[Sync] Refactor sync manager into interface.

sync/sync.gyp

 # Copyright (c) 2012 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,
   },
   'targets': [
     # The core sync library.
@@ skipping 37 matching lines @@
         'internal_api/public/sessions/model_neutral_state.cc',
         'internal_api/public/sessions/model_neutral_state.h',
         'internal_api/public/sessions/sync_session_snapshot.cc',
         'internal_api/public/sessions/sync_session_snapshot.h',
         'internal_api/public/sessions/sync_source_info.cc',
         'internal_api/public/sessions/sync_source_info.h',
         'internal_api/public/util/experiments.h',
         'internal_api/public/util/immutable.h',
         'internal_api/public/util/syncer_error.cc',
         'internal_api/public/util/syncer_error.h',
+        'internal_api/public/util/sync_string_conversions.cc',
+        'internal_api/public/util/sync_string_conversions.h',
         'internal_api/public/util/report_unrecoverable_error_function.h',
         'internal_api/public/util/unrecoverable_error_handler.h',
         'internal_api/public/util/unrecoverable_error_info.h',
         'internal_api/public/util/unrecoverable_error_info.cc',
         'internal_api/public/util/weak_handle.cc',
         'internal_api/public/util/weak_handle.h',
         'engine/all_status.cc',
         'engine/all_status.h',
         'engine/apply_updates_command.cc',
         'engine/apply_updates_command.h',
@@ skipping 227 matching lines @@
         'internal_api/public/base_node.h',
         'internal_api/public/base_transaction.h',
         'internal_api/public/change_record.h',
         'internal_api/public/configure_reason.h',
         'internal_api/public/http_bridge.h',
         'internal_api/public/http_post_provider_factory.h',
         'internal_api/public/http_post_provider_interface.h',
         'internal_api/public/read_node.h',
         'internal_api/public/read_transaction.h',
         'internal_api/public/sync_manager.h',
+        'internal_api/public/sync_manager.cc',
+        'internal_api/public/sync_manager_factory.h',
         'internal_api/public/user_share.h',
         'internal_api/public/write_node.h',
         'internal_api/public/write_transaction.h',
         'internal_api/base_node.cc',
         'internal_api/base_transaction.cc',
         'internal_api/change_record.cc',
         'internal_api/change_reorder_buffer.cc',
         'internal_api/change_reorder_buffer.h',
         'internal_api/debug_info_event_listener.cc',
         'internal_api/debug_info_event_listener.h',
         'internal_api/http_bridge.cc',
         'internal_api/js_mutation_event_observer.cc',
         'internal_api/js_mutation_event_observer.h',
         'internal_api/js_sync_manager_observer.cc',
         'internal_api/js_sync_manager_observer.h',
         'internal_api/read_node.cc',
         'internal_api/read_transaction.cc',
         'internal_api/syncapi_internal.cc',
         'internal_api/syncapi_internal.h',
         'internal_api/syncapi_server_connection_manager.cc',
         'internal_api/syncapi_server_connection_manager.h',
-        'internal_api/sync_manager.cc',
+        'internal_api/sync_manager_factory.cc',
+        'internal_api/sync_manager_impl.cc',
+        'internal_api/sync_manager_impl.h',
         'internal_api/user_share.cc',
         'internal_api/write_node.cc',
         'internal_api/write_transaction.cc',
       ],
     },
 
     # The sync external API library.
     {
       'target_name': 'syncapi_service',
       'type': 'static_library',
@@ skipping 470 matching lines @@
             'test_suite_name': 'sync_unit_tests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)sync_unit_tests<(SHARED_LIB_SUFFIX)',
             'input_jars_paths': [ '<(PRODUCT_DIR)/lib.java/chromium_base.jar', ],
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }