Improvements to warnings on message extraction.

pkg/intl/test/message_extraction/make_hardcoded_translation.dart

Index: pkg/intl/test/message_extraction/make_hardcoded_translation.dart
diff --git a/pkg/intl/test/message_extraction/make_hardcoded_translation.dart b/pkg/intl/test/message_extraction/make_hardcoded_translation.dart
index 1fddfafce69ff41d50ce19a4731184cde133177e..6ace5e0c6f164f3f92e4d8a51a67977141ee4d45 100644
--- a/pkg/intl/test/message_extraction/make_hardcoded_translation.dart
+++ b/pkg/intl/test/message_extraction/make_hardcoded_translation.dart
@@ -61,7 +61,7 @@ var french = {
       ], null)),
   // TODO(alanknight): These are pretty horrible to write out manually. Provide
   // a better way of reading/writing translations. A real format would be good.
-  "whereTheyWent" : writer.write(new Gender.from("gender",
+  "whereTheyWentMessage" : writer.write(new Gender.from("gender",
     [
       ["male", [0, " est allé à sa ", 2]],
       ["female", [0, " est allée à sa ", 2]],
@@ -131,7 +131,7 @@ var german = {
     ], null)),
   // TODO(alanknight): These are pretty horrible to write out manually. Provide
   // a better way of reading/writing translations. A real format would be good.
-  "whereTheyWent" : writer.write(new Gender.from("gender",
+  "whereTheyWentMessage" : writer.write(new Gender.from("gender",
     [
       ["male", [0, " ging zu seinem ", 2]],
       ["female", [0, " ging zu ihrem ", 2]],