commit 8bbb815a7515232e59b719a0941b64828367c8de
author Nikita Ioffe <ioffe@google.com> Thu Feb 21 15:54:54 2019 +0000
committer Nikita Ioffe <ioffe@google.com> Wed Feb 27 15:19:44 2019 +0000
tree 8b5437db39ca272e09d76e0fd296cec33ecc8749
parent 750c23d5415c3d012edf2bf91a49098de691091c

Don't allow downgrade of apexes unless INSTALL_ALLOW_DOWNGRADE is set

Extracted check on whenever downgrades are allowed to
PackageManagerServiceUtils# isDowngradePermitteisDowngradePermitted
method to share it between PackageManagerService and StagingManager.

E2E test will happen in a follow-up CL. Need to refactor
ApexE2EBaseHostTest a bit before.

Bug: 124859257
Test: manually tried to downgrade using adb install with and without -d
Change-Id: Iaf0110965a4e7a82ae07f708368807aaac8cc4ec