Oilpan: like Vector<T>, restrict Deque<T> to certain part objects.

Source/wtf/Deque.h

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 207 matching lines @@
         // postfix ++ intentionally omitted
         Iterator& operator--() { Base::decrement(); return *this; }
         // postfix -- intentionally omitted
     };
 
     template<typename T, size_t inlineCapacity, typename Allocator>
     inline Deque<T, inlineCapacity, Allocator>::Deque()
         : m_start(0)
         , m_end(0)
     {
+        static_assert(!IsPolymorphic<T>::value || !VectorTraits<T>::canInitializeWithMemset, "Cannot initialize with memset if there is a vtable");
+#if ENABLE(OILPAN)
+        static_assert(Allocator::isGarbageCollected || !IsAllowOnlyInlineAllocation<T>::value || !NeedsTracing<T>::value, "Cannot put ALLOW_ONLY_INLINE_ALLOCATION objects that have trace methods into an off-heap Deque");
+#endif
     }
 
     template<typename T, size_t inlineCapacity, typename Allocator>
     inline Deque<T, inlineCapacity, Allocator>::Deque(const Deque<T, inlineCapacity, Allocator>& other)
         : m_buffer(other.m_buffer.capacity())
         , m_start(other.m_start)
         , m_end(other.m_end)
     {
         const T* otherBuffer = other.m_buffer.buffer();
         if (m_start <= m_end)
@@ skipping 327 matching lines @@
     struct NeedsTracing<Deque<T, N>> {
         static const bool value = false;
     };
 #endif
 
 } // namespace WTF
 
 using WTF::Deque;
 
 #endif // WTF_Deque_h