Fix adding a file which didn't exist but had been prefetched before in Chrome
Fix adding a file which didn't exist but had been prefetched before in Chrome

Work around crbug.com/635350

airbornos/airbornos,airbornos/airbornos,joshua-s/airbornos,joshua-s/airbornos,airbornos/airbornos,joshua-s/airbornos