[automerger skipped] Merge "WM: Track focus changes in...

[automerger skipped] Merge "WM: Track focus changes in AccessibilityController" into sc-v2-dev am: d54349db am: 53f5d884 -s ours

am skip reason: Merged-In I21a6f1a7353844d2b0f59f32e802ed1f0a3d66ff with SHA-1 e89c25f9 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15640923

Change-Id: Ie7cd6551d15dc934420559a05fe8c471a5b7031d