move CommandLineParser into analyzer for reuse by DDC

pkg/analyzer_cli/test/options_test.dart

Index: pkg/analyzer_cli/test/options_test.dart
diff --git a/pkg/analyzer_cli/test/options_test.dart b/pkg/analyzer_cli/test/options_test.dart
index 35a1d4f14019cf3fa840501773ef123e180ee9f4..c0ca301e3a07695560dff70238ed27b4a9f6058d 100644
--- a/pkg/analyzer_cli/test/options_test.dart
+++ b/pkg/analyzer_cli/test/options_test.dart
@@ -8,7 +8,6 @@ import 'dart:io';
 
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:analyzer_cli/src/options.dart';
-import 'package:args/args.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -152,12 +151,6 @@ main() {
         expect(options.warningsAreFatal, isTrue);
       });
 
-      test('notice unrecognized flags', () {
-        expect(
-            () => new CommandLineParser().parse(['--bar', '--baz', 'foo.dart']),
-            throwsA(new isInstanceOf<FormatException>()));
-      });
-
       test('ignore unrecognized flags', () {
         CommandLineOptions options = CommandLineOptions.parse([
           '--ignore-unrecognized-flags',
@@ -171,17 +164,6 @@ main() {
         expect(options.sourceFiles, equals(['foo.dart']));
       });
 
-      test('ignore unrecognized options', () {
-        CommandLineParser parser =
-            new CommandLineParser(alwaysIgnoreUnrecognized: true);
-        parser.addOption('optionA');
-        parser.addFlag('flagA');
-        ArgResults argResults =
-            parser.parse(['--optionA=1', '--optionB=2', '--flagA']);
-        expect(argResults['optionA'], '1');
-        expect(argResults['flagA'], isTrue);
-      });
-
       test('strong mode', () {
         CommandLineOptions options =
             CommandLineOptions.parse(['--strong', 'foo.dart']);