Merge "Animate height of tracked hun during shade transition." into sc-dev am:...

Merge "Animate height of tracked hun during shade transition." into sc-dev am: 7e4b3fda am: 02c83b2d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15146248

Change-Id: I2b4702653b9ba2a4612d48e8f3b6c40cfb9dff11