Deprecate old code aging mechanism.

src/objects.cc

 // Copyright 2013 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 9383 matching lines @@
     ClearOptimizedCodeMap();
   }
 }
 
 
 bool JSFunction::CompileLazy(Handle<JSFunction> function,
                              ClearExceptionFlag flag) {
   bool result = true;
   if (function->shared()->is_compiled()) {
     function->ReplaceCode(function->shared()->code());
-    function->shared()->set_code_age(0);
   } else {
     ASSERT(function->shared()->allows_lazy_compilation());
     CompilationInfoWithZone info(function);
     result = CompileLazyHelper(&info, flag);
     ASSERT(!result || function->is_compiled());
   }
   return result;
 }
 
 
@@ skipping 6400 matching lines @@
   return static_cast<Type*>(type_raw());
 }
 
 
 void JSGlobalPropertyCell::set_type(Type* type, WriteBarrierMode ignored) {
   set_type_raw(type, ignored);
 }
 
 
 } }  // namespace v8::internal