Bug 1442190 - Part 6: Make three reftests fuzzy r=mattwoodrow

MozReview-Commit-ID: 4zSYL3BxhCg

--HG--
extra : rebase_source : 082c98aa8248364ebf912e08061a309ec45e9ee8

layout/reftests/bugs/reftest.list

@@ -1682,7 +1682,7 @@ HTTP == 652991-3.html 652991-3-ref.html
 HTTP == 652991-4.html 652991-4-ref.html
 fuzzy-if(skiaContent,1,5) == 653930-1.html 653930-1-ref.html
 == 654057-1.html 654057-1-ref.html
-fuzzy-if(skiaContent,1,4500) == 654950-1.html 654950-1-ref.html # Quartz alpha blending doesn't match GL alpha blending
+fuzzy-if(skiaContent,1,65536) == 654950-1.html 654950-1-ref.html # Quartz alpha blending doesn't match GL alpha blending
 == 655549-1.html 655549-1-ref.html
 == 655836-1.html 655836-1-ref.html
 != 656875.html about:blank

layout/reftests/css-grid/reftest.list

@@ -16,7 +16,7 @@ fails == grid-whitespace-handling-1b.xhtml grid-whitespace-handling-1-ref.xhtml
 == grid-track-sizing-001.html grid-track-sizing-001-ref.html
 == grid-track-sizing-002.html grid-track-sizing-002-ref.html
 == grid-abspos-items-001.html grid-abspos-items-001-ref.html
-== grid-abspos-items-002.html grid-abspos-items-002-ref.html
+fuzzy(180,3) == grid-abspos-items-002.html grid-abspos-items-002-ref.html # flattening differences
 == grid-abspos-items-003.html grid-abspos-items-003-ref.html
 == grid-abspos-items-004.html grid-abspos-items-004-ref.html
 == grid-abspos-items-005.html grid-abspos-items-005-ref.html