gn-check: Fix //chrome/services/util_win:*

Add missing dependency.

R=estaab@chromium.org

Bug: 1158927
Change-Id: Ia053d67376ddd6015722de4ae91999a9ceffd67e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2673171
Commit-Queue: Erik Staab <estaab@chromium.org>
Reviewed-by: Patrick Monette <pmonette@chromium.org>
Reviewed-by: Erik Staab <estaab@chromium.org>
Auto-Submit: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#850657}

.gn

@@ -76,7 +76,6 @@ no_check_targets = [
   "//chrome/browser/touch_to_fill/android:*",  # 8 errors
   "//chrome/notification_helper:*",  # 4 errors
   "//chrome/services/removable_storage_writer:*",  # 1 error
-  "//chrome/services/util_win:*",  # 1 error
   "//chrome/test:*",  # 2682 errors
 
   "//clank/third_party/gvr_shim:*",  # 1 error

chrome/services/util_win/BUILD.gn

@@ -41,6 +41,7 @@ source_set("unit_tests") {
   deps = [
     ":lib",
     "//base",
+    "//base/test:test_support",
     "//components/variations",
     "//testing/gtest",
   ]