CSSValue Immediates: Add move operators to CSSPrimitiveValue

Source/core/css/resolver/StyleBuilderConverter.h

Index: Source/core/css/resolver/StyleBuilderConverter.h
diff --git a/Source/core/css/resolver/StyleBuilderConverter.h b/Source/core/css/resolver/StyleBuilderConverter.h
index acbcea55a1672f105989a972952aae9daf57c88a..8bbc55cb44189e3ca85a9ee9e6165f2ae3dfb994 100644
--- a/Source/core/css/resolver/StyleBuilderConverter.h
+++ b/Source/core/css/resolver/StyleBuilderConverter.h
@@ -89,11 +89,11 @@ public:
     static float convertSpacing(StyleResolverState&, const CSSValue&);
     template <CSSValueID IdForNone> static AtomicString convertString(StyleResolverState&, const CSSValue&);
     static PassRefPtr<SVGDashArray> convertStrokeDasharray(StyleResolverState&, const CSSValue&);
-    static StyleColor convertStyleColor(StyleResolverState&, CSSValue, bool forVisitedLink = false);
+    static StyleColor convertStyleColor(StyleResolverState&, const CSSValue&, bool forVisitedLink = false);
     static float convertTextStrokeWidth(StyleResolverState&, const CSSValue&);
     static TransformOrigin convertTransformOrigin(StyleResolverState&, const CSSValue&);
 
-    static bool convertGridTrackList(CSSValue, Vector<GridTrackSize>&, NamedGridLinesMap&, OrderedNamedGridLines&, StyleResolverState&);
+    static bool convertGridTrackList(const CSSValue&, Vector<GridTrackSize>&, NamedGridLinesMap&, OrderedNamedGridLines&, StyleResolverState&);
     static void createImplicitNamedGridLinesFromGridArea(const NamedGridAreaMap&, NamedGridLinesMap&, GridTrackSizingDirection);
     static void convertOrderedNamedGridLinesMapToNamedGridLinesMap(const OrderedNamedGridLines&, NamedGridLinesMap&);
 
@@ -125,7 +125,7 @@ T StyleBuilderConverter::convertFlags(StyleResolverState& state, const CSSValue&
 template <typename T>
 T StyleBuilderConverter::convertLineWidth(StyleResolverState& state, const CSSValue& value)
 {
-    CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
+    const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
     CSSValueID valueID = primitiveValue.getValueID();
     if (valueID == CSSValueThin)
         return 1;
@@ -151,7 +151,7 @@ T StyleBuilderConverter::convertLineWidth(StyleResolverState& state, const CSSVa
 template <CSSValueID IdForNone>
 AtomicString StyleBuilderConverter::convertString(StyleResolverState&, const CSSValue& value)
 {
-    CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
+    const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
     if (primitiveValue.getValueID() == IdForNone)
         return nullAtom;
     return AtomicString(primitiveValue.getStringValue());