Pull args, intl, logging, shelf, and source_maps out of the SDK.

pkg/source_maps/test/builder_test.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.
-
-library test.source_maps_test;
-
-import 'dart:convert';
-import 'package:unittest/unittest.dart';
-import 'package:source_maps/source_maps.dart';
-import 'common.dart';
-
-main() {
-  test('builder - with span', () {
-    var map = (new SourceMapBuilder()
-        ..addSpan(inputVar1, outputVar1)
-        ..addSpan(inputFunction, outputFunction)
-        ..addSpan(inputVar2, outputVar2)
-        ..addSpan(inputExpr, outputExpr))
-        .build(output.url.toString());
-    expect(map, equals(EXPECTED_MAP));
-  });
-
-  test('builder - with location', () {
-    var str = (new SourceMapBuilder()
-        ..addLocation(inputVar1.start, outputVar1.start, 'longVar1')
-        ..addLocation(inputFunction.start, outputFunction.start, 'longName')
-        ..addLocation(inputVar2.start, outputVar2.start, 'longVar2')
-        ..addLocation(inputExpr.start, outputExpr.start, null))
-        .toJson(output.url.toString());
-    expect(str, JSON.encode(EXPECTED_MAP));
-  });
-}