Update mojo sdk to rev 9fbbc4f0fef1187312316c0ed992342474e139f1

mojo/public/cpp/bindings/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("../../mojo_sdk.gni")
 
 mojo_sdk_source_set("bindings") {
   sources = [
     "array.h",
     "binding.h",
@@ skipping 32 matching lines @@
     "lib/message_header_validator.cc",
     "lib/message_header_validator.h",
     "lib/message_internal.h",
     "lib/message_queue.cc",
     "lib/message_queue.h",
     "lib/no_interface.cc",
     "lib/router.cc",
     "lib/router.h",
     "lib/string_serialization.cc",
     "lib/string_serialization.h",
+    "lib/union_accessor.h",
     "lib/validate_params.h",
     "lib/validation_errors.cc",
     "lib/validation_errors.h",
   ]
 
   deps = [
     ":callback",
   ]
 
   mojo_sdk_deps = [
     "mojo/public/cpp/environment",
     "mojo/public/cpp/system",
   ]
 }
 
 mojo_sdk_source_set("callback") {
   sources = [
     "callback.h",
     "lib/callback_internal.h",
     "lib/template_util.h",
     "lib/shared_data.h",
     "lib/shared_ptr.h",
   ]
 
   mojo_sdk_deps = [ "mojo/public/cpp/system" ]
 }