Experimental scanner: fix harmony flag setting.

src/lexer/lexer-shell.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 249 matching lines @@
 
 template<typename Char>
 TimeDelta RunExperimentalScanner(Handle<String> source,
                                  Isolate* isolate,
                                  Encoding encoding,
                                  bool dump_tokens,
                                  std::vector<TokenWithLocation>* tokens,
                                  int repeat,
                                  HarmonySettings harmony_settings) {
   ElapsedTimer timer;
-  timer.Start();
   ExperimentalScanner<Char> scanner(source, isolate);
   scanner.SetHarmonyNumericLiterals(harmony_settings.numeric_literals);
   scanner.SetHarmonyModules(harmony_settings.modules);
   scanner.SetHarmonyScoping(harmony_settings.scoping);
 
+  timer.Start();
+  scanner.Init();
   Token::Value token;
   do {
     token = scanner.Next();
     if (dump_tokens) {
       tokens->push_back(GetTokenWithLocation(&scanner, token));
     }
   } while (token != Token::EOS);
   return timer.Elapsed();
 }
 
@@ skipping 189 matching lines @@
       if (run_experimental) {
         if (benchmark.empty()) benchmark = "Experimental";
         printf("%s(RunTime): %.f ms\n", benchmark.c_str(),
                experimental_total);
       }
     }
   }
   v8::V8::Dispose();
   return 0;
 }