Bug 1207332. Part 2: Reftest fuzzing for skia content on OS X. r=lsalzman

layout/reftests/mathml/reftest.list

@@ -259,7 +259,7 @@ fuzzy-if(d2d,7,1) == menclose-5-downdiagonalstrike.html menclose-5-downdiagonals
 == menclose-5-right.html menclose-5-right-ref.html
 fuzzy-if(skiaContent,5,5) == menclose-5-roundedbox.html menclose-5-roundedbox-ref.html
 == menclose-5-top.html menclose-5-top-ref.html
-== menclose-5-updiagonalarrow.html menclose-5-updiagonalarrow-ref.html
+fuzzy-if(skiaContent,1,1) == menclose-5-updiagonalarrow.html menclose-5-updiagonalarrow-ref.html
 fuzzy-if(d2d,7,1) == menclose-5-updiagonalstrike.html menclose-5-updiagonalstrike-ref.html
 == menclose-5-verticalstrike.html menclose-5-verticalstrike-ref.html
 == menclose-5-phasorangle.html menclose-5-phasorangle-ref.html

layout/reftests/writing-mode/reftest.list

@@ -69,7 +69,7 @@ skip-if(Android||B2G||Mulet||(winWidget&&!/^Windows\x20NT\x205\.1/.test(http.osc
 skip-if(!(Android||B2G||Mulet)) == ua-style-sheet-textarea-1.html ua-style-sheet-textarea-1b-ref.html # Initial mulet triage: parity with B2G/B2G Desktop
 skip-if(!winWidget||/^Windows\x20NT\x205\.1/.test(http.oscpu)) == ua-style-sheet-textarea-1.html ua-style-sheet-textarea-1c-ref.html
 == ua-style-sheet-checkbox-radio-1.html ua-style-sheet-checkbox-radio-1-ref.html
-skip-if(Android||B2G||Mulet) fuzzy-if(skiaContent,2,5) == ua-style-sheet-button-1.html ua-style-sheet-button-1a-ref.html # Initial mulet triage: parity with B2G/B2G Desktop
+skip-if(Android||B2G||Mulet) fuzzy-if(skiaContent,2,6) == ua-style-sheet-button-1.html ua-style-sheet-button-1a-ref.html # Initial mulet triage: parity with B2G/B2G Desktop
 skip-if(!(Android||B2G||Mulet)) == ua-style-sheet-button-1.html ua-style-sheet-button-1b-ref.html # Initial mulet triage: parity with B2G/B2G Desktop
 == ua-style-sheet-input-color-1.html ua-style-sheet-input-color-1-ref.html
 == ua-style-sheet-input-number-1.html ua-style-sheet-input-number-1-ref.html