Merge "Make max notification icon values resources instead of hard-coded...

Merge "Make max notification icon values resources instead of hard-coded vals." into udc-dev am: d166b3b8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22252108



Change-Id: If7f51ec39210b21fb4fea3f9ea177c14395c58d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>