Improvements to warnings on message extraction.

pkg/intl/test/message_extraction/part_of_sample_with_messages.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.part of sample;
 
 part of sample;
 
 class Person {
   String name;
   String gender;
   Person(this.name, this.gender);
@@ skipping 26 matching lines @@
   whereTheyWent(Person person, String place) =>
       whereTheyWentMessage(person.name, person.gender, place);
 
   whereTheyWentMessage(String name, String gender, String place) {
     return Intl.message(
         "${Intl.gender(gender,
             male: '$name went to his $place',
             female: '$name went to her $place',
             other: '$name went to its $place')
         }",
-        name: "whereTheyWent",
+        name: "whereTheyWentMessage",
         args: [name, gender, place],
         desc: 'A person went to some place that they own, e.g. their room'
     );
   }
 
   // English doesn't do enough with genders, so this example is French.
   nested(List people, String place) {
     var names = people.map((x) => x.name).join(", ");
     var number = people.length;
     var combinedGender = people.every(
         (x) => x.gender == "female") ? "female" : "other";
     if (number == 0) combinedGender = "other";
 
     nestedMessage(names, number, combinedGender, place) => Intl.message(
         '''${Intl.gender(combinedGender,
           other: '${Intl.plural(number,
             zero: "Personne n'est allé au $place",
             one: "${names} est allé au $place",
             other: "${names} sont allés au $place")}',
           female: '${Intl.plural(number,
             one: "$names est allée au $place",
           other: "$names sont allées au $place")}'
         )}''',
        name: "nestedMessage",
        args: [names, number, combinedGender, place]);
     return nestedMessage(names, number, combinedGender, place);
   }
 }