Consistently use only one of virtual/OVERRIDE/FINAL.

src/objects.cc

 // Copyright 2013 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.
 
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
@@ skipping 14149 matching lines @@
   return String::cast(string)->IsOneByteEqualTo(chars);
 }
 
 
 // InternalizedStringKey carries a string/internalized-string object as key.
 class InternalizedStringKey : public HashTableKey {
  public:
   explicit InternalizedStringKey(Handle<String> string)
       : string_(string) { }
 
-  virtual bool IsMatch(Object* string) OVERRIDE {
+  bool IsMatch(Object* string) OVERRIDE {
     return String::cast(string)->Equals(*string_);
   }
 
-  virtual uint32_t Hash() OVERRIDE { return string_->Hash(); }
+  uint32_t Hash() OVERRIDE { return string_->Hash(); }
 
-  virtual uint32_t HashForObject(Object* other) OVERRIDE {
+  uint32_t HashForObject(Object* other) OVERRIDE {
     return String::cast(other)->Hash();
   }
 
-  virtual Handle<Object> AsHandle(Isolate* isolate) OVERRIDE {
+  Handle<Object> AsHandle(Isolate* isolate) OVERRIDE {
     // Internalize the string if possible.
     MaybeHandle<Map> maybe_map =
         isolate->factory()->InternalizedStringMapForString(string_);
     Handle<Map> map;
     if (maybe_map.ToHandle(&map)) {
       string_->set_map_no_write_barrier(*map);
       DCHECK(string_->IsInternalizedString());
       return string_;
     }
     // Otherwise allocate a new internalized string.
@@ skipping 2740 matching lines @@
   Handle<DependentCode> codes =
       DependentCode::Insert(handle(cell->dependent_code(), info->isolate()),
                             DependentCode::kPropertyCellChangedGroup,
                             info->object_wrapper());
   if (*codes != cell->dependent_code()) cell->set_dependent_code(*codes);
   info->dependencies(DependentCode::kPropertyCellChangedGroup)->Add(
       cell, info->zone());
 }
 
 } }  // namespace v8::internal