Merge "Log the cached app high watermark" into udc-dev am: 4eb6f77e am: b2e3c713

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22500512



Change-Id: Ie82a3258606701178e15623881c4c543e73db9f2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>