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

Source/core/css/resolver/ViewportStyleResolver.cpp

Index: Source/core/css/resolver/ViewportStyleResolver.cpp
diff --git a/Source/core/css/resolver/ViewportStyleResolver.cpp b/Source/core/css/resolver/ViewportStyleResolver.cpp
index 5d47d3a59ca32111d1fb2d7d19d27f2659950e8f..23f0dae69ac0ee309a4f8fbb106fe1a4c1cb2665 100644
--- a/Source/core/css/resolver/ViewportStyleResolver.cpp
+++ b/Source/core/css/resolver/ViewportStyleResolver.cpp
@@ -137,11 +137,11 @@ float ViewportStyleResolver::viewportArgumentValue(CSSPropertyID id) const
     if (id == CSSPropertyUserZoom)
         defaultValue = 1;
 
-    RefPtrWillBeRawPtr<CSSValue> value = m_propertySet->getPropertyCSSValue(id);
+    NullableCSSValue value = m_propertySet->getPropertyCSSValue(id);
     if (!value || !value->isPrimitiveValue())
         return defaultValue;
 
-    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value.get());
+    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
 
     if (primitiveValue->isNumber() || primitiveValue->isPx())
         return primitiveValue->getFloatValue();
@@ -187,11 +187,11 @@ Length ViewportStyleResolver::viewportLengthValue(CSSPropertyID id) const
         || id == CSSPropertyMaxWidth
         || id == CSSPropertyMinWidth);
 
-    RefPtrWillBeRawPtr<CSSValue> value = m_propertySet->getPropertyCSSValue(id);
+    NullableCSSValue value = m_propertySet->getPropertyCSSValue(id);
     if (!value || !value->isPrimitiveValue())
         return Length(); // auto
 
-    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value.get());
+    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
 
     if (primitiveValue->getValueID() == CSSValueInternalExtendToZoom)
         return Length(ExtendToZoom);