[Sync] Convert syncable/ directory to ModelEnumSet

chrome/browser/sync/syncable/directory_backing_store.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/sync/syncable/directory_backing_store.h"
 
 #include "build/build_config.h"
 
 #include <limits>
 
@@ skipping 376 matching lines @@
     for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
       sqlite_utils::SQLStatement op;
       op.prepare(dbhandle, "INSERT OR REPLACE INTO models (model_id, "
       "progress_marker, initial_sync_ended) VALUES ( ?, ?, ?)");
       // We persist not ModelType but rather a protobuf-derived ID.
       string model_id = ModelTypeEnumToModelId(ModelTypeFromInt(i));
       string progress_marker;
       info.download_progress[i].SerializeToString(&progress_marker);
       op.bind_blob(0, model_id.data(), model_id.length());
       op.bind_blob(1, progress_marker.data(), progress_marker.length());
-      op.bind_bool(2, info.initial_sync_ended[i]);
+      op.bind_bool(2, info.initial_sync_ended.Has(ModelTypeFromInt(i)));
 
       if (!(SQLITE_DONE == op.step() &&
             SQLITE_OK == op.reset() &&
             1 == op.changes())) {
         return false;
       }
     }
   }
 
   return (SQLITE_OK == transaction.Commit());
@@ skipping 199 matching lines @@
     sqlite_utils::SQLStatement query;
     query.prepare(load_dbhandle_,
         "SELECT model_id, progress_marker, initial_sync_ended "
         "FROM models");
     while (SQLITE_ROW == query.step()) {
       ModelType type = ModelIdToModelTypeEnum(query.column_blob(0),
                                               query.column_bytes(0));
       if (type != UNSPECIFIED && type != TOP_LEVEL_FOLDER) {
         info->kernel_info.download_progress[type].ParseFromArray(
             query.column_blob(1), query.column_bytes(1));
-        info->kernel_info.initial_sync_ended[type] = query.column_bool(2);
+        if (query.column_bool(2)) {
+          info->kernel_info.initial_sync_ended.Put(type);
+        }
       }
     }
   }
   {
     sqlite_utils::SQLStatement query;
     query.prepare(load_dbhandle_,
                   "SELECT MAX(metahandle) FROM metas");
     if (SQLITE_ROW != query.step())
       return false;
     info->max_metahandle = query.column_int64(0);
@@ skipping 627 matching lines @@
       "id TEXT primary key, "
       "name TEXT, "
       "store_birthday TEXT, "
       "db_create_version TEXT, "
       "db_create_time INT, "
       "next_id INT default -2, "
       "cache_guid TEXT )");
   return ExecQuery(load_dbhandle_, query.c_str());
 }
 }  // namespace syncable