tree 457da4096d4db667a02fed4f18a0be1da2c18a2c
parent 265e3da00668a0769be331349541050dd6603c2b
author Craig Mautner <cmautner@google.com> 1414009282 -0700
committer Craig Mautner <cmautner@google.com> 1414009720 -0700

Cherry pick task movement changes from aosp

The following cherry picks from aosp contain code that keep windows
tracking the task movement.

https://android-review.googlesource.com/#/c/111380/
https://android-review.googlesource.com/#/c/109930

Maybe fixes bug 15729183.

Change-Id: Ida69fe365b06025d119e32b22a8d04958cdbabf3