Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/core/testing/MallocStatistics.h

 /*
  * Copyright (C) 2012 SoftAtHome. 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
@@ skipping 16 matching lines @@
 #define MallocStatistics_h
 
 #include "heap/Handle.h"
 #include "wtf/FastMalloc.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class MallocStatistics : public RefCountedWillBeGarbageCollected<MallocStatistics> {
-    DECLARE_GC_INFO;
 public:
     static PassRefPtrWillBeRawPtr<MallocStatistics> create()
     {
         return adoptRefWillBeNoop(new MallocStatistics());
     }
 
     size_t reservedVMBytes() const { return m_stats.reservedVMBytes; }
     size_t committedVMBytes() const { return m_stats.committedVMBytes; }
     size_t freeListBytes() const { return m_stats.freeListBytes; }
 
     void trace(Visitor*) { }
 
 private:
     MallocStatistics()
     {
         m_stats = WTF::fastMallocStatistics();
     }
 
     WTF::FastMallocStatistics m_stats;
 };
 
 } // namespace WebCore
 
 #endif