[SVG2] Add support for marker orient="auto-start-reverse".

LayoutTests/svg/animations/script-tests/animate-marker-orient-from-auto-to-auto-start-reverse.js

Index: LayoutTests/svg/animations/script-tests/animate-marker-orient-from-auto-to-auto-start-reverse.js
diff --git a/LayoutTests/svg/animations/script-tests/animate-marker-orient-from-angle-to-auto.js b/LayoutTests/svg/animations/script-tests/animate-marker-orient-from-auto-to-auto-start-reverse.js
similarity index 91%
copy from LayoutTests/svg/animations/script-tests/animate-marker-orient-from-angle-to-auto.js
copy to LayoutTests/svg/animations/script-tests/animate-marker-orient-from-auto-to-auto-start-reverse.js
index e4b91c30f00f1300ab75514787c4df86c231ce5a..58b36703486c31f8279455588bfbea3a9b629e9c 100644
--- a/LayoutTests/svg/animations/script-tests/animate-marker-orient-from-angle-to-auto.js
+++ b/LayoutTests/svg/animations/script-tests/animate-marker-orient-from-auto-to-auto-start-reverse.js
@@ -1,4 +1,4 @@
-description("Animate SVGMarkerElement orientAttr from an angle to auto");
+description("Animate SVGMarkerElement orientAttr from auto to auto-start-reverse");
 createSVGTestCase();
 
 // Setup test document
@@ -38,8 +38,8 @@ animate1.setAttribute("id", "animation");
 animate1.setAttribute("attributeName", "orient");
 animate1.setAttribute("begin", "path.click");
 animate1.setAttribute("dur", "4s");
-animate1.setAttribute("from", "90deg");
-animate1.setAttribute("to", "auto");
+animate1.setAttribute("from", "auto");
+animate1.setAttribute("to", "auto-start-reverse");
 animate1.setAttribute("fill", "freeze");
 marker.appendChild(animate1);
 
@@ -53,10 +53,10 @@ function sample1() {
 }
 
 function sample2() {
-    shouldBeCloseEnough("marker.orientAngle.animVal.value", "90");
+    shouldBeCloseEnough("marker.orientAngle.animVal.value", "0");
     shouldBe("marker.orientAngle.baseVal.value", "0");
 
-    shouldBe("marker.orientType.animVal", "SVGMarkerElement.SVG_MARKER_ORIENT_ANGLE");
+    shouldBe("marker.orientType.animVal", "SVGMarkerElement.SVG_MARKER_ORIENT_AUTO");
     shouldBe("marker.orientType.baseVal", "SVGMarkerElement.SVG_MARKER_ORIENT_ANGLE");
 }
 
@@ -64,7 +64,7 @@ function sample3() {
     shouldBeCloseEnough("marker.orientAngle.animVal.value", "0");
     shouldBe("marker.orientAngle.baseVal.value", "0");
 
-    shouldBe("marker.orientType.animVal", "SVGMarkerElement.SVG_MARKER_ORIENT_AUTO");
+    shouldBe("marker.orientType.animVal", "SVGMarkerElement.SVG_MARKER_ORIENT_UNKNOWN");
     shouldBe("marker.orientType.baseVal", "SVGMarkerElement.SVG_MARKER_ORIENT_ANGLE");
 }