Merge "Fix NPE on TaskFragment" into udc-dev am: b703d3e777 am: a282510ace

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23486839

Change-Id: Idf50a72a7188abc0a4688c2a52ddc521254e250c
Signed-off-by: Automerger Merge Worker <[email protected]>