[Arguments] Remove synthetic properties and all code dealing with them.

arguments/src/prettyprinter.cc

 // Copyright 2006-2008 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 1409 matching lines @@
 
 
 void JsonAstBuilder::VisitThrow(Throw* expr) {
   TagScope tag(this, "Throw");
   Visit(expr->exception());
 }
 
 
 void JsonAstBuilder::VisitProperty(Property* expr) {
   TagScope tag(this, "Property");
-  {
-    AttributesScope attributes(this);
-    AddAttribute("type", expr->is_synthetic() ? "SYNTHETIC" : "NORMAL");
-  }
   Visit(expr->obj());
   Visit(expr->key());
 }
 
 
 void JsonAstBuilder::VisitCall(Call* expr) {
   TagScope tag(this, "Call");
   Visit(expr->expression());
   VisitExpressions(expr->arguments());
 }
@@ skipping 86 matching lines @@
     AddAttribute("mode", Variable::Mode2String(decl->mode()));
   }
   Visit(decl->proxy());
   if (decl->fun() != NULL) Visit(decl->fun());
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal