CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/css/CSSGradientValue.h

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 67 matching lines @@
 // We have to declare the VectorTraits specialization before CSSGradientValue
 // declares its inline capacity vector below.
 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::CSSGradientColorStop);
 
 namespace blink {
 
 class CSSGradientValue : public CSSImageGeneratorValue {
 public:
     PassRefPtr<Image> image(LayoutObject*, const IntSize&);
 
-    void setFirstX(NullableCSSValue val) { m_firstX = val; }
-    void setFirstY(NullableCSSValue val) { m_firstY = val; }
-    void setSecondX(NullableCSSValue val) { m_secondX = val; }
-    void setSecondY(NullableCSSValue val) { m_secondY = val; }
+    void setFirstX(NullableCSSValue val) { m_firstX = std::move(val); }
+    void setFirstY(NullableCSSValue val) { m_firstY = std::move(val); }
+    void setSecondX(NullableCSSValue val) { m_secondX = std::move(val); }
+    void setSecondY(NullableCSSValue val) { m_secondY = std::move(val); }
 
     void addStop(const CSSGradientColorStop& stop) { m_stops.append(stop); }
 
     unsigned stopCount() const { return m_stops.size(); }
 
     void appendCSSTextForDeprecatedColorStops(StringBuilder&) const;
 
     bool isRepeating() const { return m_repeating; }
 
     CSSGradientType gradientType() const { return m_gradientType; }
@@ skipping 105 matching lines @@
     PassRefPtrWillBeRawPtr<CSSRadialGradientValue> clone() const
     {
         return adoptRefWillBeNoop(new CSSRadialGradientValue(*this));
     }
 
     String customCSSText() const;
 
     void setFirstRadius(CSSPrimitiveValue val) { m_firstRadius = val; }
     void setSecondRadius(CSSPrimitiveValue val) { m_secondRadius = val; }
 
-    void setShape(NullableCSSValue val) { m_shape = val; }
-    void setSizingBehavior(NullableCSSValue val) { m_sizingBehavior = val; }
+    void setShape(NullableCSSValue val) { m_shape = std::move(val); }
+    void setSizingBehavior(NullableCSSValue val) { m_sizingBehavior = std::move(val); }
 
-    void setEndHorizontalSize(NullableCSSValue val) { m_endHorizontalSize = val; }
-    void setEndVerticalSize(NullableCSSValue val) { m_endVerticalSize = val; }
+    void setEndHorizontalSize(NullableCSSValue val) { m_endHorizontalSize = std::move(val); }
+    void setEndVerticalSize(NullableCSSValue val) { m_endVerticalSize = std::move(val); }
 
     // Create the gradient for a given size.
     PassRefPtr<Gradient> createGradient(const CSSToLengthConversionData&, const IntSize&, const LayoutObject&);
 
     bool equals(const CSSRadialGradientValue&) const;
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
     CSSRadialGradientValue(CSSGradientRepeat repeat, CSSGradientType gradientType = CSSRadialGradient)
         : CSSGradientValue(RadialGradientClass, repeat, gradientType)
     {
     }
 
     explicit CSSRadialGradientValue(const CSSRadialGradientValue& other)
         : CSSGradientValue(other, RadialGradientClass, other.gradientType())
         , m_firstRadius(other.m_firstRadius)
         , m_secondRadius(other.m_secondRadius)
         , m_shape(other.m_shape)
         , m_sizingBehavior(other.m_sizingBehavior)
         , m_endHorizontalSize(other.m_endHorizontalSize)
         , m_endVerticalSize(other.m_endVerticalSize)
     {
     }
 
 
     // Resolve points/radii to front end values.
-    float resolveRadius(CSSPrimitiveValue, const CSSToLengthConversionData&, float* widthOrHeight = 0);
+    float resolveRadius(const CSSPrimitiveValue&, const CSSToLengthConversionData&, float* widthOrHeight = 0);
 
     // These may be null for non-deprecated gradients.
     NullableCSSValue m_firstRadius;
     NullableCSSValue m_secondRadius;
 
     // The below are only used for non-deprecated gradients. Any of them may be null.
     NullableCSSValue m_shape;
     NullableCSSValue m_sizingBehavior;
 
     NullableCSSValue m_endHorizontalSize;
     NullableCSSValue m_endVerticalSize;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSRadialGradientValue, isRadialGradientValue());
 
 } // namespace blink
 
 #endif // CSSGradientValue_h