Enable Oilpan for core/timing/.

Source/core/timing/MemoryInfo.h

 /*
  * Copyright (C) 2010 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MemoryInfo_h
 #define MemoryInfo_h
 
 #include "bindings/core/v8/ScriptGCEvent.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 
 namespace blink {
 
-class CORE_EXPORT MemoryInfo final : public RefCountedWillBeGarbageCollected<MemoryInfo>, public ScriptWrappable {
+class CORE_EXPORT MemoryInfo final : public GarbageCollected<MemoryInfo>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<MemoryInfo> create()
+    static MemoryInfo* create()
     {
-        return adoptRefWillBeNoop(new MemoryInfo());
+        return new MemoryInfo();
     }
 
     size_t totalJSHeapSize() const { return m_info.totalJSHeapSize; }
     size_t usedJSHeapSize() const { return m_info.usedJSHeapSize; }
     size_t jsHeapSizeLimit() const { return m_info.jsHeapSizeLimit; }
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     MemoryInfo();
 
     HeapInfo m_info;
 };
 
 CORE_EXPORT size_t quantizeMemorySize(size_t);
 
 } // namespace blink
 
 #endif // MemoryInfo_h