[Sync] Move DataTypeErrorHandler to //sync.

sync/sync_tests.gypi

 # Copyright 2013 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': [
     # Test support files for the 'sync_core' target.
     # GN version: //sync:test_support_sync_core
     {
       'target_name': 'test_support_sync_core',
@@ skipping 165 matching lines @@
         '../testing/gtest.gyp:gtest',
         'sync',
         'test_support_sync_core',
       ],
       'export_dependent_settings': [
         '../testing/gtest.gyp:gtest',
         'sync',
         'test_support_sync_core',
       ],
       'sources': [
+        'internal_api/public/test/data_type_error_handler_mock.h',
         'internal_api/public/test/fake_model_type_connector.h',
         'internal_api/public/test/fake_model_type_processor.h',
         'internal_api/public/test/fake_sync_manager.h',
         'internal_api/public/test/model_type_store_test_util.h',
         'internal_api/public/test/sync_manager_factory_for_profile_sync_test.h',
         'internal_api/public/test/test_entry_factory.h',
         'internal_api/public/test/test_internal_components_factory.h',
         'internal_api/public/test/test_user_share.h',
+        'internal_api/test/data_type_error_handler_mock.cc',
         'internal_api/test/fake_model_type_connector.cc',
         'internal_api/test/fake_model_type_processor.cc',
         'internal_api/test/fake_sync_manager.cc',
         'internal_api/test/model_type_store_test_util.cc',
         'internal_api/test/sync_manager_factory_for_profile_sync_test.cc',
         'internal_api/test/sync_manager_for_profile_sync_test.cc',
         'internal_api/test/sync_manager_for_profile_sync_test.h',
         'internal_api/test/test_entry_factory.cc',
         'internal_api/test/test_internal_components_factory.cc',
         'internal_api/test/test_user_share.cc',
@@ skipping 334 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'sync_unit_tests.isolate',
           ],
         },
       ],
     }],
   ],
 }