Merge "Define flag for wallpaper preview loading animation (1/3)" into...

Merge "Define flag for wallpaper preview loading animation (1/3)" into udc-qpr-dev am: 930d4147 am: 69484825

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24044246



Change-Id: I744c34cfd864d1f797e8da5ac4285e8524ea2bfb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>