tree 2fe705487b9f6034e719b5d542ce56f65756803f
parent 8108251a87831ee7c0afd6d62e0e7a3083dedd98
author JW Wang <wangchun@google.com> 1577779111 +0800
committer JW Wang <wangchun@google.com> 1578033099 +0800

Use PackageRollbackInfo#getVersionRolledBackFrom to simplify code (2/n)

PackageRollbackInfo#getVersionRolledBackFrom returns a VersionedPackage
which contains a version code. No need to query the version code from
the package manager.

Bug: 147028082
Test: atest StagedRollbackTest
Change-Id: I769e726183ee99bb9e8c7576bb8b6c21a75fe2ff