Fix variable names in xfermodes2 gm test
Fix variable names in xfermodes2 gm test

BUG=skia:

Review URL: https://codereview.chromium.org/1041913002

OneRom/external_skia,nvoron23/skia,TeamExodus/external_skia,google/skia,Hikari-no-Tenshi/android_external_skia,geekboxzone/mmallow_external_skia,aosp-mirror/platform_external_skia,google/skia,w3nd1go/android_external_skia,TeamTwisted/external_skia,noselhq/skia,HalCanary/skia-hc,ominux/skia,MarshedOut/android_external_skia,nfxosp/platform_external_skia,Infinitive-OS/platform_external_skia,Jichao/skia,MonkeyZZZZ/platform_external_skia,TeamTwisted/external_skia,amyvmiwei/skia,Hikari-no-Tenshi/android_external_skia,MonkeyZZZZ/platform_external_skia,geekboxzone/mmallow_external_skia,MonkeyZZZZ/platform_external_skia,HalCanary/skia-hc,google/skia,aosp-mirror/platform_external_skia,UBERMALLOW/external_skia,aosp-mirror/platform_external_skia,OneRom/external_skia,MinimalOS-AOSP/platform_external_skia,VRToxin-AOSP/android_external_skia,Jichao/skia,rubenvb/skia,UBERMALLOW/external_skia,YUPlayGodDev/platform_external_skia,boulzordev/android_external_skia,AOSPB/external_skia,BrokenROM/external_skia,invisiblek/android_external_skia,VRToxin-AOSP/android_external_skia,w3nd1go/android_external_skia,rubenvb/skia,nvoron23/skia,pcwalton/skia,AOSP-YU/platform_external_skia,noselhq/skia,spezi77/android_external_skia,vanish87/skia,Hikari-no-Tenshi/android_external_skia,nfxosp/platform_external_skia,BrokenROM/external_skia,todotodoo/skia,ominux/skia,UBERMALLOW/external_skia,shahrzadmn/skia,TeamTwisted/external_skia,google/skia,nvoron23/skia,BrokenROM/external_skia,TeamExodus/external_skia,rubenvb/skia,pcwalton/skia,invisiblek/android_external_skia,google/skia,MinimalOS-AOSP/platform_external_skia,BrokenROM/external_skia,tmpvar/skia.cc,todotodoo/skia,TeamTwisted/external_skia,aosp-mirror/platform_external_skia,vanish87/skia,PAC-ROM/android_external_skia,MonkeyZZZZ/platform_external_skia,Jichao/skia,ominux/skia,MonkeyZZZZ/platform_external_skia,w3nd1go/android_external_skia,todotodoo/skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,TeamTwisted/external_skia,noselhq/skia,YUPlayGodDev/platform_external_skia,MarshedOut/android_external_skia,TeamTwisted/external_skia,HalCanary/skia-hc,spezi77/android_external_skia,nfxosp/platform_external_skia,nfxosp/platform_external_skia,Infinitive-OS/platform_external_skia,BrokenROM/external_skia,w3nd1go/android_external_skia,YUPlayGodDev/platform_external_skia,YUPlayGodDev/platform_external_skia,noselhq/skia,nvoron23/skia,google/skia,PAC-ROM/android_external_skia,w3nd1go/android_external_skia,VRToxin-AOSP/android_external_skia,tmpvar/skia.cc,MarshedOut/android_external_skia,w3nd1go/android_external_skia,tmpvar/skia.cc,pcwalton/skia,MonkeyZZZZ/platform_external_skia,MarshedOut/android_external_skia,aosp-mirror/platform_external_skia,PAC-ROM/android_external_skia,AOSP-YU/platform_external_skia,AOSPB/external_skia,geekboxzone/mmallow_external_skia,TeamExodus/external_skia,MinimalOS-AOSP/platform_external_skia,YUPlayGodDev/platform_external_skia,invisiblek/android_external_skia,aosp-mirror/platform_external_skia,OneRom/external_skia,MonkeyZZZZ/platform_external_skia,spezi77/android_external_skia,w3nd1go/android_external_skia,Jichao/skia,noselhq/skia,ominux/skia,UBERMALLOW/external_skia,YUPlayGodDev/platform_external_skia,boulzordev/android_external_skia,UBERMALLOW/external_skia,HalCanary/skia-hc,boulzordev/android_external_skia,timduru/platform-external-skia,timduru/platform-external-skia,noselhq/skia,nfxosp/platform_external_skia,todotodoo/skia,w3nd1go/android_external_skia,amyvmiwei/skia,pcwalton/skia,geekboxzone/mmallow_external_skia,rubenvb/skia,Jichao/skia,pcwalton/skia,tmpvar/skia.cc,PAC-ROM/android_external_skia,AOSPB/external_skia,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,Jichao/skia,qrealka/skia-hc,nfxosp/platform_external_skia,vanish87/skia,VRToxin-AOSP/android_external_skia,OneRom/external_skia,AOSPB/external_skia,nvoron23/skia,rubenvb/skia,spezi77/android_external_skia,HalCanary/skia-hc,ominux/skia,geekboxzone/mmallow_external_skia,TeamExodus/external_skia,AOSP-YU/platform_external_skia,rubenvb/skia,amyvmiwei/skia,aosp-mirror/platform_external_skia,invisiblek/android_external_skia,PAC-ROM/android_external_skia,MinimalOS-AOSP/platform_external_skia,spezi77/android_external_skia,shahrzadmn/skia,vanish87/skia,amyvmiwei/skia,google/skia,pcwalton/skia,shahrzadmn/skia,nfxosp/platform_external_skia,BrokenROM/external_skia,MinimalOS-AOSP/platform_external_skia,timduru/platform-external-skia,shahrzadmn/skia,qrealka/skia-hc,AOSP-YU/platform_external_skia,TeamExodus/external_skia,TeamExodus/external_skia,AOSPB/external_skia,nvoron23/skia,TeamExodus/external_skia,AOSPB/external_skia,MinimalOS-AOSP/platform_external_skia,HalCanary/skia-hc,nvoron23/skia,UBERMALLOW/external_skia,shahrzadmn/skia,tmpvar/skia.cc,TeamTwisted/external_skia,OneRom/external_skia,BrokenROM/external_skia,MarshedOut/android_external_skia,vanish87/skia,VRToxin-AOSP/android_external_skia,geekboxzone/mmallow_external_skia,MarshedOut/android_external_skia,Jichao/skia,BrokenROM/external_skia,shahrzadmn/skia,nvoron23/skia,MinimalOS-AOSP/platform_external_skia,noselhq/skia,pcwalton/skia,VRToxin-AOSP/android_external_skia,Infinitive-OS/platform_external_skia,Hikari-no-Tenshi/android_external_skia,OneRom/external_skia,qrealka/skia-hc,vanish87/skia,boulzordev/android_external_skia,vanish87/skia,YUPlayGodDev/platform_external_skia,nfxosp/platform_external_skia,pcwalton/skia,spezi77/android_external_skia,todotodoo/skia,invisiblek/android_external_skia,boulzordev/android_external_skia,YUPlayGodDev/platform_external_skia,TeamTwisted/external_skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,Infinitive-OS/platform_external_skia,invisiblek/android_external_skia,amyvmiwei/skia,todotodoo/skia,shahrzadmn/skia,pcwalton/skia,VRToxin-AOSP/android_external_skia,OneRom/external_skia,VRToxin-AOSP/android_external_skia,noselhq/skia,qrealka/skia-hc,ominux/skia,tmpvar/skia.cc,timduru/platform-external-skia,amyvmiwei/skia,timduru/platform-external-skia,qrealka/skia-hc,PAC-ROM/android_external_skia,TeamExodus/external_skia,amyvmiwei/skia,todotodoo/skia,Jichao/skia,MarshedOut/android_external_skia,w3nd1go/android_external_skia,Jichao/skia,PAC-ROM/android_external_skia,AOSPB/external_skia,noselhq/skia,MonkeyZZZZ/platform_external_skia,Infinitive-OS/platform_external_skia,UBERMALLOW/external_skia,AOSPB/external_skia,shahrzadmn/skia,boulzordev/android_external_skia,rubenvb/skia,UBERMALLOW/external_skia,MarshedOut/android_external_skia,tmpvar/skia.cc,boulzordev/android_external_skia,qrealka/skia-hc,tmpvar/skia.cc,invisiblek/android_external_skia,UBERMALLOW/external_skia,TeamExodus/external_skia,todotodoo/skia,qrealka/skia-hc,timduru/platform-external-skia,vanish87/skia,Infinitive-OS/platform_external_skia,Infinitive-OS/platform_external_skia,boulzordev/android_external_skia,geekboxzone/mmallow_external_skia,google/skia,google/skia,OneRom/external_skia,qrealka/skia-hc,AOSPB/external_skia,HalCanary/skia-hc,nvoron23/skia,Infinitive-OS/platform_external_skia,AOSP-YU/platform_external_skia,AOSP-YU/platform_external_skia,AOSP-YU/platform_external_skia,aosp-mirror/platform_external_skia,geekboxzone/mmallow_external_skia,YUPlayGodDev/platform_external_skia,VRToxin-AOSP/android_external_skia,OneRom/external_skia,geekboxzone/mmallow_external_skia,shahrzadmn/skia,amyvmiwei/skia,MinimalOS-AOSP/platform_external_skia,AOSP-YU/platform_external_skia,HalCanary/skia-hc,TeamTwisted/external_skia,ominux/skia,Hikari-no-Tenshi/android_external_skia,AOSP-YU/platform_external_skia,aosp-mirror/platform_external_skia,nfxosp/platform_external_skia,Infinitive-OS/platform_external_skia,invisiblek/android_external_skia,MarshedOut/android_external_skia,MonkeyZZZZ/platform_external_skia,google/skia,rubenvb/skia,PAC-ROM/android_external_skia,MinimalOS-AOSP/platform_external_skia,todotodoo/skia,vanish87/skia,ominux/skia,aosp-mirror/platform_external_skia,boulzordev/android_external_skia,PAC-ROM/android_external_skia,timduru/platform-external-skia,ominux/skia