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diff --git a/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h b/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h
deleted file mode 100644
index 31492b614..000000000
--- a/Source/JavaScriptCore/jit/PolymorphicCallStubRoutine.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright (C) 2015 Apple 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
- */
-
-#ifndef PolymorphicCallStubRoutine_h
-#define PolymorphicCallStubRoutine_h
-
-#if ENABLE(JIT)
-
-#include "CallEdge.h"
-#include "CallVariant.h"
-#include "CodeOrigin.h"
-#include "GCAwareJITStubRoutine.h"
-#include <wtf/FastMalloc.h>
-#include <wtf/Noncopyable.h>
-#include <wtf/Vector.h>
-
-namespace JSC {
-
-class CallLinkInfo;
-
-class PolymorphicCallNode : public BasicRawSentinelNode<PolymorphicCallNode> {
-    WTF_MAKE_NONCOPYABLE(PolymorphicCallNode);
-public:
-    PolymorphicCallNode(CallLinkInfo* info)
-        : m_callLinkInfo(info)
-    {
-    }
-    
-    ~PolymorphicCallNode();
-    
-    void unlink(RepatchBuffer&);
-
-    bool hasCallLinkInfo(CallLinkInfo* info) { return m_callLinkInfo == info; }
-    void clearCallLinkInfo();
-    
-private:
-    CallLinkInfo* m_callLinkInfo;
-};
-
-class PolymorphicCallCase {
-public:
-    PolymorphicCallCase()
-        : m_codeBlock(nullptr)
-    {
-    }
-    
-    PolymorphicCallCase(CallVariant variant, CodeBlock* codeBlock)
-        : m_variant(variant)
-        , m_codeBlock(codeBlock)
-    {
-    }
-    
-    CallVariant variant() const { return m_variant; }
-    CodeBlock* codeBlock() const { return m_codeBlock; }
-    
-    void dump(PrintStream&) const;
-    
-private:
-    CallVariant m_variant;
-    CodeBlock* m_codeBlock;
-};
-
-class PolymorphicCallStubRoutine : public GCAwareJITStubRoutine {
-public:
-    PolymorphicCallStubRoutine(
-        const MacroAssemblerCodeRef&, VM&, const JSCell* owner,
-        ExecState* callerFrame, CallLinkInfo&, const Vector<PolymorphicCallCase>&,
-        std::unique_ptr<uint32_t[]> fastCounts);
-    
-    virtual ~PolymorphicCallStubRoutine();
-    
-    CallVariantList variants() const;
-    CallEdgeList edges() const;
-
-    void clearCallNodesFor(CallLinkInfo*);
-    
-    bool visitWeak(RepatchBuffer&) override;
-
-protected:
-    virtual void markRequiredObjectsInternal(SlotVisitor&) override;
-
-private:
-    Vector<WriteBarrier<JSCell>, 2> m_variants;
-    std::unique_ptr<uint32_t[]> m_fastCounts;
-    Bag<PolymorphicCallNode> m_callNodes;
-};
-
-} // namespace JSC
-
-#endif // ENABLE(JIT)
-
-#endif // PolymorphicCallStubRoutine_h
-