Fix textureDomain/bleed prevention in msaa
Fix textureDomain/bleed prevention in msaa

This updates Ganesh's bleed avoidance check to handle the case where the
sample location may be outside of the rect geometry but used because it
partially covers the pixel.

BUG=skia:4066

Review URL: https://codereview.chromium.org/1237623012

rubenvb/skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,shahrzadmn/skia,qrealka/skia-hc,ominux/skia,google/skia,HalCanary/skia-hc,ominux/skia,todotodoo/skia,qrealka/skia-hc,google/skia,google/skia,noselhq/skia,noselhq/skia,google/skia,nvoron23/skia,tmpvar/skia.cc,nvoron23/skia,Hikari-no-Tenshi/android_external_skia,vanish87/skia,nvoron23/skia,shahrzadmn/skia,vanish87/skia,tmpvar/skia.cc,shahrzadmn/skia,HalCanary/skia-hc,shahrzadmn/skia,rubenvb/skia,vanish87/skia,todotodoo/skia,ominux/skia,shahrzadmn/skia,google/skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,rubenvb/skia,aosp-mirror/platform_external_skia,vanish87/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,HalCanary/skia-hc,nvoron23/skia,vanish87/skia,shahrzadmn/skia,ominux/skia,qrealka/skia-hc,vanish87/skia,ominux/skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,nvoron23/skia,rubenvb/skia,ominux/skia,nvoron23/skia,ominux/skia,rubenvb/skia,rubenvb/skia,Hikari-no-Tenshi/android_external_skia,noselhq/skia,aosp-mirror/platform_external_skia,qrealka/skia-hc,rubenvb/skia,nvoron23/skia,tmpvar/skia.cc,tmpvar/skia.cc,qrealka/skia-hc,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,google/skia,google/skia,vanish87/skia,noselhq/skia,qrealka/skia-hc,Hikari-no-Tenshi/android_external_skia,noselhq/skia,HalCanary/skia-hc,shahrzadmn/skia,HalCanary/skia-hc,tmpvar/skia.cc,noselhq/skia,google/skia,todotodoo/skia,rubenvb/skia,noselhq/skia,vanish87/skia,Hikari-no-Tenshi/android_external_skia,todotodoo/skia,todotodoo/skia,ominux/skia,HalCanary/skia-hc,shahrzadmn/skia,aosp-mirror/platform_external_skia,todotodoo/skia,nvoron23/skia,ominux/skia,google/skia,Hikari-no-Tenshi/android_external_skia,tmpvar/skia.cc,noselhq/skia,shahrzadmn/skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,todotodoo/skia,nvoron23/skia,HalCanary/skia-hc,qrealka/skia-hc,google/skia,todotodoo/skia,todotodoo/skia,tmpvar/skia.cc,vanish87/skia,qrealka/skia-hc,noselhq/skia,tmpvar/skia.cc,rubenvb/skia,aosp-mirror/platform_external_skia