--- a/layout/reftests/bidi/reftest.list
+++ b/layout/reftests/bidi/reftest.list
@@ -81,17 +81,17 @@ fuzzy-if(skiaContent,1,1100) fails-if(st
 random-if(winWidget) == 305643-1.html 305643-1-ref.html # depends on windows version, see bug 590101
 == 332655-1.html 332655-1-ref.html
 == 332655-2.html 332655-2-ref.html
 == 381279-1.html 381279-1-ref.html
 == 386339.html 386339-ref.html
 == 409375.html 409375-ref.html
 == 413542-1.html 413542-1-ref.html
 == 413542-2.html 413542-2-ref.html
-== 413928-1.html 413928-1-ref.html
+fails-if(webrender) == 413928-1.html 413928-1-ref.html
 == 413928-2.html 413928-2-ref.html
 == 425338-1a.html 425338-1-ref.html
 == 425338-1b.html 425338-1-ref.html
 == 489517-1.html 489517-1-ref.html
 == 489887-1.html 489887-1-ref.html
 == 492231-1.html 492231-1-ref.html
 == 496006-1.html 496006-1-ref.html
 == 503269-1.html 503269-1-ref.html

--- a/layout/reftests/counter-style/reftest.list
+++ b/layout/reftests/counter-style/reftest.list
@@ -1,35 +1,35 @@
-== system-cyclic.html     system-cyclic-ref.html
-== system-fixed.html      system-fixed-ref.html
-== system-symbolic.html   system-symbolic-ref.html
-== system-alphabetic.html system-alphabetic-ref.html
-== system-numeric.html    system-numeric-ref.html
-== system-additive.html   system-additive-ref.html
-== system-extends.html    system-extends-ref.html
+fails-if(webrender) == system-cyclic.html     system-cyclic-ref.html
+fails-if(webrender) == system-fixed.html      system-fixed-ref.html
+fails-if(webrender) == system-symbolic.html   system-symbolic-ref.html
+fails-if(webrender) == system-alphabetic.html system-alphabetic-ref.html
+fails-if(webrender) == system-numeric.html    system-numeric-ref.html
+fails-if(webrender) == system-additive.html   system-additive-ref.html
+fails-if(webrender) == system-extends.html    system-extends-ref.html
 == system-cyclic-invalid.html     system-common-invalid-ref.html
 == system-fixed-invalid.html      system-common-invalid2-ref.html
 == system-symbolic-invalid.html   system-common-invalid-ref.html
 == system-alphabetic-invalid.html system-common-invalid2-ref.html
 == system-numeric-invalid.html    system-common-invalid2-ref.html
 == system-additive-invalid.html   system-common-invalid-ref.html
-== system-extends-invalid.html    system-extends-invalid-ref.html
-== descriptor-negative.html descriptor-negative-ref.html
-== descriptor-prefix.html   descriptor-prefix-ref.html
-== descriptor-suffix.html   descriptor-suffix-ref.html
-== descriptor-range.html    descriptor-range-ref.html
-== descriptor-pad.html      descriptor-pad-ref.html
-== descriptor-fallback.html descriptor-fallback-ref.html
-== descriptor-symbols.html  descriptor-symbols-ref.html
-== descriptor-negative-invalid.html descriptor-negative-invalid-ref.html
-== descriptor-prefix-invalid.html   descriptor-prefix-invalid-ref.html
-== descriptor-suffix-invalid.html   descriptor-suffix-invalid-ref.html
-== descriptor-range-invalid.html    descriptor-range-invalid-ref.html
-== descriptor-pad-invalid.html      descriptor-pad-invalid-ref.html
-== descriptor-fallback.html         descriptor-fallback-ref.html
-== descriptor-symbols-invalid.html  descriptor-symbols-invalid-ref.html
+fails-if(webrender) == system-extends-invalid.html    system-extends-invalid-ref.html
+fails-if(webrender) == descriptor-negative.html descriptor-negative-ref.html
+fails-if(webrender) == descriptor-prefix.html   descriptor-prefix-ref.html
+fails-if(webrender) == descriptor-suffix.html   descriptor-suffix-ref.html
+fails-if(webrender) == descriptor-range.html    descriptor-range-ref.html
+fails-if(webrender) == descriptor-pad.html      descriptor-pad-ref.html
+fails-if(webrender) == descriptor-fallback.html descriptor-fallback-ref.html
+fails-if(webrender) == descriptor-symbols.html  descriptor-symbols-ref.html
+fails-if(webrender) == descriptor-negative-invalid.html descriptor-negative-invalid-ref.html
+fails-if(webrender) == descriptor-prefix-invalid.html   descriptor-prefix-invalid-ref.html
+fails-if(webrender) == descriptor-suffix-invalid.html   descriptor-suffix-invalid-ref.html
+fails-if(webrender) == descriptor-range-invalid.html    descriptor-range-invalid-ref.html
+fails-if(webrender) == descriptor-pad-invalid.html      descriptor-pad-invalid-ref.html
+fails-if(webrender) == descriptor-fallback.html         descriptor-fallback-ref.html
+fails-if(webrender) == descriptor-symbols-invalid.html  descriptor-symbols-invalid-ref.html
 == name-case-sensitivity.html       name-case-sensitivity-ref.html
-== dependent-builtin.html           dependent-builtin-ref.html
+fails-if(webrender) == dependent-builtin.html           dependent-builtin-ref.html
 == redefine-builtin.html            redefine-builtin-ref.html
 == redefine-attr-mapping.html       redefine-attr-mapping-ref.html
 == disclosure-styles.html           disclosure-styles-ref.html
 fails-if(stylo) == symbols-function.html            symbols-function-ref.html
 == symbols-function-invalid.html    symbols-function-invalid-ref.html

