CSSValue Immediates: Replace CSSPrimitiveValue usage with const references

Source/core/css/Counter.h

Index: Source/core/css/Counter.h
diff --git a/Source/core/css/Counter.h b/Source/core/css/Counter.h
index cb253377a62c516c6f48b798dd16eb690fbea963..8b40a9de61af4d7cbe6480567b23c1514e2e407e 100644
--- a/Source/core/css/Counter.h
+++ b/Source/core/css/Counter.h
@@ -28,7 +28,7 @@ namespace blink {
 
 class Counter : public RefCountedWillBeGarbageCollectedFinalized<Counter> {
 public:
-    static PassRefPtrWillBeRawPtr<Counter> create(CSSPrimitiveValue identifier, CSSPrimitiveValue listStyle, CSSPrimitiveValue separator)
+    static PassRefPtrWillBeRawPtr<Counter> create(const CSSPrimitiveValue& identifier, const CSSPrimitiveValue& listStyle, const CSSPrimitiveValue& separator)
     {
         return adoptRefWillBeNoop(new Counter(identifier, listStyle, separator));
     }
@@ -39,9 +39,9 @@ public:
 
     CSSValueID listStyleIdent() const { return toCSSPrimitiveValue(m_listStyle).getValueID(); }
 
-    void setIdentifier(CSSPrimitiveValue identifier) { m_identifier = identifier; }
-    void setListStyle(CSSPrimitiveValue listStyle) { m_listStyle = listStyle; }
-    void setSeparator(CSSPrimitiveValue separator) { m_separator = separator; }
+    void setIdentifier(const CSSPrimitiveValue& identifier) { m_identifier = identifier; }
+    void setListStyle(const CSSPrimitiveValue& listStyle) { m_listStyle = listStyle; }
+    void setSeparator(const CSSPrimitiveValue& separator) { m_separator = separator; }
 
     bool equals(const Counter& other) const
     {
@@ -53,7 +53,7 @@ public:
     DECLARE_TRACE();
 
 private:
-    Counter(CSSPrimitiveValue identifier, CSSPrimitiveValue listStyle, CSSPrimitiveValue separator)
+    Counter(const CSSPrimitiveValue& identifier, const CSSPrimitiveValue& listStyle, const CSSPrimitiveValue& separator)
         : m_identifier(identifier)
         , m_listStyle(listStyle)
         , m_separator(separator) { }