Initial UniquePositions implementation

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 292 matching lines @@
         'internal_api/debug_info_event_listener.cc',
         'internal_api/debug_info_event_listener.h',
         'internal_api/http_bridge.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/public/base_node.h',
-        'internal_api/public/base_transaction.h',
         'internal_api/public/base/enum_set.h',
         'internal_api/public/base/invalidation.cc',
         'internal_api/public/base/invalidation.h',
+        'internal_api/public/base/model_type.h',
         'internal_api/public/base/model_type_invalidation_map.cc',
         'internal_api/public/base/model_type_invalidation_map.h',
-        'internal_api/public/base/model_type.h',
         'internal_api/public/base/node_ordinal.cc',
         'internal_api/public/base/node_ordinal.h',
         'internal_api/public/base/ordinal.h',
         'internal_api/public/base/progress_marker_map.cc',
         'internal_api/public/base/progress_marker_map.h',
+        'internal_api/public/base/unique_position.cc',
+        'internal_api/public/base/unique_position.h',
+        '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/data_type_association_stats.cc',
         'internal_api/public/data_type_association_stats.h',
         'internal_api/public/data_type_debug_info_listener.h',
         'internal_api/public/engine/model_safe_worker.cc',
         'internal_api/public/engine/model_safe_worker.h',
         'internal_api/public/engine/passive_model_worker.cc',
         'internal_api/public/engine/passive_model_worker.h',
         'internal_api/public/engine/polling_constants.cc',
@@ skipping 311 matching lines @@
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
         ],
         'sources': [
           'internal_api/public/base/enum_set_unittest.cc',
           'internal_api/public/base/model_type_invalidation_map_unittest.cc',
           'internal_api/public/base/node_ordinal_unittest.cc',
           'internal_api/public/base/ordinal_unittest.cc',
+          'internal_api/public/base/unique_position_unittest.cc',
           'internal_api/public/engine/model_safe_worker_unittest.cc',
           'internal_api/public/util/immutable_unittest.cc',
           'internal_api/public/util/weak_handle_unittest.cc',
           'engine/apply_control_data_updates_unittest.cc',
           'engine/apply_updates_and_resolve_conflicts_command_unittest.cc',
           'engine/backoff_delay_provider_unittest.cc',
           'engine/build_commit_command_unittest.cc',
           'engine/download_updates_command_unittest.cc',
           'engine/model_changing_syncer_command_unittest.cc',
           'engine/process_commit_response_command_unittest.cc',
@@ skipping 327 matching lines @@
           'variables': {
             'test_suite_name': 'sync_unit_tests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)sync_unit_tests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }