Merge "Enable background resource cache trim when device goes idle" into...

Merge "Enable background resource cache trim when device goes idle" into udc-dev am: 932879c9 am: 9479ad41 am: 30da95d9 am: 6462feaf

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23451202



Change-Id: I23f2fd86486b99cfa4b8a07126beeb20059da9aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>