seccomp-bpf/die.cc',
         'seccomp-bpf/die.h',
-        'seccomp-bpf/errorcode.cc',
-        'seccomp-bpf/errorcode.h',
         'seccomp-bpf/sandbox_bpf.cc',
         'seccomp-bpf/sandbox_bpf.h',
         'seccomp-bpf/syscall.cc',
         'seccomp-bpf/syscall.h',
         'seccomp-bpf/trap.cc',
         'seccomp-bpf/trap.h',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         'sandbox_services',
@@ skipping 137 matching lines @@
         'system_headers/mips_linux_ucontext.h',
         'system_headers/x86_32_linux_syscalls.h',
         'system_headers/x86_64_linux_syscalls.h',
       ],
       'include_dirs': [
         '..',
       ],
     },
     {
       # We make this its own target so that it does not interfere
-      # with our tests.
+      # with our tests, and so that it may be selectively included
+      # in ports which need it.
       'target_name': 'libc_urandom_override',
       'type': 'static_library',
       'sources': [
         'services/libc_urandom_override.cc',
         'services/libc_urandom_override.h',
       ],
       'dependencies': [
         '../base/base.gyp:base',
       ],
       'include_dirs': [
@@ skipping 83 matching lines @@
             '../../build/isolate.gypi',
           ],
           'sources': [
             '../sandbox_linux_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }