Bug 746883. More test fuzz. r=roc

layout/reftests/bugs/reftest.list

@@ -1489,7 +1489,7 @@ random-if(!haveTestPlugin) == 546071-1.html 546071-1-ref.html
 # 553571 depends on MS Indic shaping behavior and Win7 font support;
 # not expected to be reliable on XP or non-Windows platforms
 random-if(!winWidget) random-if(/^Windows\x20NT\x205/.test(http.oscpu)) != 553571-1.html 553571-1-notref.html # expect dotted circle in test, not in ref
-fuzzy-if(azureSkia,6,90) random-if(d2d) == 555388-1.html 555388-1-ref.html
+fuzzy-if(!contentSameGfxBackendAsCanvas,2,91) random-if(d2d) == 555388-1.html 555388-1-ref.html
 == 556661-1.html 556661-1-ref.html
 fails-if(Android) == 557087-1.html 557087-ref.html
 fails-if(Android) == 557087-2.html 557087-ref.html

layout/reftests/svg/reftest.list

@@ -179,7 +179,7 @@ fails == inline-in-xul-basic-01.xul pass.svg
 == nested-viewBox-01.svg pass.svg
 == nesting-invalid-01.svg nesting-invalid-01-ref.svg
 == non-scaling-stroke-01.svg non-scaling-stroke-01-ref.svg 
-fuzzy-if(Android,9,61) == non-scaling-stroke-02.svg non-scaling-stroke-02-ref.svg 
+fuzzy-if(Android,9,61) fuzzy-if(!contentSameGfxBackendAsCanvas,1,99) == non-scaling-stroke-02.svg non-scaling-stroke-02-ref.svg 
 == objectBoundingBox-and-clipPath.svg pass.svg
 # Bug 588684
 random-if(gtk2Widget) == objectBoundingBox-and-fePointLight-01.svg objectBoundingBox-and-fePointLight-01-ref.svg