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: 2d7a6eb9

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



Change-Id: Ib73f146050c50966b2e8b05bc8c442126b8dfde0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>