Use layer mirroring for shell screenrecord

Instead of using layerStack for mirroring, using the new APIs that
create a mirror layer hierarchy. This is to ensure we can have a 1:1
mapping of display to layer stack in SurfaceFlinger.

Test: adb shell screenrecord
Bug: 237664947
Change-Id: I4f43d6b728dd6e0032c64a3cb8e8ff0e2dd9de38
1 file changed