CSSValue Immediates: Change CSSValue to an object instead of a pointer

Source/core/css/BasicShapeFunctions.cpp

 /*
  * 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 47 matching lines @@
     case BasicShapeRadius::ClosestSide:
         return pool.createIdentifierValue(CSSValueClosestSide);
     case BasicShapeRadius::FarthestSide:
         return pool.createIdentifierValue(CSSValueFarthestSide);
     }
 
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> valueForBasicShape(const ComputedStyle& style, const BasicShape* basicShape)
+CSSValue valueForBasicShape(const ComputedStyle& style, const BasicShape* basicShape)
 {
     CSSValuePool& pool = cssValuePool();
 
     RefPtrWillBeRawPtr<CSSBasicShape> basicShapeValue = nullptr;
     switch (basicShape->type()) {
     case BasicShape::BasicShapeCircleType: {
         const BasicShapeCircle* circle = toBasicShapeCircle(basicShape);
         RefPtrWillBeRawPtr<CSSBasicShapeCircle> circleValue = CSSBasicShapeCircle::create();
 
         circleValue->setCenterX(valueForCenterCoordinate(pool, style, circle->centerX(), HORIZONTAL));
@@ skipping 36 matching lines @@
 
         insetValue->setTopLeftRadius(CSSPrimitiveValue::create(inset->topLeftRadius(), style));
         insetValue->setTopRightRadius(CSSPrimitiveValue::create(inset->topRightRadius(), style));
         insetValue->setBottomRightRadius(CSSPrimitiveValue::create(inset->bottomRightRadius(), style));
         insetValue->setBottomLeftRadius(CSSPrimitiveValue::create(inset->bottomLeftRadius(), style));
 
         basicShapeValue = insetValue.release();
         break;
     }
     default:
+        ASSERT_NOT_REACHED();
         break;
     }
 
     return pool.createValue(basicShapeValue.release());
 }
 
 static Length convertToLength(const StyleResolverState& state, CSSPrimitiveValue* value)
 {
     if (!value)
         return Length(0, Fixed);
@@ skipping 133 matching lines @@
 }
 
 FloatPoint floatPointForCenterCoordinate(const BasicShapeCenterCoordinate& centerX, const BasicShapeCenterCoordinate& centerY, FloatSize boxSize)
 {
     float x = floatValueForLength(centerX.computedLength(), boxSize.width());
     float y = floatValueForLength(centerY.computedLength(), boxSize.height());
     return FloatPoint(x, y);
 }
 
 }