[SVG2] Add support for the 'turn' unit in <angle>.

Source/core/svg/SVGAngleTearOff.cpp

Index: Source/core/svg/SVGAngleTearOff.cpp
diff --git a/Source/core/svg/SVGAngleTearOff.cpp b/Source/core/svg/SVGAngleTearOff.cpp
index 8a5f832ace8e6ee456c1aa82d5aebe6f3d21c665..1ddc013cad4d1d1cdac4a680b37b1f12d723ab23 100644
--- a/Source/core/svg/SVGAngleTearOff.cpp
+++ b/Source/core/svg/SVGAngleTearOff.cpp
@@ -75,7 +75,7 @@ void SVGAngleTearOff::newValueSpecifiedUnits(unsigned short unitType, float valu
         return;
     }
 
-    if (unitType == SVGAngle::SVG_ANGLETYPE_UNKNOWN || unitType > SVGAngle::SVG_ANGLETYPE_GRAD) {
+    if (unitType == SVGAngle::SVG_ANGLETYPE_UNKNOWN || unitType > SVGAngle::SVG_ANGLETYPE_TURN) {
         exceptionState.throwDOMException(NotSupportedError, "Cannot set value with unknown or invalid units (" + String::number(unitType) + ").");
         return;
     }
@@ -91,7 +91,7 @@ void SVGAngleTearOff::convertToSpecifiedUnits(unsigned short unitType, Exception
         return;
     }
 
-    if (unitType == SVGAngle::SVG_ANGLETYPE_UNKNOWN || unitType > SVGAngle::SVG_ANGLETYPE_GRAD) {
+    if (unitType == SVGAngle::SVG_ANGLETYPE_UNKNOWN || unitType > SVGAngle::SVG_ANGLETYPE_TURN) {
         exceptionState.throwDOMException(NotSupportedError, "Cannot convert to unknown or invalid units (" + String::number(unitType) + ").");
         return;
     }