tree fe7534c8c8d0a32da17c5d8742c922647c762ad4
parent 7fcc730e8d5fc00d0945783e6a649997432b9c1c
author JW Wang <wangchun@google.com> 1581406639 +0800
committer JW Wang <wangchun@google.com> 1581563588 +0800

Let completeEnableRollback return a boolean (1/n)

Now #completeEnableRollback returns a boolean to indicate whether the
rollback object is successfully enable-completed or not.

Bug: 149258640
Test: atest RollbackTest StagedRollbackTest
Change-Id: Ib9803b4f6b12b3c31ea9a2d058f8be33150f0d51