rename from layout/reftests/svg/filters/filter-in-mask.svg
rename to layout/reftests/svg/filters/filter-in-mask-01.svg

new file mode 100644
--- /dev/null
+++ b/layout/reftests/svg/filters/filter-in-mask-02.svg
@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <filter x="0" y="0" width="1" height="1" id="solid">
+      <feFlood flood-color="black"/>
+    </filter>
+    <mask id="myMask">
+      <rect fill="white" width="100%" height="100%"/>
+      <g transform="translate(10000, 0)">
+        <rect fill="blue" width="100%" height="100%" filter="url(#solid)"/>
+      </g>
+    </mask>
+  </defs>
+  <!-- You should see pure lime color as background color of a whole page. -->
+  <rect fill="red" width="100%" height="100%"/>
+  <g mask="url(#myMask)">
+    <rect x="0" y="0" width="100%" height="100%" fill="lime"></rect>
+  </g>
+</svg>
\ No newline at end of file

--- a/layout/reftests/svg/filters/reftest.list
+++ b/layout/reftests/svg/filters/reftest.list
@@ -63,17 +63,18 @@ skip-if(d2d) == feGaussianBlur-cap-large
 == feTile-1.svg feTile-1-ref.svg
 == feTile-2.svg feTile-2-ref.svg
 
 # no tests for feTurbulence
 
 == filter-clipped-rect-01.svg pass.svg
 == filter-in-pattern-01.svg pass.svg
 fuzzy(5,67) != filter-in-pattern-02.svg filter-in-pattern-02-ref.svg
-random-if(winWidget) == filter-in-mask.svg pass.svg # bug 1356139
+random-if(winWidget) == filter-in-mask-01.svg pass.svg # bug 1356139
+== filter-in-mask-02.svg pass.svg
 == filter-inner-svg-01.svg pass.svg
 == filter-inner-svg-02.svg pass.svg
 == filter-inner-svg-03.svg pass.svg
 fails == filter-marked-line-01.svg pass.svg # bug 477704
 == filter-kernelUnitLength-01.svg filter-kernelUnitLength-01-ref.svg
 == filter-marked-line-02.svg pass.svg
 == filter-marked-line-03.svg pass.svg
 == filter-marked-line-04.svg pass.svg