Add components resources repack to GN build.

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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
+import("//tools/grit/repack.gni")
 
 # 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") {
   testonly = true  # You shouldn't actually link to this.
   visibility = [ "//:*" ]  # Only for the root targets to bring in.
 
   deps = [
     "//components/auto_login_parser",
     "//components/autofill/content/browser",
@@ skipping 239 matching lines @@
       "//components/variations:unit_tests",
       "//components/web_resource:unit_tests",
       "//components/webdata/common:unit_tests",
 
       # These are the deps required by the code in this target.
       "//base",
       "//base/test:test_support",
       "//content/test:test_support",
       "//ui/base",
     ]
+    data_deps = [ ":components_tests_pak" ]
 
     if (is_android) {
       deps += [ "//components/data_reduction_proxy/content/browser: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" ]
 
     if (toolkit_views) {
       # TODO(GYP) enable this as above.
       #deps += [ "//components/constrained_window:unit_tests" ]
     }
     if (is_win) {
       deps += [ "//components/browser_watcher:unit_tests" ]
     }
   }
+
+  repack("components_tests_pak") {
+    sources = [
+      "$root_gen_dir/components/components_resources.pak",
+      "$root_gen_dir/components/strings/components_strings_en-US.pak",
+      "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
+      "$root_gen_dir/ui/resources/webui_resources.pak",
+      "$root_gen_dir/ui/strings/app_locale_settings_en-US.pak",
+      "$root_gen_dir/ui/strings/ui_strings_en-US.pak",
+    ]
+
+    output = "$root_out_dir/components_tests_resources.pak"
+
+    deps = [
+      "//components/resources",
+      "//components/strings",
+      "//ui/resources",
+      "//ui/strings",
+    ]
+  }
 }