Split CSSPrimitiveValue into CSSPrimitiveValue and CSSIdentifierValue

third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp

Index: third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp
diff --git a/third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp b/third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp
index 018a6821534df630fc239fa04035b19310b75991..0ee2b2096d383150c22d11b6852a44489e3ab6bf 100644
--- a/third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp
+++ b/third_party/WebKit/Source/core/animation/CSSColorInterpolationType.cpp
@@ -6,6 +6,7 @@
 
 #include "core/animation/ColorPropertyFunctions.h"
 #include "core/css/CSSColorValue.h"
+#include "core/css/CSSIdentifierValue.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/layout/LayoutTheme.h"
 #include "wtf/PtrUtil.h"
@@ -78,14 +79,12 @@ std::unique_ptr<InterpolableValue> CSSColorInterpolationType::maybeCreateInterpo
 {
     if (value.isColorValue())
         return createInterpolableColor(toCSSColorValue(value).value());
-    if (!value.isPrimitiveValue())
+    if (!value.isIdentifierValue())
         return nullptr;
-    const CSSPrimitiveValue& primitive = toCSSPrimitiveValue(value);
-    if (!primitive.isValueID())
+    const CSSIdentifierValue& identifierValue = toCSSIdentifierValue(value);
+    if (!StyleColor::isColorKeyword(identifierValue.getValueID()))
         return nullptr;
-    if (!StyleColor::isColorKeyword(primitive.getValueID()))
-        return nullptr;
-    return createInterpolableColor(primitive.getValueID());
+    return createInterpolableColor(identifierValue.getValueID());
 }
 
 static void addPremultipliedColor(double& red, double& green, double& blue, double& alpha, double fraction, const Color& color)
@@ -186,7 +185,7 @@ enum InterpolableColorPairIndex : unsigned {
 
 InterpolationValue CSSColorInterpolationType::maybeConvertValue(const CSSValue& value, const StyleResolverState& state, ConversionCheckers& conversionCheckers) const
 {
-    if (cssProperty() == CSSPropertyColor && value.isPrimitiveValue() && toCSSPrimitiveValue(value).getValueID() == CSSValueCurrentcolor)
+    if (cssProperty() == CSSPropertyColor && value.isIdentifierValue() && toCSSIdentifierValue(value).getValueID() == CSSValueCurrentcolor)
         return maybeConvertInherit(state, conversionCheckers);
 
     std::unique_ptr<InterpolableValue> interpolableColor = maybeCreateInterpolableColor(value);