Only check for on-heap Member<T>s iff T is in scope.

Source/platform/heap/Handle.h

 /*
  * Copyright (C) 2014 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 754 matching lines @@
     }
 
     T* get() const { return m_raw; }
 
     void clear() { m_raw = nullptr; }
 
 
 protected:
     void checkPointer()
     {
-#if ENABLE(ASSERT)
+#if ENABLE(ASSERT) && !OS(WIN)

[haraken, 2015/06/29 22:23:51]

Shall we add a comment?

         if (!m_raw)
             return;
         // HashTable can store a special value (which is not aligned to the
         // allocation granularity) to Member<> to represent a deleted entry.
         // Thus we treat a pointer that is not aligned to the granularity
         // as a valid pointer.
         if (reinterpret_cast<intptr_t>(m_raw) % allocationGranularity)
             return;
 
         // TODO(haraken): What we really want to check here is that the pointer
@@ skipping 501 matching lines @@
 struct ParamStorageTraits<RawPtr<T>> : public PointerParamStorageTraits<T*, blink::IsGarbageCollectedType<T>::value> {
     static_assert(sizeof(T), "T must be fully defined");
 };
 
 template<typename T>
 PassRefPtr<T> adoptRef(blink::RefCountedGarbageCollected<T>*) = delete;
 
 } // namespace WTF
 
 #endif