Revert of Update mojo sdk to rev afb4440fd5a10cba980878c326180b7ad7960480

mojo/public/cpp/utility/tests/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.
 
 # GYP version: mojo/mojo_base.gyp:mojo_public_utility_unittests
 test("mojo_public_utility_unittests") {
   deps = [
     "//mojo/edk/test:run_all_unittests",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/test_support:test_utils",
     "//mojo/public/cpp/utility",
     "//testing/gtest",
   ]
 
   sources = [
+    "mutex_unittest.cc",
     "run_loop_unittest.cc",
+    "thread_unittest.cc",
   ]
-
-  # crbug.com/342893
-  if (!is_win) {
-    sources += [
-      "mutex_unittest.cc",
-      "thread_unittest.cc",
-    ]
-  }
 }