Compute screen layout for compat size app

Instead of fixing screen layout manually, it should be
able to update according to current resolved configuration.
That also keeps its other bits of original screen layout.

Fix: 144723538
Test: atest SizeCompatTests#testFixedScreenLayoutSizeBits

Change-Id: Id0e7a067167af2bb4b0257b3845b3cc1b9c64547
3 files changed