Merge "Add manual enabled battery saver reason (1/4)" into udc-dev am: 047b5680 am: c7104198

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22525825



Change-Id: I33538279f8436e283e0c7da8f1e156428da07636
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>