Move pub into sdk/lib/_internal.

utils/tests/pub/update/git/do_not_update_if_unneeded_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 '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration("doesn't update one locked Git package's dependencies if it's "
-      "not necessary", () {
-    ensureGit();
-
-    d.git('foo.git', [
-      d.libDir('foo'),
-      d.libPubspec("foo", "1.0.0", deps: [{"git": "../foo-dep.git"}])
-    ]).create();
-
-    d.git('foo-dep.git', [
-      d.libDir('foo-dep'),
-      d.libPubspec('foo-dep', '1.0.0')
-    ]).create();
-
-    d.appDir([{"git": "../foo.git"}]).create();
-
-    schedulePub(args: ['install'],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo";')
-      ]),
-      d.dir('foo-dep', [
-        d.file('foo-dep.dart', 'main() => "foo-dep";')
-      ])
-    ]).validate();
-
-    d.git('foo.git', [
-      d.libDir('foo', 'foo 2'),
-      d.libPubspec("foo", "1.0.0", deps: [{"git": "../foo-dep.git"}])
-    ]).create();
-
-    d.git('foo-dep.git', [
-      d.libDir('foo-dep', 'foo-dep 2'),
-      d.libPubspec('foo-dep', '1.0.0')
-    ]).commit();
-
-    schedulePub(args: ['update', 'foo'],
-        output: new RegExp(r"Dependencies updated!$"));
-
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo 2";')
-      ]),
-      d.dir('foo-dep', [
-        d.file('foo-dep.dart', 'main() => "foo-dep";')
-      ]),
-    ]).validate();
-  });
-}