lossless: 0.06 % compression density improvement
lossless: 0.06 % compression density improvement

Change-Id: Ib662e6aec53b40d6bc736d3ecfd6475bb005c790

imazen/libwebp,PKRoma/libwebp,imazen/libwebp,rxl194/libwebp,ttyangf/libwebp,redengineer/libwebp,ttyangf/libwebp,yohunl/libwebp,webmproject/libwebp,zofuthan/libwebp,yohunl/libwebp,redengineer/libwebp,yohunl/libwebp,webmproject/libwebp,PKRoma/libwebp,Aexyn/libwebp,redengineer/libwebp,ya7lelkom/libwebp,imazen/libwebp,redengineer/libwebp,webmproject/libwebp,yohunl/libwebp,PKRoma/libwebp,ttyangf/libwebp,zofuthan/libwebp,imazen/libwebp,rxl194/libwebp,yohunl/libwebp,ttyangf/libwebp,ya7lelkom/libwebp,rxl194/libwebp,zofuthan/libwebp,zofuthan/libwebp,ya7lelkom/libwebp,Aexyn/libwebp,Aexyn/libwebp,PKRoma/libwebp,redengineer/libwebp,imazen/libwebp,webmproject/libwebp,Aexyn/libwebp,ya7lelkom/libwebp,Aexyn/libwebp,PKRoma/libwebp,webmproject/libwebp,ttyangf/libwebp,rxl194/libwebp,zofuthan/libwebp,ya7lelkom/libwebp,PKRoma/libwebp,rxl194/libwebp