Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/serve/serve_from_dependency_lib_test.dart

Index: sdk/lib/_internal/pub/test/serve/serve_from_dependency_lib_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/serve_from_dependency_lib_test.dart b/sdk/lib/_internal/pub/test/serve/serve_from_dependency_lib_test.dart
deleted file mode 100644
index b55a06f75de9b73ca7d8374eea2188efd825475a..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/serve/serve_from_dependency_lib_test.dart
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 '../descriptor.dart' as d;
-import '../test_pub.dart';
-import 'utils.dart';
-
-main() {
-  initConfig();
-  integration("'packages' URLs look in the dependency's lib directory", () {
-    d.dir("foo", [
-      d.libPubspec("foo", "0.0.1"),
-      d.dir("lib", [
-        d.file("lib.dart", "foo() => 'foo';"),
-        d.dir("sub", [
-          d.file("lib.dart", "bar() => 'bar';"),
-        ])
-      ])
-    ]).create();
-
-    d.dir(appPath, [
-      d.appPubspec({
-        "foo": {"path": "../foo"}
-      })
-    ]).create();
-
-    pubServe(shouldGetFirst: true);
-    requestShouldSucceed("packages/foo/lib.dart", "foo() => 'foo';");
-    requestShouldSucceed("packages/foo/sub/lib.dart", "bar() => 'bar';");
-
-    // "packages" can be in a subpath of the URL:
-    requestShouldSucceed("foo/packages/foo/lib.dart", "foo() => 'foo';");
-    requestShouldSucceed("a/b/packages/foo/sub/lib.dart", "bar() => 'bar';");
-    endPubServe();
-  });
-}