Wrap deprecated sandbox functions in C++ class.

sandbox/mac/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/mac/mac_sdk.gni")
 import("//testing/test.gni")
 
 component("sandbox") {
   sources = [
     "bootstrap_sandbox.cc",
@@ skipping 15 matching lines @@
   ]
 
   defines = [ "SANDBOX_IMPLEMENTATION" ]
   libs = [ "bsm" ]
 
   deps = [
     "//base",
   ]
 }
 
+component("seatbelt") {
+  sources = [
+    "seatbelt.cc",
+    "seatbelt.h",
+    "seatbelt_export.h",
+  ]
+  libs = [ "sandbox" ]
+  defines = [ "SEATBELT_IMPLEMENTATION" ]
+}
+
 test("sandbox_mac_unittests") {
   sources = [
     "bootstrap_sandbox_unittest.mm",
     "policy_unittest.cc",
     "xpc_message_server_unittest.cc",
   ]
 
   libs = [
     "CoreFoundation.framework",
     "Foundation.framework",
   ]
 
   deps = [
     ":sandbox",
     "//base",
     "//base/test:run_all_unittests",
     "//testing/gtest",
   ]
 }