CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/css/resolver/FilterOperationResolver.cpp

Index: Source/core/css/resolver/FilterOperationResolver.cpp
diff --git a/Source/core/css/resolver/FilterOperationResolver.cpp b/Source/core/css/resolver/FilterOperationResolver.cpp
index 055ae7befb5aa98a13c4e25f8cfee786e077784d..d2e4570b49c434227c281dc3715a2e25b33df23f 100644
--- a/Source/core/css/resolver/FilterOperationResolver.cpp
+++ b/Source/core/css/resolver/FilterOperationResolver.cpp
@@ -76,7 +76,7 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
     ASSERT(outOperations.isEmpty());
 
     if (inValue.isPrimitiveValue()) {
-        CSSPrimitiveValue primitiveValue = toCSSPrimitiveValue(inValue);
+        const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(inValue);
         if (primitiveValue.getValueID() == CSSValueNone)
             return true;
     }
@@ -92,7 +92,7 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
         if (operationType == FilterOperation::REFERENCE) {
             if (filterValue.length() != 1)
                 continue;
-            CSSValue argument = filterValue.item(0);
+            const CSSValue& argument = filterValue.item(0);
 
             if (!argument.isSVGDocumentValue())
                 continue;
@@ -132,8 +132,8 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
         case CSSValueSaturate: {
             double amount = 1;
             if (filterValue.length() == 1) {
-                amount = toCSSPrimitiveValue(*firstValue).getDoubleValue();
-                if (toCSSPrimitiveValue(*firstValue).isPercentage())
+                amount = toCSSPrimitiveValue(firstValue).getDoubleValue();
+                if (toCSSPrimitiveValue(firstValue).isPercentage())
                     amount /= 100;
             }
 
@@ -143,7 +143,7 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
         case CSSValueHueRotate: {
             double angle = 0;
             if (filterValue.length() == 1)
-                angle = toCSSPrimitiveValue(*firstValue).computeDegrees();
+                angle = toCSSPrimitiveValue(firstValue).computeDegrees();
 
             operations.operations().append(BasicColorMatrixFilterOperation::create(angle, operationType));
             break;
@@ -154,8 +154,8 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
         case CSSValueOpacity: {
             double amount = (filterValue.functionType() == CSSValueBrightness) ? 0 : 1;
             if (filterValue.length() == 1) {
-                amount = toCSSPrimitiveValue(*firstValue).getDoubleValue();
-                if (toCSSPrimitiveValue(*firstValue).isPercentage())
+                amount = toCSSPrimitiveValue(firstValue).getDoubleValue();
+                if (toCSSPrimitiveValue(firstValue).isPercentage())
                     amount /= 100;
             }
 
@@ -165,7 +165,7 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
         case CSSValueBlur: {
             Length stdDeviation = Length(0, Fixed);
             if (filterValue.length() >= 1)
-                stdDeviation = toCSSPrimitiveValue(*firstValue).convertToLength(conversionData);
+                stdDeviation = toCSSPrimitiveValue(firstValue).convertToLength(conversionData);
             operations.operations().append(BlurFilterOperation::create(stdDeviation));
             break;
         }
@@ -173,16 +173,16 @@ bool FilterOperationResolver::createFilterOperations(CSSValue inValue, const CSS
             if (filterValue.length() != 1)
                 return false;
 
-            CSSValue cssValue = filterValue.item(0);
+            const CSSValue& cssValue = filterValue.item(0);
             if (!cssValue.isShadowValue())
                 continue;
 
             CSSShadowValue& item = toCSSShadowValue(cssValue);
-            IntPoint location(toCSSPrimitiveValue(*item.x).computeLength<int>(conversionData), toCSSPrimitiveValue(*item.y).computeLength<int>(conversionData));
-            int blur = item.blur ? toCSSPrimitiveValue(*item.blur).computeLength<int>(conversionData) : 0;
+            IntPoint location(toCSSPrimitiveValue(item.x).computeLength<int>(conversionData), toCSSPrimitiveValue(item.y).computeLength<int>(conversionData));
+            int blur = item.blur ? toCSSPrimitiveValue(item.blur).computeLength<int>(conversionData) : 0;
             Color shadowColor = Color::black;
             if (item.color)
-                shadowColor = state.document().textLinkColors().colorFromPrimitiveValue(toCSSPrimitiveValue(*item.color), state.style()->color());
+                shadowColor = state.document().textLinkColors().colorFromPrimitiveValue(toCSSPrimitiveValue(item.color), state.style()->color());
 
             operations.operations().append(DropShadowFilterOperation::create(location, blur, shadowColor));
             break;