Merge "Set the candidate task windowing mode" into tm-dev am: 8b830691 am: 0e0b639d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17753206



Change-Id: I136ebeb5f866ee79f03cf5a6d350147c368c6c2f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>