Merge "Dispatch taskInfoChanged after the app transition is finished." into sc-v2-dev am: 763d7172c0 am: a035c1da9f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15718294

Change-Id: Ib01c574d59953297c5c53a605767cd4f716fe2cc