tree ae8c9c87aaa41af3544e0974005bdb44fb47809d
parent 5be2c0228264a89653afcad921edcb6f127d9a48
author Nelly Vouzoukidou <nellyv@google.com> 1539693750 +0200
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1540218218 +0000

[ledger] Add LevelDbFactory.

Test: Existing tests still pass

LE-617 #comment Introduce a factory for LevelDb instances.

A single LevelDbFactory is created per LedgerRepositoryFactoryImpl
and all necessary new LevelDb objects (used in PageStorage) are
created through that factory.

For now, methods of LevelDbFactory simply return  new uninitialized
objects. In upcoming CLs an initialized Db instance will be pre-cached
and returned directly when available.

Change-Id: If57c9783d41685c402c42529a63736150158a4bc