--- a/layout/reftests/counters/reftest.list
+++ b/layout/reftests/counters/reftest.list
@@ -63,17 +63,17 @@
 fails-if(xulRuntime.XPCOMABI.match(/arm/)) == counter-reset-integer-range.html counter-reset-integer-range-ref.html # bug 989718
 == counter-ua-limits-00.html counter-ua-limits-00-ref.html
 == counter-ua-limits-01.html counter-ua-limits-01-ref.html
 fails-if(xulRuntime.XPCOMABI.match(/arm/)) == counter-ua-limits-02.html counter-ua-limits-02-ref.html # bug 989718
 == counter-ua-limits-03.html counter-ua-limits-03-ref.html
 == counter-ua-limits-list-00.html counter-ua-limits-list-00-ref.html
 == counter-ua-limits-list-01.html counter-ua-limits-list-01-ref.html
 == multiple-thai-counters.html multiple-thai-counters-ref.html
-== counter-suffix.html counter-suffix-ref.html
+fails-if(webrender) == counter-suffix.html counter-suffix-ref.html
 == counter-cjk-decimal.html counter-cjk-decimal-ref.html
 == counter-japanese-informal.html counter-japanese-informal-ref.html
 == counter-japanese-formal.html counter-japanese-formal-ref.html
 == counter-korean-hangul-formal.html counter-korean-hangul-formal-ref.html
 == counter-korean-hanja-informal.html counter-korean-hanja-informal-ref.html
 == counter-korean-hanja-formal.html counter-korean-hanja-formal-ref.html
 == counter-simp-chinese-informal.html counter-simp-chinese-informal-ref.html
 == counter-simp-chinese-formal.html counter-simp-chinese-formal-ref.html

--- a/layout/reftests/list-item/reftest.list
+++ b/layout/reftests/list-item/reftest.list
@@ -1,14 +1,14 @@
 fuzzy-if(OSX,55,4) == numbering-1.html numbering-1-ref.html
 == numbering-2.html numbering-2-ref.html
 pref(layout.css.grid.enabled,true) fuzzy-if(OSX,8,1) == numbering-3.html numbering-3-ref.html
 fuzzy-if(OSX,72,2) == numbering-4.html numbering-4-ref.html
-== numbering-5.html numbering-5-ref.html
+fails-if(webrender) == numbering-5.html numbering-5-ref.html
 == ol-reversed-1a.html ol-reversed-1-ref.html
 asserts(1) asserts-if(stylo,2) == ol-reversed-1b.html ol-reversed-1-ref.html # bug 478135
 == ol-reversed-1c.html ol-reversed-1-ref.html
 == ol-reversed-2.html ol-reversed-2-ref.html
 == ol-reversed-3.html ol-reversed-3-ref.html
 == bullet-space-1.html bullet-space-1-ref.html
 == bullet-space-2.html bullet-space-2-ref.html
 == bullet-intrinsic-isize-1.html bullet-intrinsic-isize-1-ref.html
-== bullet-intrinsic-isize-2.html bullet-intrinsic-isize-2-ref.html
+fails-if(webrender) == bullet-intrinsic-isize-2.html bullet-intrinsic-isize-2-ref.html

--- a/layout/reftests/w3c-css/submitted/lists-3/reftest.list
+++ b/layout/reftests/w3c-css/submitted/lists-3/reftest.list
@@ -1,3 +1,3 @@
 # Tests for list-style-type
-fails-if(stylo) == list-style-type-string-001a.html list-style-type-string-001-ref.html
-fails-if(stylo) == list-style-type-string-001b.html list-style-type-string-001-ref.html
+fails-if(stylo||webrender) == list-style-type-string-001a.html list-style-type-string-001-ref.html
+fails-if(stylo||webrender) == list-style-type-string-001b.html list-style-type-string-001-ref.html

--- a/layout/reftests/writing-mode/reftest.list
+++ b/layout/reftests/writing-mode/reftest.list
@@ -26,17 +26,17 @@ fails-if(stylo) == 1094434-2.html 109443
 == 1096224-1b.html 1096224-1-ref.html
 fails-if(!stylo) == 1102175-1a.html 1102175-1-ref.html
 == 1102175-1b.html 1102175-1-ref.html
 == 1103613-1.html 1103613-1-ref.html
 == 1105268-1-min-max-dimensions.html 1105268-1-min-max-dimensions-ref.html
 == 1105268-2-min-max-dimensions.html 1105268-2-min-max-dimensions-ref.html
 == 1106669-1-intrinsic-for-container.html 1106669-1-intrinsic-for-container-ref.html
 == 1108923-1-percentage-margins.html 1108923-1-percentage-margins-ref.html
-== 1111944-1-list-marker.html 1111944-1-list-marker-ref.html
+fails-if(webrender) == 1111944-1-list-marker.html 1111944-1-list-marker-ref.html
 fuzzy(116,94) fuzzy-if(winWidget,135,124) HTTP(..) == 1115916-1-vertical-metrics.html 1115916-1-vertical-metrics-ref.html
 == 1117210-1-vertical-baseline-snap.html 1117210-1-vertical-baseline-snap-ref.html
 fails-if(stylo) == 1117227-1-text-overflow.html 1117227-1-text-overflow-ref.html
 == 1122366-1-margin-collapse.html 1122366-1-margin-collapse-ref.html
 == 1124636-1-fieldset-max-height.html 1124636-1-fieldset-max-height-ref.html
 == 1124636-2-fieldset-min-height.html 1124636-2-fieldset-min-height-ref.html
 
 == ua-style-sheet-margin-1.html ua-style-sheet-margin-1-ref.html