Forward input windows from SurfaceFlinger to InputDispatcher.

We re-use values from visible region computation to fill in
the frames, ensuring input always reflects the most recent
state of the scene.

Test: Extensive manual testing. Existing tests pass.
Bug: 80101428
Bug: 113136004
Bug: 111440400
Change-Id: I9908a1bd6cba6abf16f2f6a43b6fe63f07a124a6