Merge "Support shell rotation transition on general window container" into...

Merge "Support shell rotation transition on general window container" into tm-qpr-dev am: b27282ac am: f5e71fb8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19498810



Change-Id: Ie34548418b1289f20cea22e808cd936221beabec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>