Merge "Merge "Call preserveSurfaces when detaching children." into rvc-dev am: 5b72ddd8ed am: 0be99525af am: ef62ca2f62" into rvc-qpr-dev-plus-aosp am: 574f2c92b6
Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11712621 Change-Id: I607c51b6d532b7a342347b15332737a98a48860b
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