Defined in fuchsia.hardware.goldfish.control/goldfish-control.banjo
Create a sync fence on goldfish control device. The fence
argument will signal its peer once all the graphics work already queued
on the EGL display context associated with the device when it is created
Returns ZX_ERR_INTERNAL if the device cannot create a fence or cannot
trigger the wait.
Get color buffer for VMO. Fails if VMO is not associated with a color