[TypeFeedbackVector] Delete unused DummySlot.

src/type-feedback-vector.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_TYPE_FEEDBACK_VECTOR_H_
 #define V8_TYPE_FEEDBACK_VECTOR_H_
 
 #include <vector>
 
 #include "src/base/logging.h"
@@ skipping 138 matching lines @@
 // 2..N: slot kinds packed into a bit vector
 //
 class TypeFeedbackMetadata : public FixedArray {
  public:
   // Casting.
   static inline TypeFeedbackMetadata* cast(Object* obj);
 
   static const int kSlotsCountIndex = 0;
   static const int kReservedIndexCount = 1;
 
-  static const int kNameTableEntrySize = 2;
-  static const int kNameTableSlotIndex = 0;
-  static const int kNameTableNameIndex = 1;
-
   // Returns number of feedback vector elements used by given slot kind.
   static inline int GetSlotSize(FeedbackVectorSlotKind kind);
 
   bool SpecDiffersFrom(const FeedbackVectorSpec* other_spec) const;
 
   bool DiffersFrom(const TypeFeedbackMetadata* other_metadata) const;
 
   inline bool is_empty() const;
 
   // Returns number of slots in the vector.
@@ skipping 103 matching lines @@
   // A raw version of the uninitialized sentinel that's safe to read during
   // garbage collection (e.g., for patching the cache).
   static inline Symbol* RawUninitializedSentinel(Isolate* isolate);
 
   static const int kDummyLoadICSlot = 0;
   static const int kDummyKeyedLoadICSlot = 2;
   static const int kDummyStoreICSlot = 4;
   static const int kDummyKeyedStoreICSlot = 6;
 
   static Handle<TypeFeedbackVector> DummyVector(Isolate* isolate);
-  static FeedbackVectorSlot DummySlot(int dummyIndex) {
-    DCHECK(dummyIndex >= 0 && dummyIndex <= kDummyKeyedStoreICSlot);
-    return FeedbackVectorSlot(dummyIndex);
-  }
 
  private:
   void ClearSlotsImpl(SharedFunctionInfo* shared, bool force_clear);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TypeFeedbackVector);
 };
 
 
 // The following asserts protect an optimization in type feedback vector
 // code that looks into the contents of a slot assuming to find a String,
@@ skipping 375 matching lines @@
   }
 };
 
 inline BinaryOperationHint BinaryOperationHintFromFeedback(int type_feedback);
 inline CompareOperationHint CompareOperationHintFromFeedback(int type_feedback);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TRANSITIONS_H_