Merge "Transfer IME target right away if old target was home" into rvc-dev am:...

Merge "Transfer IME target right away if old target was home" into rvc-dev am: 3fdab335 am: 9247fcf1 am: 84c67572

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11992999

Change-Id: I1d91e9d25c87c927fae9ebe3801e3802c3ebc26d