Merge "Add ownership for BackgroundActivityStartController" into tm-qpr-dev

Bug: 236234252
Test: atest ActivityStarterTests
Ignore-AOSP-First: Internal merge conflict, AOSP change in aosp/2169485
Change-Id: I6ee0e839a4000c9e27630c2e654d945bf45b21e6
Merged-In: I6ee0e839a4000c9e27630c2e654d945bf45b21e6
7 files changed