Adding color space conversion code

LayoutTests/css3/filters/effect-reference-colorspace-hw.html

Index: LayoutTests/css3/filters/effect-reference-colorspace-hw.html
diff --git a/LayoutTests/css3/filters/effect-reference-colorspace-hw.html b/LayoutTests/css3/filters/effect-reference-colorspace-hw.html
new file mode 100644
index 0000000000000000000000000000000000000000..719d007fa2ad27c7fc5db4fd9399c5629d63a003
--- /dev/null
+++ b/LayoutTests/css3/filters/effect-reference-colorspace-hw.html
@@ -0,0 +1,69 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+  <defs>
+    <filter id="blend" color-interpolation-filters="linearRGB">
+      <feGaussianBlur stdDeviation="5 5" color-interpolation-filters="sRGB"/>
+      <feBlend in2="SourceGraphic" mode="screen" color-interpolation-filters="linearRGB"/>
+    </filter>
+
+    <filter id="blend-s" color-interpolation-filters="sRGB">
+      <feGaussianBlur stdDeviation="5 5" color-interpolation-filters="linearRGB"/>
+      <feBlend in2="SourceGraphic" mode="screen" color-interpolation-filters="sRGB"/>
+    </filter>
+
+    <filter id="lighting" color-interpolation-filters="linearRGB">
+      <feSpecularLighting color-interpolation-filters="sRGB">
+        <feSpotLight pointsAtX="160" pointsAtY="130" pointsAtZ="0" specularExponent="1" limitingConeAngle="20" x="0" y="0" z="10" color-interpolation-filters="linearRGB"/>
+      </feSpecularLighting>
+      <feColorMatrix type="matrix" values="0 0 0 1 0  0 0 0 1 0  0 0 0 1 0  0 0 0 0 1" color-interpolation-filters="linearRGB"/>
+      <feBlend in2="SourceGraphic" mode="multiply" color-interpolation-filters="linearRGB"/>
+    </filter>
+
+    <filter id="lighting-s" color-interpolation-filters="sRGB">
+      <feSpecularLighting color-interpolation-filters="linearRGB">
+        <feSpotLight pointsAtX="160" pointsAtY="130" pointsAtZ="0" specularExponent="1" limitingConeAngle="20" x="0" y="0" z="10" color-interpolation-filters="sRGB"/>
+      </feSpecularLighting>
+      <feColorMatrix type="matrix" values="0 0 0 1 0  0 0 0 1 0  0 0 0 1 0  0 0 0 0 1" color-interpolation-filters="sRGB"/>
+      <feBlend in2="SourceGraphic" mode="multiply" color-interpolation-filters="sRGB"/>
+    </filter>
+
+    <filter id="merge">
+      <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.3 0"  result="trans" color-interpolation-filters="linearRGB"/>
+      <feOffset dx="5"  dy="5"  in="trans" result="offset1" color-interpolation-filters="linearRGB"/>
+      <feOffset dx="10" dy="10" in="trans" result="offset2" color-interpolation-filters="linearRGB"/>
+      <feOffset dx="15" dy="15" in="trans" result="offset3" color-interpolation-filters="linearRGB"/>
+      <feMerge color-interpolation-filters="linearRGB">
+        <feMergeNode in="trans" color-interpolation-filters="linearRGB"/>
+        <feMergeNode in="offset1" color-interpolation-filters="linearRGB"/>
+        <feMergeNode in="offset2" color-interpolation-filters="linearRGB"/>
+        <feMergeNode in="offset3" color-interpolation-filters="linearRGB"/>
+      </feMerge>
+    </filter>
+
+    <filter id="merge-s" color-interpolation-filters="sRGB">
+      <feColorMatrix type="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 0.3 0"  result="trans"/>
+      <feOffset dx="5"  dy="5"  in="trans" result="offset1"/>
+      <feOffset dx="10" dy="10" in="trans" result="offset2"/>
+      <feOffset dx="15" dy="15" in="trans" result="offset3"/>
+      <feMerge>
+        <feMergeNode in="trans"/>
+        <feMergeNode in="offset1"/>
+        <feMergeNode in="offset2"/>
+        <feMergeNode in="offset3"/>
+      </feMerge>
+    </filter>
+  </defs>
+</svg>
+<style>
+img {
+    margin: 10px;
+    -webkit-transform: translateZ(0);
+}
+</style>
+<img src="resources/reference.png">
+<img style="-webkit-filter: url(#blend); filter: url(#blend);" src="resources/reference.png">
+<img style="-webkit-filter: url(#blend-s); filter: url(#blend-s);" src="resources/reference.png">
+<img style="-webkit-filter: url(#lighting); filter: url(#lighting);" src="resources/reference.png">
+<img style="-webkit-filter: url(#lighting-s); filter: url(#lighting-s);" src="resources/reference.png">
+<img style="-webkit-filter: url(#merge); filter: url(#merge);" src="resources/reference.png">
+<img style="-webkit-filter: url(#merge-s); filter: url(#merge-s);" src="resources/reference.png">
+