Fail tests fast if overriding the Windows registry fails.

chrome/installer/gcapi/BUILD.gn

 # Copyright 2015 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("//chrome/process_version_rc_template.gni")
 import("//testing/test.gni")
 
 assert(is_win)
 
 shared_library("gcapi") {
@@ skipping 47 matching lines @@
   ]
 }
 
 test("gcapi_test") {
   sources = [
     "gcapi_last_run_test.cc",
     "gcapi_omaha_experiment_test.cc",
     "gcapi_reactivation_test.cc",
     "gcapi_test.cc",
     "gcapi_test.rc",
-    "gcapi_test_registry_overrider.cc",
-    "gcapi_test_registry_overrider.h",
     "resource.h",
   ]
 
   deps = [
     ":lib",
     "//base/test:test_support",
     "//chrome/install_static:install_static_util",
     "//chrome/installer/util:with_no_strings",
     "//components/variations",
     "//testing/gtest",
   ]
 
   data_deps = [
     ":gcapi",  # Runtime dependency on this DLL.
   ]
 }