Emit png_data for invalid favicon_url of import from HTML
Emit png_data for invalid favicon_url of import from HTML

Auditors: 47e4a4954d6a66edd1210b9b46e0a144c1078e87@bbondy

posix4e/electron,brave/muon,brave/muon,posix4e/electron,brave/muon,brave/muon,posix4e/electron,brave/electron,posix4e/electron,brave/muon,brave/electron,brave/muon,brave/electron,posix4e/electron,posix4e/electron,brave/electron,brave/electron,brave/electron