Layout support for new circle shape syntax

Source/core/css/BasicShapeFunctions.h

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 12 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #ifndef BasicShapeFunctions_h
 #define BasicShapeFunctions_h
 
+#include "core/rendering/style/BasicShapes.h"
 #include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
 class BasicShape;
 class CSSBasicShape;
 class CSSValue;
 class StyleResolverState;
 class RenderStyle;
 
 PassRefPtr<CSSValue> valueForBasicShape(const RenderStyle&, const BasicShape*);
 PassRefPtr<BasicShape> basicShapeForValue(const StyleResolverState&, const CSSBasicShape*);
+float floatValueForCenterCoordinate(const BasicShapeCenterCoordinate&, float);
 
 }
 #endif