Componentize component_updater: Move a bunch of tests to component.

components/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.
 
 # Collection of all components. You wouldn't link to this, but this is rather
 # to reference the files so they can be compiled by the build system.
 group("all_components") {
   visibility = "//:*"  # Only for the root targets to bring in.
 
   deps = [
@@ skipping 175 matching lines @@
   # (this would at least include the component itself), they should be on the
   # test source set and not here.
   deps = [
     "//components/auto_login_parser:unit_tests",
     "//components/autofill/content/browser:unit_tests",
     "//components/autofill/core/browser:unit_tests",
     "//components/autofill/core/common:unit_tests",
     "//components/bookmarks/browser:unit_tests",
     "//components/captive_portal:unit_tests",
     "//components/cloud_devices/common:unit_tests",
+    "//components/component_updater:unit_tests",
     "//components/crx_file:unit_tests",
     "//components/data_reduction_proxy/browser:unit_tests",
     "//components/data_reduction_proxy/common:unit_tests",
     "//components/dom_distiller/core:unit_tests",
     "//components/domain_reliability:unit_tests",
     "//components/omnibox:unit_tests",
   ]
 
   # TODO(GYP) need this target.
   #'breakpad/app/crash_keys_win_unittest.cc',
 
   # Precache tests need these defines.
   #configs += [ "//components/precache/core:precache_config" ]
 }
 
 }