Move pub into sdk/lib/_internal.

utils/tests/pub/install/git/lock_version_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:pathos/path.dart' as path;
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../../../pub/io.dart';
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('keeps a Git package locked to the version in the lockfile', () {
-    ensureGit();
-
-    d.git('foo.git', [
-      d.libDir('foo'),
-      d.libPubspec('foo', '1.0.0')
-    ]).create();
-
-    d.appDir([{"git": "../foo.git"}]).create();
-
-    // This install should lock the foo.git dependency to the current revision.
-    schedulePub(args: ['install'],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo";')
-      ])
-    ]).validate();
-
-    // Delete the packages path to simulate a new checkout of the application.
-    schedule(() => deleteEntry(path.join(sandboxDir, packagesPath)));
-
-    d.git('foo.git', [
-      d.libDir('foo', 'foo 2'),
-      d.libPubspec('foo', '1.0.0')
-    ]).commit();
-
-    // This install shouldn't update the foo.git dependency due to the lockfile.
-    schedulePub(args: ['install'],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo";')
-      ])
-    ]).validate();
-  });
-}