Add the SeatbeltExec classes to facilitate the V2 sandbox.

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")
+import("//third_party/protobuf/proto_library.gni")
 
 component("sandbox") {
   sources = [
     "bootstrap_sandbox.cc",
     "bootstrap_sandbox.h",
     "launchd_interception_server.cc",
     "launchd_interception_server.h",
     "mach_message_server.cc",
     "mach_message_server.h",
     "message_server.h",
     "os_compatibility.cc",
     "os_compatibility.h",
     "policy.cc",
     "policy.h",
     "pre_exec_delegate.cc",
     "pre_exec_delegate.h",
     "xpc.h",
     "xpc_message_server.cc",
     "xpc_message_server.h",
   ]
 
   defines = [ "SANDBOX_IMPLEMENTATION" ]
   libs = [ "bsm" ]
 
   deps = [
     "//base",
   ]
 }
 
+proto_library("seatbelt_proto") {

[Robert Sesek, 2017/05/10 15:25:28]

Restrict |visibility = [":*"]|.

[Greg K, 2017/05/11 17:44:14]

Done.

+  sources = [
+    "seatbelt.proto",
+  ]
+}
+
 component("seatbelt") {
   sources = [
     "sandbox_compiler.cc",
     "sandbox_compiler.h",
     "seatbelt.cc",
     "seatbelt.h",
+    "seatbelt_exec.cc",
+    "seatbelt_exec.h",
     "seatbelt_export.h",
   ]
   libs = [ "sandbox" ]
+  deps = [
+    ":seatbelt_proto",
+    "//base",
+  ]
+  public_deps = [
+    "//third_party/protobuf:protobuf_lite",
+  ]
   defines = [ "SEATBELT_IMPLEMENTATION" ]
 }
 
 test("sandbox_mac_unittests") {
   sources = [
     "bootstrap_sandbox_unittest.mm",
     "policy_unittest.cc",
     "sandbox_mac_compiler_unittest.mm",
     "sandbox_mac_compiler_v2_unittest.mm",
+    "sandbox_mac_seatbelt_exec_unittest.cc",
     "xpc_message_server_unittest.cc",
   ]
 
   libs = [
     "CoreFoundation.framework",
     "Foundation.framework",
   ]
 
   deps = [
     ":sandbox",
     ":seatbelt",
+    ":seatbelt_proto",
     "//base",
     "//base/test:run_all_unittests",
     "//testing/gtest",
   ]
 }