Wrap messages implementation in a function.

test/cctest/test-parsing.cc

 // 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 1338 matching lines @@
     arg = ReadString(&data[pos]);
     args_array = factory->NewJSArray(1);
     i::JSArray::SetElement(args_array, 0, v8::Utils::OpenHandle(*v8_str(arg)),
                            NONE, i::SLOPPY).Check();
   } else {
     CHECK_EQ(0, arg_count);
     args_array = factory->NewJSArray(0);
   }
 
   i::Handle<i::JSObject> builtins(isolate->js_builtins_object());
-  i::Handle<i::Object> format_fun = i::Object::GetProperty(
-      isolate, builtins, "FormatMessage").ToHandleChecked();
+  i::Handle<i::Object> format_fun =
+      i::Object::GetProperty(isolate, builtins, "$formatMessage")
+          .ToHandleChecked();
   i::Handle<i::Object> arg_handles[] = { format, args_array };
   i::Handle<i::Object> result = i::Execution::Call(
       isolate, format_fun, builtins, 2, arg_handles).ToHandleChecked();
   CHECK(result->IsString());
   i::DeleteArray(message);
   i::DeleteArray(arg);
   data.Dispose();
   return i::Handle<i::String>::cast(result);
 }
 
@@ skipping 4965 matching lines @@
     v8::Script::Compile(v8_str(script3));
     CHECK(try_catch2.HasCaught());
     v8::String::Utf8Value exception(try_catch2.Exception());
     CHECK_EQ(0,
              strcmp(
                  "ReferenceError: In strong mode, using an undeclared global "
                  "variable 'not_there3' is not allowed",
                  *exception));
   }
 }