Remove globals from tests/CanvasTest.cpp
Remove globals from tests/CanvasTest.cpp

BUG=skia:

Review URL: https://codereview.chromium.org/617093004

scroggo/skia,tmpvar/skia.cc,nfxosp/platform_external_skia,AOSPB/external_skia,shahrzadmn/skia,scroggo/skia,chenlian2015/skia_from_google,Hikari-no-Tenshi/android_external_skia,boulzordev/android_external_skia,Infinitive-OS/platform_external_skia,YUPlayGodDev/platform_external_skia,invisiblek/android_external_skia,vanish87/skia,PAC-ROM/android_external_skia,TeamExodus/external_skia,geekboxzone/mmallow_external_skia,pcwalton/skia,pcwalton/skia,vanish87/skia,PAC-ROM/android_external_skia,AOSP-YU/platform_external_skia,Igalia/skia,MinimalOS-AOSP/platform_external_skia,jtg-gg/skia,pcwalton/skia,OneRom/external_skia,scroggo/skia,geekboxzone/mmallow_external_skia,scroggo/skia,YUPlayGodDev/platform_external_skia,AOSP-YU/platform_external_skia,AOSP-YU/platform_external_skia,invisiblek/android_external_skia,nfxosp/platform_external_skia,MinimalOS-AOSP/platform_external_skia,MarshedOut/android_external_skia,MonkeyZZZZ/platform_external_skia,UBERMALLOW/external_skia,scroggo/skia,Jichao/skia,shahrzadmn/skia,w3nd1go/android_external_skia,nvoron23/skia,AOSP-YU/platform_external_skia,OneRom/external_skia,ominux/skia,TeamTwisted/external_skia,amyvmiwei/skia,MinimalOS-AOSP/platform_external_skia,nvoron23/skia,shahrzadmn/skia,aosp-mirror/platform_external_skia,Igalia/skia,nvoron23/skia,rubenvb/skia,noselhq/skia,MonkeyZZZZ/platform_external_skia,MinimalOS-AOSP/platform_external_skia,BrokenROM/external_skia,nvoron23/skia,aosp-mirror/platform_external_skia,VRToxin-AOSP/android_external_skia,TeamExodus/external_skia,ominux/skia,samuelig/skia,todotodoo/skia,MarshedOut/android_external_skia,BrokenROM/external_skia,boulzordev/android_external_skia,chenlian2015/skia_from_google,spezi77/android_external_skia,MonkeyZZZZ/platform_external_skia,rubenvb/skia,boulzordev/android_external_skia,timduru/platform-external-skia,HalCanary/skia-hc,MonkeyZZZZ/platform_external_skia,TeamExodus/external_skia,TeamExodus/external_skia,HalCanary/skia-hc,rubenvb/skia,PAC-ROM/android_external_skia,TeamTwisted/external_skia,qrealka/skia-hc,OneRom/external_skia,AOSPB/external_skia,Hikari-no-Tenshi/android_external_skia,boulzordev/android_external_skia,MonkeyZZZZ/platform_external_skia,ominux/skia,VRToxin-AOSP/android_external_skia,UBERMALLOW/external_skia,VRToxin-AOSP/android_external_skia,samuelig/skia,BrokenROM/external_skia,qrealka/skia-hc,geekboxzone/mmallow_external_skia,ominux/skia,MinimalOS-AOSP/platform_external_skia,tmpvar/skia.cc,ominux/skia,YUPlayGodDev/platform_external_skia,timduru/platform-external-skia,Jichao/skia,tmpvar/skia.cc,google/skia,timduru/platform-external-skia,samuelig/skia,TeamTwisted/external_skia,ominux/skia,google/skia,TeamExodus/external_skia,nfxosp/platform_external_skia,MarshedOut/android_external_skia,vanish87/skia,AOSP-YU/platform_external_skia,MonkeyZZZZ/platform_external_skia,qrealka/skia-hc,vanish87/skia,OneRom/external_skia,Hikari-no-Tenshi/android_external_skia,boulzordev/android_external_skia,nfxosp/platform_external_skia,w3nd1go/android_external_skia,scroggo/skia,aosp-mirror/platform_external_skia,timduru/platform-external-skia,jtg-gg/skia,noselhq/skia,Hikari-no-Tenshi/android_external_skia,vanish87/skia,TeamExodus/external_skia,invisiblek/android_external_skia,ominux/skia,nvoron23/skia,pcwalton/skia,TeamTwisted/external_skia,Infinitive-OS/platform_external_skia,w3nd1go/android_external_skia,vanish87/skia,BrokenROM/external_skia,nvoron23/skia,google/skia,google/skia,qrealka/skia-hc,UBERMALLOW/external_skia,VRToxin-AOSP/android_external_skia,PAC-ROM/android_external_skia,AOSP-YU/platform_external_skia,scroggo/skia,qrealka/skia-hc,Infinitive-OS/platform_external_skia,amyvmiwei/skia,noselhq/skia,w3nd1go/android_external_skia,MonkeyZZZZ/platform_external_skia,spezi77/android_external_skia,boulzordev/android_external_skia,todotodoo/skia,MonkeyZZZZ/platform_external_skia,OneRom/external_skia,Igalia/skia,VRToxin-AOSP/android_external_skia,YUPlayGodDev/platform_external_skia,chenlian2015/skia_from_google,nvoron23/skia,VRToxin-AOSP/android_external_skia,chenlian2015/skia_from_google,BrokenROM/external_skia,YUPlayGodDev/platform_external_skia,DiamondLovesYou/skia-sys,vanish87/skia,google/skia,jtg-gg/skia,AOSPB/external_skia,todotodoo/skia,HalCanary/skia-hc,tmpvar/skia.cc,Hikari-no-Tenshi/android_external_skia,TeamTwisted/external_skia,HalCanary/skia-hc,UBERMALLOW/external_skia,todotodoo/skia,UBERMALLOW/external_skia,w3nd1go/android_external_skia,OneRom/external_skia,Infinitive-OS/platform_external_skia,TeamTwisted/external_skia,boulzordev/android_external_skia,tmpvar/skia.cc,qrealka/skia-hc,google/skia,Hikari-no-Tenshi/android_external_skia,AOSPB/external_skia,spezi77/android_external_skia,google/skia,rubenvb/skia,shahrzadmn/skia,tmpvar/skia.cc,DiamondLovesYou/skia-sys,AOSP-YU/platform_external_skia,Igalia/skia,rubenvb/skia,MinimalOS-AOSP/platform_external_skia,OneRom/external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,MonkeyZZZZ/platform_external_skia,boulzordev/android_external_skia,samuelig/skia,spezi77/android_external_skia,Jichao/skia,noselhq/skia,jtg-gg/skia,amyvmiwei/skia,YUPlayGodDev/platform_external_skia,ominux/skia,amyvmiwei/skia,AOSP-YU/platform_external_skia,MarshedOut/android_external_skia,UBERMALLOW/external_skia,chenlian2015/skia_from_google,w3nd1go/android_external_skia,MarshedOut/android_external_skia,timduru/platform-external-skia,MarshedOut/android_external_skia,tmpvar/skia.cc,Infinitive-OS/platform_external_skia,Jichao/skia,YUPlayGodDev/platform_external_skia,spezi77/android_external_skia,MinimalOS-AOSP/platform_external_skia,Jichao/skia,noselhq/skia,AOSP-YU/platform_external_skia,vanish87/skia,rubenvb/skia,amyvmiwei/skia,VRToxin-AOSP/android_external_skia,PAC-ROM/android_external_skia,Igalia/skia,timduru/platform-external-skia,OneRom/external_skia,shahrzadmn/skia,jtg-gg/skia,DiamondLovesYou/skia-sys,PAC-ROM/android_external_skia,Igalia/skia,nfxosp/platform_external_skia,w3nd1go/android_external_skia,HalCanary/skia-hc,rubenvb/skia,aosp-mirror/platform_external_skia,shahrzadmn/skia,qrealka/skia-hc,pcwalton/skia,UBERMALLOW/external_skia,nfxosp/platform_external_skia,pcwalton/skia,noselhq/skia,nfxosp/platform_external_skia,geekboxzone/mmallow_external_skia,timduru/platform-external-skia,Igalia/skia,spezi77/android_external_skia,Jichao/skia,shahrzadmn/skia,BrokenROM/external_skia,VRToxin-AOSP/android_external_skia,tmpvar/skia.cc,pcwalton/skia,YUPlayGodDev/platform_external_skia,aosp-mirror/platform_external_skia,VRToxin-AOSP/android_external_skia,MarshedOut/android_external_skia,DiamondLovesYou/skia-sys,DiamondLovesYou/skia-sys,todotodoo/skia,AOSPB/external_skia,amyvmiwei/skia,samuelig/skia,AOSPB/external_skia,MarshedOut/android_external_skia,invisiblek/android_external_skia,DiamondLovesYou/skia-sys,TeamTwisted/external_skia,chenlian2015/skia_from_google,aosp-mirror/platform_external_skia,rubenvb/skia,DiamondLovesYou/skia-sys,TeamExodus/external_skia,geekboxzone/mmallow_external_skia,AOSPB/external_skia,TeamTwisted/external_skia,noselhq/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,nfxosp/platform_external_skia,shahrzadmn/skia,aosp-mirror/platform_external_skia,todotodoo/skia,jtg-gg/skia,pcwalton/skia,ominux/skia,Infinitive-OS/platform_external_skia,UBERMALLOW/external_skia,YUPlayGodDev/platform_external_skia,rubenvb/skia,google/skia,MinimalOS-AOSP/platform_external_skia,TeamExodus/external_skia,samuelig/skia,TeamExodus/external_skia,Infinitive-OS/platform_external_skia,nvoron23/skia,MinimalOS-AOSP/platform_external_skia,geekboxzone/mmallow_external_skia,Infinitive-OS/platform_external_skia,invisiblek/android_external_skia,BrokenROM/external_skia,geekboxzone/mmallow_external_skia,invisiblek/android_external_skia,PAC-ROM/android_external_skia,vanish87/skia,nfxosp/platform_external_skia,todotodoo/skia,TeamTwisted/external_skia,shahrzadmn/skia,w3nd1go/android_external_skia,Igalia/skia,boulzordev/android_external_skia,jtg-gg/skia,Jichao/skia,samuelig/skia,AOSPB/external_skia,todotodoo/skia,HalCanary/skia-hc,HalCanary/skia-hc,UBERMALLOW/external_skia,chenlian2015/skia_from_google,samuelig/skia,aosp-mirror/platform_external_skia,nvoron23/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,invisiblek/android_external_skia,geekboxzone/mmallow_external_skia,Infinitive-OS/platform_external_skia,invisiblek/android_external_skia,amyvmiwei/skia,Hikari-no-Tenshi/android_external_skia,Jichao/skia,OneRom/external_skia,qrealka/skia-hc,PAC-ROM/android_external_skia,rubenvb/skia,BrokenROM/external_skia,noselhq/skia,geekboxzone/mmallow_external_skia,amyvmiwei/skia,AOSPB/external_skia,w3nd1go/android_external_skia,PAC-ROM/android_external_skia,google/skia,tmpvar/skia.cc,noselhq/skia,pcwalton/skia,todotodoo/skia,google/skia,MarshedOut/android_external_skia,scroggo/skia,Jichao/skia