--- a/layout/reftests/box-shadow/reftest.list
+++ b/layout/reftests/box-shadow/reftest.list
@@ -20,17 +20,17 @@ random-if(layersGPUAccelerated) == boxsh
 random-if(d2d) fuzzy-if(skiaContent,1,100) fuzzy-if(webrender,127,3528) == boxshadow-rounded-spread.html boxshadow-rounded-spread-ref.html
 fuzzy-if(skiaContent,1,50) == boxshadow-dynamic.xul boxshadow-dynamic-ref.xul
 random-if(d2d) == boxshadow-onecorner.html boxshadow-onecorner-ref.html
 random-if(d2d) == boxshadow-twocorners.html boxshadow-twocorners-ref.html
 random-if(d2d) == boxshadow-threecorners.html boxshadow-threecorners-ref.html
 fuzzy(2,440) fuzzy-if(webrender,137-137,649-649) == boxshadow-skiprect.html boxshadow-skiprect-ref.html
 == boxshadow-opacity.html boxshadow-opacity-ref.html
 == boxshadow-color-rounding.html boxshadow-color-rounding-ref.html
-== boxshadow-color-rounding-middle.html boxshadow-color-rounding-middle-ref.html
+fuzzy-if(webrender,2-2,6944-6944) == boxshadow-color-rounding-middle.html boxshadow-color-rounding-middle-ref.html
 fuzzy(3,500) fuzzy-if(d2d,2,1080) == boxshadow-border-radius-int.html boxshadow-border-radius-int-ref.html
 == boxshadow-inset-neg-spread.html about:blank
 == boxshadow-inset-neg-spread2.html boxshadow-inset-neg-spread2-ref.html
 fuzzy(26,3610) fuzzy-if(d2d,26,5910) fuzzy-if(webrender,43,200) == boxshadow-rotated.html boxshadow-rotated-ref.html # Bug 1211264
 == boxshadow-inset-large-border-radius.html boxshadow-inset-large-border-radius-ref.html
 
 # fuzzy due to blur going inside, but as long as it's essentially black instead of a light gray its ok.
 fuzzy(13,9445) fuzzy-if(d2d,13,10926) fails-if(webrender) == boxshadow-inset-large-offset.html boxshadow-inset-large-offset-ref.html

--- a/layout/reftests/css-break/reftest.list
+++ b/layout/reftests/css-break/reftest.list
@@ -1,12 +1,12 @@
 default-preferences pref(layout.css.box-decoration-break.enabled,true)
 
 == box-decoration-break-1.html box-decoration-break-1-ref.html
-fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,6-6,250-250) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
+fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,6-6,8490-8490) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
 fuzzy(45,460) fuzzy-if(skiaContent,57,439) fuzzy-if(Android,57,1330) fuzzy-if(styloVsGecko,45,1410) == box-decoration-break-with-outset-box-shadow-1.html box-decoration-break-with-outset-box-shadow-1-ref.html # Bug 1386543
 random-if(!gtkWidget) == box-decoration-break-border-image.html box-decoration-break-border-image-ref.html
 == box-decoration-break-block-border-padding.html box-decoration-break-block-border-padding-ref.html
 == box-decoration-break-block-margin.html box-decoration-break-block-margin-ref.html
 fuzzy-if(!Android,1,62) fuzzy-if(Android,8,6627) == box-decoration-break-first-letter.html box-decoration-break-first-letter-ref.html #Bug 1313773
 == box-decoration-break-with-bidi.html box-decoration-break-with-bidi-ref.html
 == box-decoration-break-bug-1235152.html box-decoration-break-bug-1235152-ref.html
 == box-decoration-break-bug-1249913.html box-decoration-break-bug-1249913-ref.html

--- a/layout/reftests/svg/filters/css-filters/reftest.list
+++ b/layout/reftests/svg/filters/css-filters/reftest.list
@@ -7,17 +7,17 @@ fuzzy-if(webrender,9-9,4780-4780) == blu
 == blur.svg blur-ref.svg
 == blur-calc.html blur-calc-ref.html
 == blur-calc-negative.html blur-calc-negative-ref.html
 skip-if(d2d) == blur-cap-large-radius-on-software.html blur-cap-large-radius-on-software-ref.html
 fuzzy-if(webrender,9-9,4780-4780) == blur-em-radius.html blur-em-radius-ref.html
 == blur-invalid-radius.html blur-invalid-radius-ref.html
 fuzzy-if(webrender,9-9,4780-4780) == blur-rem-radius.html blur-rem-radius-ref.html
 == blur-zero-radius.html blur-zero-radius-ref.html
-fuzzy-if(webrender,7-7,21784-21784) == blur-zoomed-page.html blur-zoomed-page-ref.html
+fuzzy-if(webrender,6-6,21308-21308) == blur-zoomed-page.html blur-zoomed-page-ref.html
 == brightness.html brightness-ref.html
 == brightness-darken.html brightness-darken-ref.html
 == brightness-extreme.html brightness-extreme-ref.html
 == brightness-one.html brightness-one-ref.html
 == brightness-percent.html brightness-percent-ref.html
 == brightness-zero.html brightness-zero-ref.html
 == containing-block-1.html containing-block-1-ref.html
 == contrast.html contrast-ref.html