Move pub into sdk/lib/_internal.

utils/tests/pub/install/git/check_out_with_trailing_slash_test.dart

-// Copyright (c) 2012, 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 pub_tests;
-
-import 'dart:io';
-
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  group("(regression)", () {
-    integration('checks out a package from Git with a trailing slash', () {
-      ensureGit();
-
-      d.git('foo.git', [
-        d.libDir('foo'),
-        d.libPubspec('foo', '1.0.0')
-      ]).create();
-
-      d.appDir([{"git": "../foo.git/"}]).create();
-
-      schedulePub(args: ['install'],
-          output: new RegExp(r"Dependencies installed!$"));
-
-      d.dir(cachePath, [
-        d.dir('git', [
-          d.dir('cache', [d.gitPackageRepoCacheDir('foo')]),
-          d.gitPackageRevisionCacheDir('foo')
-        ])
-      ]).validate();
-
-      d.dir(packagesPath, [
-        d.dir('foo', [
-          d.file('foo.dart', 'main() => "foo";')
-        ])
-      ]).validate();
-    });
-  });
-}