tree 66bb61d366634d5f7b668739648e3bf3d55c08f3
parent 420bed506f4baa36eb9b3953df068460e98bc31f
author Yifan Hong <elsk@google.com> 1601071699 -0700
committer Treehugger Robot <treehugger-gerrit@google.com> 1601424767 +0000

CleanupPreviousUpdateAction: refactor and add StopActionInternal

Add a new function, StopActionInternal, that stops the action.

Also refactor and let all public *Action APIs call one of Start or
Stop.

Test: pass
Bug: 169436297

Change-Id: I04877426f87f12755f9e3ba17434a4514941df99