Fixed import of PNGReaderTest.
Fixed import of PNGReaderTest.

AlanZatarain/cortex-vfx,tectronics/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,Alwnikrotikz/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx