[Sync] Add ModelTypeStore implementation.

sync/sync.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     # Setting these two variables allows other targets to use the
     # sync_proto_sources variable as the list of sync protocol buffer files.
     'sync_proto_sources_dir': 'protocol',
@@ skipping 200 matching lines @@
         'internal_api/events/protocol_event.cc',
         'internal_api/http_bridge.cc',
         'internal_api/http_bridge_network_resources.cc',
         'internal_api/internal_components_factory_impl.cc',
         'internal_api/js_mutation_event_observer.cc',
         'internal_api/js_mutation_event_observer.h',
         'internal_api/js_sync_encryption_handler_observer.cc',
         'internal_api/js_sync_encryption_handler_observer.h',
         'internal_api/js_sync_manager_observer.cc',
         'internal_api/js_sync_manager_observer.h',
+        'internal_api/model_type_store_backend.cc',
+        'internal_api/model_type_store_impl.cc',
         'internal_api/protocol_event_buffer.cc',
         'internal_api/protocol_event_buffer.h',
         'internal_api/public/activation_context.h',
         'internal_api/public/attachments/attachment_downloader.h',
         'internal_api/public/attachments/attachment_downloader_impl.h',
         'internal_api/public/attachments/attachment_service.h',
         'internal_api/public/attachments/attachment_service_impl.h',
         'internal_api/public/attachments/attachment_service_proxy.h',
         'internal_api/public/attachments/attachment_service_proxy_for_test.h',
         'internal_api/public/attachments/attachment_store_frontend.h',
@@ skipping 51 matching lines @@
         'internal_api/public/events/poll_get_updates_request_event.h',
         'internal_api/public/events/protocol_event.h',
         'internal_api/public/http_bridge.h',
         'internal_api/public/http_bridge_network_resources.h',
         'internal_api/public/http_post_provider_factory.h',
         'internal_api/public/http_post_provider_interface.h',
         'internal_api/public/internal_components_factory.h',
         'internal_api/public/internal_components_factory_impl.h',
         'internal_api/public/model_type_processor.cc',
         'internal_api/public/model_type_processor.h',
+        'internal_api/public/model_type_store_backend.h',
+        'internal_api/public/model_type_store_impl.h',
         'internal_api/public/network_resources.h',
         'internal_api/public/non_blocking_sync_common.cc',
         'internal_api/public/non_blocking_sync_common.h',
         'internal_api/public/read_node.h',
         'internal_api/public/read_transaction.h',
         'internal_api/public/sessions/commit_counters.cc',
         'internal_api/public/sessions/commit_counters.h',
         'internal_api/public/sessions/model_neutral_state.cc',
         'internal_api/public/sessions/model_neutral_state.h',
         'internal_api/public/sessions/status_counters.cc',
@@ skipping 248 matching lines @@
       },
       'includes': [
         '../build/protoc.gypi'
       ],
       'defines': [
         'SYNC_IMPLEMENTATION'
       ],
     },
   ],
 }