Address more TODO(GYP) in the GN build.

chrome/installer/test/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("//testing/test.gni")
 
 assert(is_win)
 
 executable("alternate_version_generator") {
   testonly = true
@@ skipping 40 matching lines @@
   ]
   deps = [
     ":alternate_version_generator_lib",
     "//base",
     "//base/test:test_support",
     "//chrome/common:constants",
     "//chrome/installer/util:with_rc_strings",
     "//testing/gtest",
   ]
   data_deps = [
-    # 'mini_installer.gyp:mini_installer',  TODO(GYP)
+    "//chrome/installer/mini_installer",
   ]
 }