OriginOperationBase and the derived classes currently must get QuotaManager by
calling QuotaManager::Get() and usually asserting that the returned value is
not null. Now when OriginOperationBase is created and destroyed only on the
PBackground thread, a new not null strong reference to QuotaManager can be
added to OriginOperationBase which will eliminate the need for calling
QuotaManager::Get. Calling QuotaManager::Get less is desired because such a
call can get more expensive in future.
Changes done in this patch:
- added not null strong reference to QuotaManager from OriginOperationBase
- adjusted constructors of derived classes
- adjusted factories for origin operations
- started using the new member in some places (instead of calling QuotaManager::Get)
- removed some now unnecessary QuotaManager::Get calls
Differential Revision: https://phabricator.services.mozilla.com/D185645
Jan Varga