Update from https://crrev.com/306655

sandbox/linux/sandbox_linux_test_sources.gypi

Index: sandbox/linux/sandbox_linux_test_sources.gypi
diff --git a/sandbox/linux/sandbox_linux_test_sources.gypi b/sandbox/linux/sandbox_linux_test_sources.gypi
index cefe96264c713eb4d811615b8f8a4b06075e40c9..5aeacf692d9a402f781ec76a3c06e462a691f839 100644
--- a/sandbox/linux/sandbox_linux_test_sources.gypi
+++ b/sandbox/linux/sandbox_linux_test_sources.gypi
@@ -21,6 +21,7 @@
     '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',
@@ -45,6 +46,7 @@
         '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',
       ],
@@ -52,6 +54,7 @@
     [ 'compile_credentials==1', {
       'sources': [
         'services/credentials_unittest.cc',
+        'services/proc_util_unittest.cc',
         'services/unix_domain_socket_unittest.cc',
       ],
     }],