Merge "Make resize veil background adapt to theme." into udc-dev am: 2ce7451a am: f9aebe2b

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



Change-Id: Ibe096f6189d57952704f56d686d2eb740c7904b6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>