Merge "Make resize veil background adapt to theme." into udc-dev am: 2ce7451a am: d6e35103

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22912989



Change-Id: I298ef4752ef4a7d2488a7008399a61ce119a390a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>