Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/barback/fails_on_overlapping_directories_test.dart

Index: sdk/lib/_internal/pub/test/barback/fails_on_overlapping_directories_test.dart
diff --git a/sdk/lib/_internal/pub/test/barback/fails_on_overlapping_directories_test.dart b/sdk/lib/_internal/pub/test/barback/fails_on_overlapping_directories_test.dart
deleted file mode 100644
index 8e98b86759580fa06de4e8e24db245555e59a5e7..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/barback/fails_on_overlapping_directories_test.dart
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright (c) 2014, 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.
-
-import 'package:path/path.dart' as path;
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../../lib/src/exit_codes.dart' as exit_codes;
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-main() {
-  initConfig();
-
-  setUp(() {
-    d.dir(appPath, [
-      d.appPubspec(),
-      d.dir("web", [
-        d.dir("sub1", [
-          d.file("file.txt", "contents"),
-          d.dir("sub2", [
-            d.file("file.txt", "contents")
-          ]),
-          d.dir("sub3", [
-            d.file("file.txt", "contents")
-          ])
-        ])
-      ])
-    ]).create();
-  });
-
-  var webSub1 = path.join("web", "sub1");
-  var webSub1Sub2 = path.join("web", "sub1", "sub2");
-  var webSub1Sub3 = path.join("web", "sub1", "sub3");
-
-  pubBuildAndServeShouldFail("if a superdirectory follows a subdirectory",
-      args: [webSub1Sub2, webSub1],
-      error: 'Directories "$webSub1Sub2" and "$webSub1" cannot overlap.',
-      exitCode: exit_codes.USAGE);
-
-  pubBuildAndServeShouldFail("if a subdirectory follows a superdirectory",
-      args: [webSub1, webSub1Sub2],
-      error: 'Directories "$webSub1" and "$webSub1Sub2" cannot overlap.',
-      exitCode: exit_codes.USAGE);
-
-  pubBuildAndServeShouldFail("if multiple directories overlap",
-      args: [webSub1, webSub1Sub2, webSub1Sub3],
-      error: 'Directories "$webSub1", "$webSub1Sub2" and "$webSub1Sub3" '
-             'cannot overlap.',
-      exitCode: exit_codes.USAGE);
-}