Consistently use only one of virtual/OVERRIDE/FINAL.

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/checks.h"
@@ skipping 274 matching lines @@
     DCHECK(vector->GetKind(slot) == Code::CALL_IC);
   }
 
   void Clear(Code* host);
 
   void ConfigureUninitialized();
   void ConfigureGeneric();
   void ConfigureMonomorphicArray();
   void ConfigureMonomorphic(Handle<JSFunction> function);
 
-  virtual InlineCacheState StateFromFeedback() const OVERRIDE;
+  InlineCacheState StateFromFeedback() const OVERRIDE;
 
-  virtual int ExtractMaps(MapHandleList* maps) const OVERRIDE {
+  int ExtractMaps(MapHandleList* maps) const OVERRIDE {
     // CallICs don't record map feedback.
     return 0;
   }
-  virtual MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE {
+  MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE {
     return MaybeHandle<Code>();
   }
   virtual bool FindHandlers(CodeHandleList* code_list,
                             int length = -1) const OVERRIDE {
     return length == 0;
   }
 };
 
 
 class LoadICNexus : public FeedbackNexus {
  public:
   LoadICNexus(Handle<TypeFeedbackVector> vector, FeedbackVectorICSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::LOAD_IC);
   }
   LoadICNexus(TypeFeedbackVector* vector, FeedbackVectorICSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::LOAD_IC);
   }
 
   void Clear(Code* host);
 
   void ConfigureMegamorphic();
   void ConfigurePremonomorphic();
   void ConfigureMonomorphic(Handle<HeapType> type, Handle<Code> handler);
 
   void ConfigurePolymorphic(TypeHandleList* types, CodeHandleList* handlers);
 
-  virtual InlineCacheState StateFromFeedback() const OVERRIDE;
-  virtual int ExtractMaps(MapHandleList* maps) const OVERRIDE;
-  virtual MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE;
+  InlineCacheState StateFromFeedback() const OVERRIDE;
+  int ExtractMaps(MapHandleList* maps) const OVERRIDE;
+  MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE;
   virtual bool FindHandlers(CodeHandleList* code_list,
                             int length = -1) const OVERRIDE;
 };
 
 
 class KeyedLoadICNexus : public FeedbackNexus {
  public:
   KeyedLoadICNexus(Handle<TypeFeedbackVector> vector, FeedbackVectorICSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::KEYED_LOAD_IC);
   }
   KeyedLoadICNexus(TypeFeedbackVector* vector, FeedbackVectorICSlot slot)
       : FeedbackNexus(vector, slot) {
     DCHECK(vector->GetKind(slot) == Code::KEYED_LOAD_IC);
   }
 
   void Clear(Code* host);
 
   void ConfigureMegamorphic();
   void ConfigureGeneric();
   void ConfigurePremonomorphic();
   // name can be a null handle for element loads.
   void ConfigureMonomorphic(Handle<Name> name, Handle<HeapType> type,
                             Handle<Code> handler);
   // name can be null.
   void ConfigurePolymorphic(Handle<Name> name, TypeHandleList* types,
                             CodeHandleList* handlers);
 
-  virtual InlineCacheState StateFromFeedback() const OVERRIDE;
-  virtual int ExtractMaps(MapHandleList* maps) const OVERRIDE;
-  virtual MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE;
+  InlineCacheState StateFromFeedback() const OVERRIDE;
+  int ExtractMaps(MapHandleList* maps) const OVERRIDE;
+  MaybeHandle<Code> FindHandlerForMap(Handle<Map> map) const OVERRIDE;
   virtual bool FindHandlers(CodeHandleList* code_list,
                             int length = -1) const OVERRIDE;
-  virtual Name* FindFirstName() const OVERRIDE;
+  Name* FindFirstName() const OVERRIDE;
 };
 }
 }  // namespace v8::internal
 
 #endif  // V8_TRANSITIONS_H_