Merge "Make resize veil background adapt to theme." into udc-dev am: 2ce7451a am: 2d59c00d

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



Change-Id: I1c486d541fddc047a5003f942febb04a31125f2a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>