Roll to pickup pool changes

packages/package_config/test/discovery_analysis_test.dart

 // Copyright (c) 2015, 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 package_config.discovery_analysis_test;
 
 import "dart:async";
 import "dart:io";
 
 import "package:package_config/discovery_analysis.dart";
@@ skipping 60 matching lines @@
   expect(resolver, isNotNull);
   expect(resolver.resolve(pkg("foo", "bar/baz")),
       equals(location.resolve("packages/foo/bar/baz")));
   expect(resolver.resolve(pkg("bar", "baz/qux")),
       equals(location.resolve("packages/bar/baz/qux")));
   expect(resolver.resolve(pkg("baz", "qux/foo")),
       equals(location.resolve("packages/baz/qux/foo")));
   if (location.scheme == "file") {
     expect(resolver.packages, unorderedEquals(["foo", "bar", "baz"]));
   } else {
-    expect(() => resolver.packages, throws);
+    expect(() => resolver.packages, throwsUnsupportedError);
   }
 }
 
 Uri pkg(String packageName, String packagePath) {
   var path;
   if (packagePath.startsWith('/')) {
     path = "$packageName$packagePath";
   } else {
     path = "$packageName/$packagePath";
   }
@@ skipping 24 matching lines @@
     if (content is Map) {
       Directory subDir = new Directory(path.join(target.path, name));
       subDir.createSync();
       _createFiles(subDir, content);
     } else {
       File file = new File(path.join(target.path, name));
       file.writeAsStringSync(content, flush: true);
     }
   });
 }