Fix frame_callback to do the right thing.
Fix frame_callback to do the right thing.

nemomobile/ti-omap3-sgx-wayland-wsegl,nemomobile/ti-omap3-sgx-wayland-wsegl,locusf/ti-omap3-sgx-wayland-wsegl,locusf/ti-omap3-sgx-wayland-wsegl