Oilpan: move DOM string collection objects to the Oilpan heap.

Source/core/dom/DOMStringMap.h

 /*
  * Copyright (C) 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DOMStringMap_h
 #define DOMStringMap_h
 
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/ScriptWrappable.h"
 #include "bindings/v8/V8Binding.h"
+#include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class Element;
 
-class DOMStringMap : public ScriptWrappable {
-    WTF_MAKE_NONCOPYABLE(DOMStringMap); WTF_MAKE_FAST_ALLOCATED;
+class DOMStringMap : public NoBaseWillBeGarbageCollectedFinalized<DOMStringMap>, public ScriptWrappable {
+    WTF_MAKE_NONCOPYABLE(DOMStringMap);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     virtual ~DOMStringMap();
 
+#if !ENABLE(OILPAN)
     virtual void ref() = 0;
     virtual void deref() = 0;
+#endif
 
     virtual void getNames(Vector<String>&) = 0;
     virtual String item(const String& name) = 0;
     virtual bool contains(const String& name) = 0;
     virtual void setItem(const String& name, const String& value, ExceptionState&) = 0;
     virtual bool deleteItem(const String& name) = 0;
     bool anonymousNamedSetter(const String& name, const String& value, ExceptionState& exceptionState)
     {
         setItem(name, value, exceptionState);
         return true;
@@ skipping 17 matching lines @@
     {
         return anonymousNamedSetter(String::number(index), value, exceptionState);
     }
     DeleteResult anonymousIndexedDeleter(uint32_t index)
     {
         return anonymousNamedDeleter(AtomicString::number(index));
     }
 
     virtual Element* element() = 0;
 
+    virtual void trace(Visitor*) { }
+
 protected:
     DOMStringMap()
     {
         ScriptWrappable::init(this);
     }
 };
 
 } // namespace WebCore
 
 #endif // DOMStringMap_h