Merge "Use intra wallaper transition animation for move to front/back...

Merge "Use intra wallaper transition animation for move to front/back transition." into sc-dev am: 398b9a81 am: e54799d1 am: 9ea3dd96

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15302105

Change-Id: Ie68786e71a1d81298624cec710e9e438215ef5d6