Merge "libgui: Check slot received from IGBP in Surface" into lmp-dev am: 98e3c06010 am: 970bb51580 am: 78976cea8f am: 2fe15aa6f0 am: cce83f15e5 am: 9a44ee0742 am: 787aa48f41
am: f69675e5c2

Change-Id: Icb1a0aae634951cd903fb2deef632005e01d4d7f