Fix the build dependency of ProfileSyncService on sync.pb.h

components/sync_driver.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/sync_driver
       'target_name': 'sync_driver',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../net/net.gyp:net',
         '../sync/sync.gyp:sync',
         '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation',
         '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation_proto_cpp',
         'data_use_measurement_core',
         'invalidation_public',
         'metrics',
         'os_crypt',
         'signin_core_browser',
         'version_info',
       ],
       'export_dependent_settings': [
+        '../sync/sync.gyp:sync',
         '../third_party/cacheinvalidation/cacheinvalidation.gyp:cacheinvalidation',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: file list duplicated in GN build.
         'sync_driver/about_sync_util.cc',
         'sync_driver/about_sync_util.h',
         'sync_driver/backend_data_type_configurer.cc',
@@ skipping 165 matching lines @@
         'sync_driver/model_associator_mock.cc',
         'sync_driver/model_associator_mock.h',
         'sync_driver/non_ui_data_type_controller_mock.cc',
         'sync_driver/non_ui_data_type_controller_mock.h',
         'sync_driver/sync_api_component_factory_mock.cc',
         'sync_driver/sync_api_component_factory_mock.h',
       ],
     },
   ],
 }