Add forEach() to CSSVariablesMap

Source/core/css/CSSVariablesMap.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 11 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef CSSVariablesMap_h
 #define CSSVariablesMap_h
 
 #include "RuntimeEnabledFeatures.h"
+#include "core/css/CSSVariablesMapForEachCallback.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class CSSStyleDeclaration;
+class CSSVariablesIterator;
 class ExceptionState;
 
 class CSSVariablesMap : public RefCounted<CSSVariablesMap> {
 public:
     virtual ~CSSVariablesMap() { }
 
     static PassRefPtr<CSSVariablesMap> create(CSSStyleDeclaration* styleDeclaration)
     {
         return adoptRef(new CSSVariablesMap(styleDeclaration));
     }
 
     unsigned size() const;
     String get(const AtomicString& name) const;
     bool has(const AtomicString& name) const;
-    void set(const AtomicString& name, const String& value, ExceptionState&) const;
-    bool remove(const AtomicString& name) const;
-    void clear(ExceptionState&) const;
+    void set(const AtomicString& name, const String& value, ExceptionState&);
+    bool remove(const AtomicString& name);
+    void clear(ExceptionState&);
+    void forEach(PassRefPtr<CSSVariablesMapForEachCallback>, ScriptValue& thisArg) const;
+    void forEach(PassRefPtr<CSSVariablesMapForEachCallback>) const;
 
     void clearStyleDeclaration() { m_styleDeclaration = 0; }
 
 private:
     explicit CSSVariablesMap(CSSStyleDeclaration* styleDeclaration)
         : m_styleDeclaration(styleDeclaration)
     {
         ASSERT(RuntimeEnabledFeatures::cssVariablesEnabled());
     }
 
+    void forEach(PassRefPtr<CSSVariablesMapForEachCallback>, ScriptValue* thisArg) const;
+
     CSSStyleDeclaration* m_styleDeclaration;
+    typedef Vector<CSSVariablesIterator*> Iterators;
+    mutable Iterators m_activeIterators;
 };
 
 } // namespace WebCore
 
 #endif // CSSVariablesMap_h