message: Implement SQLiteDatabase::MakeBatch
diff: @@ -262,7 +262,8 @@ void SQLiteDatabase::Close()
  std::unique_ptr<DatabaseBatch> SQLiteDatabase::MakeBatch(bool flush_on_close)
  {
  - return nullptr;
  + // We ignore flush_on_close because we don't do manual flushing for SQLite
  + return MakeUnique<SQLiteBatch>(*this);
  }
  SQLiteBatch::SQLiteBatch(SQLiteDatabase& database)
  