Update from https://crrev.com/306655

sandbox/linux/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 
 declare_args() {
   compile_suid_client = is_linux
 
   compile_credentials = is_linux
@@ skipping 53 matching lines @@
   }
 }
 
 # The main sandboxing test target.
 test("sandbox_linux_unittests") {
   sources = [
     "services/scoped_process_unittest.cc",
     "services/syscall_wrappers_unittest.cc",
     "services/thread_helpers_unittests.cc",
     "services/yama_unittests.cc",
+    "syscall_broker/broker_file_permission_unittest.cc",
     "syscall_broker/broker_process_unittest.cc",
     "tests/main.cc",
     "tests/scoped_temporary_file.cc",
     "tests/scoped_temporary_file.h",
     "tests/scoped_temporary_file_unittest.cc",
     "tests/test_utils_unittest.cc",
     "tests/unit_tests_unittest.cc",
   ]
 
   deps = [
@@ skipping 17 matching lines @@
   if (use_seccomp_bpf) {
     sources += [
       "bpf_dsl/bpf_dsl_more_unittest.cc",
       "bpf_dsl/bpf_dsl_unittest.cc",
       "bpf_dsl/cons_unittest.cc",
       "seccomp-bpf-helpers/baseline_policy_unittest.cc",
       "seccomp-bpf-helpers/syscall_parameters_restrictions_unittests.cc",
       "seccomp-bpf/bpf_tests_unittest.cc",
       "seccomp-bpf/codegen_unittest.cc",
       "seccomp-bpf/errorcode_unittest.cc",
+      "seccomp-bpf/sandbox_bpf_unittest.cc",
       "seccomp-bpf/syscall_iterator_unittest.cc",
       "seccomp-bpf/syscall_unittest.cc",
     ]
   }
   if (compile_credentials) {
     sources += [
       "services/credentials_unittest.cc",
+      "services/proc_util_unittest.cc",
       "services/unix_domain_socket_unittest.cc",
     ]
   }
 }
 
 # TODO(GYP) Android version of this test.
 #    {
 #      # This target is the shared library used by Android APK (i.e.
 #      # JNI-friendly) tests.
 #      "target_name": "sandbox_linux_jni_unittests",
@@ skipping 38 matching lines @@
     "seccomp-bpf/syscall_iterator.cc",
     "seccomp-bpf/syscall_iterator.h",
     "seccomp-bpf/trap.cc",
     "seccomp-bpf/trap.h",
     "seccomp-bpf/verifier.cc",
     "seccomp-bpf/verifier.h",
   ]
   defines = [ "SANDBOX_IMPLEMENTATION" ]
 
   deps = [
+    ":sandbox_services",
     ":sandbox_services_headers",
     "//base",
   ]
 }
 
 component("seccomp_bpf_helpers") {
   sources = [
     "seccomp-bpf-helpers/baseline_policy.cc",
     "seccomp-bpf-helpers/baseline_policy.h",
     "seccomp-bpf-helpers/sigsys_handlers.cc",
@@ skipping 42 matching lines @@
     "services/syscall_wrappers.h",
     "services/thread_helpers.cc",
     "services/thread_helpers.h",
     "services/yama.h",
     "services/yama.cc",
     "syscall_broker/broker_channel.cc",
     "syscall_broker/broker_channel.h",
     "syscall_broker/broker_client.cc",
     "syscall_broker/broker_client.h",
     "syscall_broker/broker_common.h",
+    "syscall_broker/broker_file_permission.cc",
+    "syscall_broker/broker_file_permission.h",
     "syscall_broker/broker_host.cc",
     "syscall_broker/broker_host.h",
     "syscall_broker/broker_policy.cc",
     "syscall_broker/broker_policy.h",
     "syscall_broker/broker_process.cc",
     "syscall_broker/broker_process.h",
   ]
 
   defines = [ "SANDBOX_IMPLEMENTATION" ]
 
   if (compile_credentials) {
     sources += [
       "services/credentials.cc",
       "services/credentials.h",
+      "services/proc_util.cc",
+      "services/proc_util.h",
     ]
     # For capabilities.cc.
     configs += [ "//build/config/linux:libcap" ]
   }
 
   deps = [
     "//base",
   ]
 }
 
@@ skipping 66 matching lines @@
   #      'type': 'none',
   #      'variables': {
   #        'test_suite_name': 'sandbox_linux_jni_unittests',
   #      },
   #      'dependencies': [
   #        'sandbox_linux_jni_unittests',
   #      ],
   #      'includes': [ '../../build/apk_test.gypi' ],
   #      }
 }