Parcel/Unparcel displaysize in InputWindowInfo

Somehow left this out causing compatraw to not work.

Also converted some float displaySize to int to match the
rest of displaySize uses.

Bug: 179274888
Test: atest libinput_tests:InputWindowInfo
Change-Id: I194f562e448d67d6fd8a04b86376e54c13933ae5
6 files changed