Convert test_support source sets to static libs

components/component_updater/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.
 
-source_set("component_updater") {
+static_library("component_updater") {
   sources = [
     "component_updater_paths.cc",
     "component_updater_paths.h",
     "component_updater_service.cc",
     "component_updater_service.h",
     "component_updater_service_internal.h",
     "component_updater_switches.cc",
     "component_updater_switches.h",
     "component_updater_url_constants.cc",
     "component_updater_url_constants.h",
     "configurator_impl.cc",
     "configurator_impl.h",
     "default_component_installer.cc",
     "default_component_installer.h",
     "pref_names.cc",
     "pref_names.h",
     "timer.cc",
     "timer.h",
   ]
 
   deps = [
     "//base",
     "//components/update_client",
     "//components/version_info",
     "//ui/base",
     "//url",
   ]
 }
 
-source_set("test_support") {
+static_library("test_support") {
   testonly = true
   sources = [
     "mock_component_updater_service.cc",
     "mock_component_updater_service.h",
   ]
 
   public_deps = [
     ":component_updater",
     "//base",
     "//testing/gmock",
@@ skipping 10 matching lines @@
 
   deps = [
     ":component_updater",
     "//base",
     "//base/test:test_support",
     "//components/update_client:test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }