[automerger skipped] Revert "On device lockdown, always show the keyguard" am:...

[automerger skipped] Revert "On device lockdown, always show the keyguard" am: 996896e6 -s ours am: 12913fd3 -s ours am: 727968f0 -s ours am: f4b8f6ad -s ours am: 3e6f7a7f -s ours

am skip reason: Merged-In I9a7c5e1acadabd4484e58573331f98dba895f2a2 with SHA-1 b23c2d5f is already in history. Merged-In was found from reverted change.

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24757286



Change-Id: I45896be0c2d108e6b80727c13326bb8ec992124b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>