Implement filter effects region for reference filters.

LayoutTests/css3/filters/effect-reference-composite.html

Index: LayoutTests/css3/filters/effect-reference-composite.html
diff --git a/LayoutTests/css3/filters/effect-reference-composite.html b/LayoutTests/css3/filters/effect-reference-composite.html
index a433302cafef0118431c14d214a807d3135177a1..a254ea72546896f13603147123bd43f5360d2ca0 100644
--- a/LayoutTests/css3/filters/effect-reference-composite.html
+++ b/LayoutTests/css3/filters/effect-reference-composite.html
@@ -1,61 +1,61 @@
 <svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
   <defs>
-    <filter id="over" color-interpolation-filters="sRGB">
+    <filter id="over" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="over"/>
     </filter>
-    <filter id="in" color-interpolation-filters="sRGB">
+    <filter id="in" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="in"/>
     </filter>
-    <filter id="out" color-interpolation-filters="sRGB">
+    <filter id="out" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="out"/>
     </filter>
-    <filter id="atop" color-interpolation-filters="sRGB">
+    <filter id="atop" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="atop"/>
     </filter>
-    <filter id="xor" color-interpolation-filters="sRGB">
+    <filter id="xor" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="xor"/>
     </filter>
-    <filter id="arithmetic" color-interpolation-filters="sRGB">
+    <filter id="arithmetic" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="arithmetic" k1="0" k2="1" k3="1" k4="0"/>
     </filter>
-    <filter id="over-subregion" color-interpolation-filters="sRGB">
+    <filter id="over-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="over" x="20" y="20" width="120" height="50"/>
     </filter>
-    <filter id="in-subregion" color-interpolation-filters="sRGB">
+    <filter id="in-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="in" x="20" y="20" width="120" height="50"/>
     </filter>
-    <filter id="out-subregion" color-interpolation-filters="sRGB">
+    <filter id="out-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="out" x="20" y="20" width="120" height="50"/>
     </filter>
-    <filter id="atop-subregion" color-interpolation-filters="sRGB">
+    <filter id="atop-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="atop" x="20" y="20" width="120" height="50"/>
     </filter>
-    <filter id="xor-subregion" color-interpolation-filters="sRGB">
+    <filter id="xor-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="xor" x="20" y="20" width="120" height="50"/>
     </filter>
-    <filter id="arithmetic-subregion" color-interpolation-filters="sRGB">
+    <filter id="arithmetic-subregion" color-interpolation-filters="sRGB" x="0%" y="0%" width="115%" height="115%">
       <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.5 0" result="transp"/>
       <feOffset dx="10" dy="10"/>
       <feComposite in2="transp" operator="arithmetic" k1="0" k2="1" k3="1" k4="0" x="20" y=20" width="120" height="50"/>