Revert of Oilpan: Remove duplicated code between HeapPage and LargeObject

Source/platform/heap/ThreadState.cpp

Index: Source/platform/heap/ThreadState.cpp
diff --git a/Source/platform/heap/ThreadState.cpp b/Source/platform/heap/ThreadState.cpp
index 20e2d4393b9c57107a8668fc7dda40235903c7a6..3e4ff131120e4b73a42a5134c121f1ec21a49b4f 100644
--- a/Source/platform/heap/ThreadState.cpp
+++ b/Source/platform/heap/ThreadState.cpp
@@ -308,9 +308,8 @@
         s_mainThreadUnderestimatedStackSize = StackFrameDepth::getUnderestimatedStackSize() - sizeof(void*);
     }
 
-    for (int heapIndex = 0; heapIndex < LargeObjectHeap; heapIndex++)
-        m_heaps[heapIndex] = new ThreadHeapForHeapPage(this, heapIndex);
-    m_heaps[LargeObjectHeap] = new ThreadHeapForLargeObject(this, LargeObjectHeap);
+    for (int heapIndex = 0; heapIndex < NumberOfHeaps; heapIndex++)
+        m_heaps[heapIndex] = new ThreadHeap(this, heapIndex);
 
     m_weakCallbackStack = new CallbackStack();
 }