Merge "Allow starting activity for result on another TaskFragment" into tm-qpr-dev am: c1108902

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20554413



Change-Id: I9b3162c692096659c9489c5b3bff1f4e2c0133c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>