Made parser not accept unicode escapes inside "native" when used as a keyword.

src/parser.cc

 // Copyright 2011 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 1762 matching lines @@
 
   // If we have an extension, we allow a native function declaration.
   // A native function declaration starts with "native function" with
   // no line-terminator between the two words.
   if (extension_ != NULL &&
       peek() == Token::FUNCTION &&
       !scanner().has_line_terminator_before_next() &&
       expr != NULL &&
       expr->AsVariableProxy() != NULL &&
       expr->AsVariableProxy()->name()->Equals(
-          isolate()->heap()->native_symbol())) {
+          isolate()->heap()->native_symbol()) &&
+      !scanner().literal_contains_escapes()) {
     return ParseNativeDeclaration(ok);
   }
 
   // Parsed expression statement.
   ExpectSemicolon(CHECK_OK);
   return new(zone()) ExpressionStatement(expr);
 }
 
 
 IfStatement* Parser::ParseIfStatement(ZoneStringList* labels, bool* ok) {
@@ skipping 3213 matching lines @@
                                    info->is_global(),
                                    info->StrictMode());
     }
   }
 
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal