CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/animation/LengthBoxStyleInterpolation.cpp

Index: Source/core/animation/LengthBoxStyleInterpolation.cpp
diff --git a/Source/core/animation/LengthBoxStyleInterpolation.cpp b/Source/core/animation/LengthBoxStyleInterpolation.cpp
index d3f9724e1867193e91daf3828fa0f84a7360b693..9cf42b9d8e538223c67681e0057e3ca8a7234708 100644
--- a/Source/core/animation/LengthBoxStyleInterpolation.cpp
+++ b/Source/core/animation/LengthBoxStyleInterpolation.cpp
@@ -21,7 +21,7 @@ bool onlyInterpolateBetweenLengthAndCSSValueAuto(Rect& startRect, Rect& endRect)
 
 } // namespace
 
-PassRefPtrWillBeRawPtr<LengthBoxStyleInterpolation> LengthBoxStyleInterpolation::maybeCreateFrom(CSSValue& start, CSSValue& end, CSSPropertyID id)
+PassRefPtrWillBeRawPtr<LengthBoxStyleInterpolation> LengthBoxStyleInterpolation::maybeCreateFrom(const CSSValue& start, const CSSValue& end, CSSPropertyID id)
 {
     bool startRect = start.isPrimitiveValue() && toCSSPrimitiveValue(start).isRect();
     bool endRect = end.isPrimitiveValue() && toCSSPrimitiveValue(end).isRect();
@@ -37,8 +37,8 @@ PassOwnPtrWillBeRawPtr<InterpolableValue> LengthBoxStyleInterpolation::lengthBox
     OwnPtrWillBeRawPtr<InterpolableList> result = InterpolableList::create(numberOfSides);
     Rect* rect = toCSSPrimitiveValue(lengthBox).getRectValue();
     Rect* matchingRect = toCSSPrimitiveValue(matchingValue).getRectValue();
-    CSSPrimitiveValue side[numberOfSides] = { rect->left(), rect->right(), rect->top(), rect->bottom() };
-    CSSPrimitiveValue matchingSide[numberOfSides] = { matchingRect->left(), matchingRect->right(), matchingRect->top(), matchingRect->bottom() };
+    const CSSPrimitiveValue side[numberOfSides] = { rect->left(), rect->right(), rect->top(), rect->bottom() };
+    const CSSPrimitiveValue matchingSide[numberOfSides] = { matchingRect->left(), matchingRect->right(), matchingRect->top(), matchingRect->bottom() };
 
     for (size_t i = 0; i < numberOfSides; i++) {
         if (side[i].isValueID() || matchingSide[i].isValueID()) {
@@ -56,8 +56,8 @@ bool LengthBoxStyleInterpolation::usesDefaultInterpolation(const CSSValue& start
 {
     if (!start.isPrimitiveValue() || !end.isPrimitiveValue())
         return false;
-    const CSSPrimitiveValue startValue = toCSSPrimitiveValue(start);
-    const CSSPrimitiveValue endValue = toCSSPrimitiveValue(end);
+    const CSSPrimitiveValue& startValue = toCSSPrimitiveValue(start);
+    const CSSPrimitiveValue& endValue = toCSSPrimitiveValue(end);
     if ((startValue.isValueID() && startValue.getValueID() == CSSValueAuto)
         || (endValue.isValueID() && endValue.getValueID() == CSSValueAuto))
         return true;
@@ -66,7 +66,7 @@ bool LengthBoxStyleInterpolation::usesDefaultInterpolation(const CSSValue& start
 
 namespace {
 
-CSSPrimitiveValue indexedValueToLength(InterpolableList& lengthBox, size_t i, CSSPrimitiveValue start[], CSSPrimitiveValue end[])
+const CSSPrimitiveValue indexedValueToLength(InterpolableList& lengthBox, size_t i, const CSSPrimitiveValue start[], const CSSPrimitiveValue end[])
 {
     if (lengthBox.get(i)->isBool()) {
         if (toInterpolableBool(lengthBox.get(i))->value())
@@ -83,8 +83,8 @@ CSSValue LengthBoxStyleInterpolation::interpolableValueToLengthBox(InterpolableV
     InterpolableList* lengthBox = toInterpolableList(value);
     Rect* startRect = toCSSPrimitiveValue(originalStart).getRectValue();
     Rect* endRect = toCSSPrimitiveValue(originalEnd).getRectValue();
-    CSSPrimitiveValue startSides[4] = { startRect->left(), startRect->right(), startRect->top(), startRect->bottom() };
-    CSSPrimitiveValue endSides[4] = { endRect->left(), endRect->right(), endRect->top(), endRect->bottom() };
+    const CSSPrimitiveValue startSides[4] = { startRect->left(), startRect->right(), startRect->top(), startRect->bottom() };
+    const CSSPrimitiveValue endSides[4] = { endRect->left(), endRect->right(), endRect->top(), endRect->bottom() };
     RefPtrWillBeRawPtr<Rect> result = Rect::create();
 
     result->setLeft(indexedValueToLength(*lengthBox, 0, startSides, endSides));