Remove outmoded --url-mapping option.

test/options_test.dart

 // Copyright (c) 2015, 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.
 
 @TestOn("vm")
-
 library analyzer_cli.test.options;
 
 import 'package:analyzer_cli/src/options.dart';
 import 'package:args/args.dart';
 import 'package:test/test.dart';
 
 main() {
   group('CommandLineOptions', () {
     group('parse', () {
       test('defaults', () {
         CommandLineOptions options =
             CommandLineOptions.parse(['--dart-sdk', '.', 'foo.dart']);
         expect(options, isNotNull);
         expect(options.dartSdkPath, isNotNull);
         expect(options.disableHints, isFalse);
         expect(options.lints, isFalse);
         expect(options.displayVersion, isFalse);
         expect(options.enableStrictCallChecks, isFalse);
         expect(options.enableSuperMixins, isFalse);
         expect(options.enableTypeChecks, isFalse);
         expect(options.ignoreUnrecognizedFlags, isFalse);
         expect(options.log, isFalse);
         expect(options.machineFormat, isFalse);
         expect(options.packageRootPath, isNull);
         expect(options.shouldBatch, isFalse);
         expect(options.showPackageWarnings, isFalse);
         expect(options.showSdkWarnings, isFalse);
         expect(options.sourceFiles, equals(['foo.dart']));
         expect(options.warningsAreFatal, isFalse);
-        expect(options.customUrlMappings, isNotNull);
-        expect(options.customUrlMappings.isEmpty, isTrue);
         expect(options.strongMode, isFalse);
       });
 
       test('batch', () {
         CommandLineOptions options =
             CommandLineOptions.parse(['--dart-sdk', '.', '--batch']);
         expect(options.shouldBatch, isTrue);
       });
 
       test('defined variables', () {
@@ skipping 75 matching lines @@
         expect(options.sourceFiles,
             equals(['foo.dart', 'foo2.dart', 'foo3.dart']));
       });
 
       test('warningsAreFatal', () {
         CommandLineOptions options = CommandLineOptions
             .parse(['--dart-sdk', '.', '--fatal-warnings', 'foo.dart']);
         expect(options.warningsAreFatal, isTrue);
       });
 
-      test('customUrlMappings', () {
-        CommandLineOptions options = CommandLineOptions.parse([
-          '--dart-sdk',
-          '.',
-          '--url-mapping',
-          'dart:dummy,/path/to/dummy.dart',
-          'foo.dart'
-        ]);
-        expect(options.customUrlMappings, isNotNull);
-        expect(options.customUrlMappings.isEmpty, isFalse);
-        expect(options.customUrlMappings['dart:dummy'],
-            equals('/path/to/dummy.dart'));
-      });
-
       test('notice unrecognized flags', () {
-        expect(() => new CommandLineParser().parse(
-                ['--bar', '--baz', 'foo.dart'], {}),
+        expect(
+            () => new CommandLineParser()
+                .parse(['--bar', '--baz', 'foo.dart'], {}),
             throwsA(new isInstanceOf<FormatException>()));
       });
 
       test('ignore unrecognized flags', () {
         CommandLineOptions options = CommandLineOptions.parse([
           '--ignore-unrecognized-flags',
           '--bar',
           '--baz',
           '--dart-sdk',
           '.',
@@ skipping 16 matching lines @@
 
       test('strong mode', () {
         CommandLineOptions options = CommandLineOptions
             .parse(['--strong', '--strong-hints', 'foo.dart']);
         expect(options.strongMode, isTrue);
         expect(options.strongHints, isTrue);
       });
 
       test("can't specify package and package-root", () {
         var failureMessage;
-        CommandLineOptions.parse([
-          '--package-root',
-          '.',
-          '--packages',
-          '.',
-          'foo.dart'
-        ], (msg) => failureMessage = msg);
+        CommandLineOptions.parse(
+            ['--package-root', '.', '--packages', '.', 'foo.dart'],
+            (msg) => failureMessage = msg);
         expect(failureMessage,
             equals("Cannot specify both '--package-root' and '--packages."));
       });
 
       test("bad SDK dir", () {
         var failureMessage;
         CommandLineOptions.parse(
             ['--dart-sdk', '&&&&&', 'foo.dart'], (msg) => failureMessage = msg);
         expect(failureMessage, equals('Invalid Dart SDK path: &&&&&'));
       });
     });
   });
 }