Enable preaging of code objects when --optimize-for-size.

src/factory.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 348 matching lines @@
       Handle<Context> context,
       PretenureFlag pretenure = TENURED);
 
   Handle<ScopeInfo> NewScopeInfo(int length);
 
   Handle<JSObject> NewExternal(void* value);
 
   Handle<Code> NewCode(const CodeDesc& desc,
                        Code::Flags flags,
                        Handle<Object> self_reference,
+                       int prologue_offset = kPrologueOffsetNotSet,
                        bool immovable = false,
                        bool crankshafted = false);
 
   Handle<Code> CopyCode(Handle<Code> code);
 
   Handle<Code> CopyCode(Handle<Code> code, Vector<byte> reloc_info);
 
   Handle<Object> ToObject(Handle<Object> object);
   Handle<Object> ToObject(Handle<Object> object,
                           Handle<Context> native_context);
@@ skipping 282 matching lines @@
   }
 
  private:
   Isolate* isolate_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_