Change screensaver ctrlr to base pref ctrlr. am: 542644e83f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/20736682

Change-Id: Ic6f282087660ede4a0b1fd38378c0c5adc58bc3f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>