Merge "Sharesheet: action bar is independent of WP tabs, should always launch as primary user." into sc-dev am: 9197f7b260 am: ac0fe8d049

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15363687

Change-Id: I6f828ffbf403884eb1f24778bccbd7a6ab5bdb59