Remove uses of Options from pkg, samples, tests, and third_party directories.

pkg/intl/test/message_extraction/extract_to_json.dart

Index: pkg/intl/test/message_extraction/extract_to_json.dart
diff --git a/pkg/intl/test/message_extraction/extract_to_json.dart b/pkg/intl/test/message_extraction/extract_to_json.dart
index ea7695e0657bbda77ed0bebb4771f3e3755591be..279c8f5389a169e461e03f29ee741cdff0e3801e 100644
--- a/pkg/intl/test/message_extraction/extract_to_json.dart
+++ b/pkg/intl/test/message_extraction/extract_to_json.dart
@@ -27,8 +27,7 @@ import 'package:path/path.dart' as path;
 import 'package:intl/src/intl_message.dart';
 import 'package:args/args.dart';
 
-main() {
-  var args = new Options().arguments;
+main(List<String> args) {
   var targetDir;
   var parser = new ArgParser();
   parser.addFlag("suppress-warnings", defaultsTo: false,
@@ -78,4 +77,4 @@ Map toJson(MainMessage message) {
   }
   result["message"] = message.expanded(leaveTheInterpolationsInDartForm);
   return result;
-}
+}