Merge "Allow dreams to redraw when device is rotated." into tm-qpr-dev am: 63af7acedd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19641216

Change-Id: Ifaca98114d7dac91a48a6d9fb00dde78b0173248
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>