Add //ios/chrome/app/resources group target.

ios/chrome/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("//ios/build/config.gni")
+import("//ios/public/provider/chrome/browser/build_config.gni")
 import("//testing/test.gni")
 
 test("ios_chrome_unittests") {
   deps = [
-    # Ensure that all unit tests are run.
+    # Ensure that all unit tests are run and packed resources available.
     "//ios/chrome/test:run_all_unittests",
+    ios_packed_resources_target,
 
     # Add unit_tests target here.
     "//ios/chrome/app:unit_tests",
     "//ios/chrome/app/application_delegate:unit_tests",
     "//ios/chrome/browser:unit_tests",
     "//ios/chrome/browser/browsing_data:unit_tests",
     "//ios/chrome/browser/device_sharing:unit_tests",
     "//ios/chrome/browser/favicon:unit_tests",
     "//ios/chrome/browser/geolocation:unit_tests",
     "//ios/chrome/browser/itunes_links:unit_tests",
@@ skipping 21 matching lines @@
     "//ios/chrome/browser/voice:unit_tests",
     "//ios/chrome/browser/web_resource:unit_tests",
     "//ios/chrome/common:unit_tests",
     "//ios/chrome/test:unit_tests",
     "//ios/chrome/test/base:unit_tests",
     "//ios/web/public/image_fetcher:unit_tests",
   ]
 
   assert_no_deps = ios_assert_no_deps
 }