Fix improper usage of V8_OVERRIDE.

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 1167 matching lines @@
 
 
 class HControlInstruction : public HInstruction {
  public:
   virtual HBasicBlock* SuccessorAt(int i) = 0;
   virtual int SuccessorCount() = 0;
   virtual void SetSuccessorAt(int i, HBasicBlock* block) = 0;
 
   virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
 
-  virtual bool KnownSuccessorBlock(HBasicBlock** block) V8_OVERRIDE {
+  virtual bool KnownSuccessorBlock(HBasicBlock** block) {
     *block = NULL;
     return false;
   }
 
   HBasicBlock* FirstSuccessor() {
     return SuccessorCount() > 0 ? SuccessorAt(0) : NULL;
   }
   HBasicBlock* SecondSuccessor() {
     return SuccessorCount() > 1 ? SuccessorAt(1) : NULL;
   }
@@ skipping 117 matching lines @@
 class HDeoptimize V8_FINAL : public HTemplateControlInstruction<1, 0> {
  public:
   static HInstruction* New(Zone* zone,
                            HValue* context,
                            const char* reason,
                            Deoptimizer::BailoutType type,
                            HBasicBlock* unreachable_continuation) {
     return new(zone) HDeoptimize(reason, type, unreachable_continuation);
   }
 
-  virtual bool KnownSuccessorBlock(HBasicBlock** block) {
+  virtual bool KnownSuccessorBlock(HBasicBlock** block) V8_OVERRIDE {
     *block = NULL;
     return true;
   }
 
   virtual Representation RequiredInputRepresentation(int index) V8_OVERRIDE {
     return Representation::None();
   }
 
   const char* reason() const { return reason_; }
   Deoptimizer::BailoutType type() { return type_; }
@@ skipping 5769 matching lines @@
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_