Remove support for SDK dependencies.

utils/tests/pub/update/pub_update_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 '../../../../pkg/unittest/lib/unittest.dart';
 import '../test_pub.dart';
 
 main() {
+  initConfig();
   group('requires', () {
     integration('a pubspec', () {
       dir(appPath, []).scheduleCreate();
 
       schedulePub(args: ['update'],
           error: new RegExp(r'^Could not find a file named "pubspec.yaml"'),
           exitCode: 1);
     });
 
     integration('a pubspec with a "name" key', () {
@@ skipping 37 matching lines @@
     schedulePub(args: ['update'],
         output: new RegExp(r"Dependencies updated!$"));
 
     dir(packagesPath, [
       nothing("myapp_name")
     ]).scheduleValidate();
   });
 
   integration('does not add a package if it does not have a "lib" '
       'directory', () {
-    // Using an SDK source, but this should be true of all sources.
-    dir(sdkPath, [
-      dir('pkg', [
-        dir('foo', [
-          libPubspec('foo', '0.0.0-not.used')
-        ])
-      ])
+    // Using a path source, but this should be true of all sources.
+    dir('foo', [
+      libPubspec('foo', '0.0.0-not.used')
     ]).scheduleCreate();
 
     dir(appPath, [
-      pubspec({"name": "myapp", "dependencies": {"foo": {"sdk": "foo"}}})
+      pubspec({"name": "myapp", "dependencies": {"foo": {"path": "../foo"}}})
     ]).scheduleCreate();
 
     schedulePub(args: ['update'],
         output: new RegExp(r"Dependencies updated!$"));
 
     packagesDir({"foo": null}).scheduleValidate();
   });
 }