Replace OVERRIDE->override and FINAL->final since we now require C++11.

src/preparser.h

 // Copyright 2012 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_PREPARSER_H
 #define V8_PREPARSER_H
 
 #include "src/v8.h"
 
 #include "src/bailout-reason.h"
@@ skipping 626 matching lines @@
     ParserBase* parser_;
   };
 
   // Validation per ES6 object literals.
   class ObjectLiteralChecker : public ObjectLiteralCheckerBase {
    public:
     explicit ObjectLiteralChecker(ParserBase* parser)
         : ObjectLiteralCheckerBase(parser), has_seen_proto_(false) {}
 
     void CheckProperty(Token::Value property, PropertyKind type, bool is_static,
-                       bool is_generator, bool* ok) OVERRIDE;
+                       bool is_generator, bool* ok) override;
 
    private:
     bool IsProto() { return this->scanner()->LiteralMatches("__proto__", 9); }
 
     bool has_seen_proto_;
   };
 
   // Validation per ES6 class literals.
   class ClassLiteralChecker : public ObjectLiteralCheckerBase {
    public:
     explicit ClassLiteralChecker(ParserBase* parser)
         : ObjectLiteralCheckerBase(parser), has_seen_constructor_(false) {}
 
     void CheckProperty(Token::Value property, PropertyKind type, bool is_static,
-                       bool is_generator, bool* ok) OVERRIDE;
+                       bool is_generator, bool* ok) override;
 
    private:
     bool IsConstructor() {
       return this->scanner()->LiteralMatches("constructor", 11);
     }
     bool IsPrototype() {
       return this->scanner()->LiteralMatches("prototype", 9);
     }
 
     bool has_seen_constructor_;
@@ skipping 2668 matching lines @@
       *ok = false;
       return;
     }
     has_seen_constructor_ = true;
     return;
   }
 }
 } }  // v8::internal
 
 #endif  // V8_PREPARSER_H