Revert of [Oilpan]: Moving the FontSelector/FontCacheClient, CSSSegmentedFontFace...

Source/platform/heap/Heap.h

Index: Source/platform/heap/Heap.h
diff --git a/Source/platform/heap/Heap.h b/Source/platform/heap/Heap.h
index 9e494538c5b81738332f4f83594f5023d45f9313..625573c5915ebd1b92d352861d166aa0e69f5478 100644
--- a/Source/platform/heap/Heap.h
+++ b/Source/platform/heap/Heap.h
@@ -878,18 +878,7 @@
 
     // For now direct allocation of arrays on the heap is not allowed.
     void* operator new[](size_t size);
-#if OS(WIN) && COMPILER(MSVC)
-    // Due to some quirkiness in the MSVC compiler we have to provide
-    // the delete[] operator in the GarbageCollected subclasses as it
-    // is called when a class is exported in a DLL.
-protected:
-    void operator delete[](void* p)
-    {
-        ASSERT_NOT_REACHED();
-    }
-#else
     void operator delete[](void* p);
-#endif
 public:
     typedef T GarbageCollectedBase;