Oilpan: move WorkerGlobalScope to oilpan's heap.

Source/heap/Heap.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 1343 matching lines @@
     static const ThreadAffinity Affinity = ThreadingTrait<T>::Affinity;
 };
 
 template<typename Key, typename Value, typename T, typename U, typename V>
 struct ThreadingTrait<HashMap<Key, Value, HeapAllocator, T, U, V> > {
     static const ThreadAffinity Affinity =
         (ThreadingTrait<Key>::Affinity == MainThreadOnly)
         && (ThreadingTrait<Value>::Affinity == MainThreadOnly) ? MainThreadOnly : AnyThread;
 };
 
+template<typename First, typename Second>
+struct ThreadingTrait<WTF::KeyValuePair<First, Second> > {
+    static const ThreadAffinity Affinity =
+        (ThreadingTrait<First>::Affinity == MainThreadOnly)
+        && (ThreadingTrait<Second>::Affinity == MainThreadOnly) ? MainThreadOnly : AnyThread;
+};
+
 template<typename T, typename U, typename V>
 struct ThreadingTrait<HashSet<T, HeapAllocator, U, V> > {
     static const ThreadAffinity Affinity = ThreadingTrait<T>::Affinity;
 };
 
 
 template<typename T, size_t inlineCapacity>
 struct ThreadingTrait<Vector<T, inlineCapacity, HeapAllocator> > {
     static const ThreadAffinity Affinity = ThreadingTrait<T>::Affinity;
 };
@@ skipping 309 matching lines @@
 // to export. This forces it to export all the methods from ThreadHeap.
 template<> void ThreadHeap<FinalizedHeapObjectHeader>::addPageToHeap(const GCInfo*);
 template<> void ThreadHeap<HeapObjectHeader>::addPageToHeap(const GCInfo*);
 extern template class HEAP_EXPORT ThreadHeap<FinalizedHeapObjectHeader>;
 extern template class HEAP_EXPORT ThreadHeap<HeapObjectHeader>;
 #endif
 
 }
 
 #endif // Heap_h