tree b04bf87b47bf8689d29121963b2f751136341d80
parent a892eb154e0b578571674eea5f69fa4fbf7c89da
author Paul Lawrence <paullawrence@google.com> 1542751679 -0800
committer Paul Lawrence <paullawrence@google.com> 1547676888 -0800

Checkpoints: Support validation and roll forward on fail

Test: Rolls backward, and if you hexedit a BOW page, rolls forward
Change-Id: If99a6c3a3bc3f615bd1445f5af14ea490a58e053