Add more oilpan collections support

Source/wtf/DefaultAllocator.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 89 matching lines @@
     {
         ASSERT_NOT_REACHED();
     }
 
     static void registerWeakMembers(...)
     {
         ASSERT_NOT_REACHED();
     }
 
     template<typename T, typename Traits>
-    static void mark(...)
+    static void trace(...)
     {
         ASSERT_NOT_REACHED();
     }
+
+    template<typename T>
+    struct OtherType {
+        typedef T* Type;
+    };
+
+    template<typename T>
+    static T& getOther(T* other)
+    {
+        return *other;
+    }
 };
 
 // The Windows compiler seems to be very eager to instantiate things it won't
 // need, so unless we have this class we get compile errors.
 class DefaultAllocatorDummyVisitor {
 public:
     template<typename T> inline bool isAlive(T obj)
     {
         ASSERT_NOT_REACHED();
         return false;
     }
 };
 
 } // namespace WTF
 
 using WTF::DefaultAllocator;
 
 #endif // WTF_DefaultAllocator_h