Add more components_unittests to GN build

components/sync_driver/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")
 
 source_set("sync_driver") {
   sources = [
     "backend_data_type_configurer.cc",
     "backend_data_type_configurer.h",
@@ skipping 149 matching lines @@
     "data_type_manager_impl_unittest.cc",
     "device_info_data_type_controller_unittest.cc",
     "device_info_sync_service_unittest.cc",
     "generic_change_processor_unittest.cc",
     "model_association_manager_unittest.cc",
     "non_blocking_data_type_controller_unittest.cc",
     "non_ui_data_type_controller_unittest.cc",
     "shared_change_processor_unittest.cc",
     "sync_policy_handler_unittest.cc",
     "sync_prefs_unittest.cc",
+    "sync_stopped_reporter_unittest.cc",
     "system_encryptor_unittest.cc",
     "tab_node_pool_unittest.cc",
     "ui_data_type_controller_unittest.cc",
   ]
   deps = [
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }