Consistently use only one of virtual/OVERRIDE/FINAL.

src/compiler/typer.cc

 // 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.
 
 #include "src/bootstrapper.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 205 matching lines @@
 
 Typer::~Typer() {
   graph_->RemoveDecorator(decorator_);
 }
 
 
 class Typer::Visitor : public Reducer {
  public:
   explicit Visitor(Typer* typer) : typer_(typer) {}
 
-  virtual Reduction Reduce(Node* node) OVERRIDE {
+  Reduction Reduce(Node* node) OVERRIDE {
     if (node->op()->ValueOutputCount() == 0) return NoChange();
     switch (node->opcode()) {
 #define DECLARE_CASE(x) \
   case IrOpcode::k##x:  \
     return UpdateBounds(node, TypeBinaryOp(node, x##Typer));
       JS_SIMPLE_BINOP_LIST(DECLARE_CASE)
 #undef DECLARE_CASE
 
 #define DECLARE_CASE(x) \
   case IrOpcode::k##x:  \
@@ skipping 1855 matching lines @@
         // TODO(rossberg): Do we want some ClampedArray type to express this?
         break;
     }
   }
   return Type::Constant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8