gfxinfo: No use for YouTube in recent android

Created by: joelagnel

YouTube workload in LISA uses gfxinfo for framestats. Since recent versions of Android, gfxinfo no longer carries useful information about YouTube's frames. Video data goes through different path, only UI toolkit rendering like that done by Jankbench and UIBench have gfxinfo's statistics. This issue is to find a better way to measure YouTube's performance in LISA.