Merge "ViewRootImpl: Update opaque flag if SurfaceControl changes from relayout" into sc-qpr1-dev am: 8dc8182ad0 am: 9bbf9cd727 am: b866c0323a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15934803

Change-Id: I24fbd39028a3d2bc9da9f19d68017e376409a171