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 5d03d506b62c6953bf005dcc9baac1643bbe83a4..d5e221ad3a9ce9ba86e81df00e00b26680cf15db 100644
--- a/Source/platform/heap/ThreadState.cpp
+++ b/Source/platform/heap/ThreadState.cpp
@@ -322,8 +322,9 @@ ThreadState::ThreadState()
         s_mainThreadUnderestimatedStackSize = getUnderestimatedStackSize() - sizeof(void*);
     }
 
-    for (int heapIndex = 0; heapIndex < NumberOfHeaps; heapIndex++)
-        m_heaps[heapIndex] = new ThreadHeap(this, heapIndex);
+    for (int heapIndex = 0; heapIndex < LargeObjectHeap; heapIndex++)
+        m_heaps[heapIndex] = new ThreadHeapForHeapPage(this, heapIndex);
+    m_heaps[LargeObjectHeap] = new ThreadHeapForLargeObject(this, LargeObjectHeap);
 
     m_weakCallbackStack = new CallbackStack();
 }