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

Source/core/svg/SVGAngleTearOff.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 57 matching lines @@
     commitChange();
 }
 
 void SVGAngleTearOff::newValueSpecifiedUnits(unsigned short unitType, float valueInSpecifiedUnits, ExceptionState& exceptionState)
 {
     if (isImmutable()) {
         exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
         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;
     }
 
     target()->newValueSpecifiedUnits(static_cast<SVGAngle::SVGAngleType>(unitType), valueInSpecifiedUnits);
     commitChange();
 }
 
 void SVGAngleTearOff::convertToSpecifiedUnits(unsigned short unitType, ExceptionState& exceptionState)
 {
     if (isImmutable()) {
         exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
         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;
     }
 
     target()->convertToSpecifiedUnits(static_cast<SVGAngle::SVGAngleType>(unitType), exceptionState);
     if (!exceptionState.hadException())
         commitChange();
 }
 
 void SVGAngleTearOff::setValueAsString(const String& value, ExceptionState& exceptionState)
 {
     if (isImmutable()) {
         exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
         return;
     }
 
     target()->setValueAsString(value, exceptionState);
     commitChange();
 }
 
 }