Revert "Oilpan: Expand HashTableBacking buffer when possible"

Source/platform/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 1486 matching lines @@
     static T* allocateHashTableBacking(size_t size)
     {
         return reinterpret_cast<T*>(Heap::allocate<HeapHashTableBacking<HashTable>, HeapIndexTrait<HashTableBackingHeap>>(size));
     }
     template <typename T, typename HashTable>
     static T* allocateZeroedHashTableBacking(size_t size)
     {
         return allocateHashTableBacking<T, HashTable>(size);
     }
     PLATFORM_EXPORT static void freeHashTableBacking(void* address);
-    PLATFORM_EXPORT static bool expandHashTableBacking(void*, size_t);
 
     template <typename Return, typename Metadata>
     static Return malloc(size_t size)
     {
         return reinterpret_cast<Return>(Heap::allocate<Metadata>(size));
     }
     static void free(void* address) { }
     template<typename T>
     static void* newArray(size_t bytes)
     {
@@ skipping 909 matching lines @@
 template<typename T, size_t inlineCapacity>
 struct GCInfoTrait<HeapVector<T, inlineCapacity>> : public GCInfoTrait<Vector<T, inlineCapacity, HeapAllocator>> { };
 template<typename T, size_t inlineCapacity>
 struct GCInfoTrait<HeapDeque<T, inlineCapacity>> : public GCInfoTrait<Deque<T, inlineCapacity, HeapAllocator>> { };
 template<typename T, typename U, typename V>
 struct GCInfoTrait<HeapHashCountedSet<T, U, V>> : public GCInfoTrait<HashCountedSet<T, U, V, HeapAllocator>> { };
 
 } // namespace blink
 
 #endif // Heap_h