Add FINAL and OVERRIDE macros for C++11 final/override.

src/ast.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 2126 matching lines @@
                                          // must have extra bit.
   SmallMapList receiver_types_;
 };
 
 
 class Yield: public Expression {
  public:
   DECLARE_NODE_TYPE(Yield)
 
   enum Kind {
-    INITIAL,     // The initial yield that returns the unboxed generator object.
-    SUSPEND,     // A normal yield: { value: EXPRESSION, done: false }
-    DELEGATING,  // A yield*.
-    FINAL        // A return: { value: EXPRESSION, done: true }
+    kInitial,     // The initial yield that returns the unboxed generator object
+    kSuspend,     // A normal yield: { value: EXPRESSION, done: false }
+    kDelegating,  // A yield*.
+    kFinal        // A return: { value: EXPRESSION, done: true }
   };
 
   Expression* generator_object() const { return generator_object_; }
   Expression* expression() const { return expression_; }
   Kind yield_kind() const { return yield_kind_; }
   virtual int position() const { return pos_; }
 
   // Delegating yield surrounds the "yield" in a "try/catch".  This index
   // locates the catch handler in the handler table, and is equivalent to
   // TryCatchStatement::index().
   int index() const {
-    ASSERT(yield_kind() == DELEGATING);
+    ASSERT(yield_kind() == kDelegating);
     return index_;
   }
   void set_index(int index) {
-    ASSERT(yield_kind() == DELEGATING);
+    ASSERT(yield_kind() == kDelegating);
     index_ = index;
   }
 
  protected:
   Yield(Isolate* isolate,
         Expression* generator_object,
         Expression* expression,
         Kind yield_kind,
         int pos)
       : Expression(isolate),
@@ skipping 1048 matching lines @@
  private:
   Isolate* isolate_;
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_