Install barback from a hosted source in all tests.

test/transformer/cache_test.dart

 // Copyright (c) 2014, 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 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
@@ skipping 19 matching lines @@
     });
   }
 }
 """;
 
 // TODO(nweiz): Currently scheduled_test.setUp doesn't play well with test_pub,
 // since it only assigns the sandbox directory once the main test body has
 // run. Fix this and move this to a real setUp call.
 void setUp() {
   servePackages((builder) {
-    builder.serveRepoPackage('barback');
+    builder.serveRealPackage('barback');
 
     builder.serve("foo", "1.2.3",
         deps: {'barback': 'any'},
         contents: [
       d.dir("lib", [
         d.file("transformer.dart", replaceTransformer("Hello", "Goodbye"))
       ])
     ]);
 
     builder.serve("bar", "1.2.3",
@@ skipping 151 matching lines @@
     d.dir(appPath, [
       d.dir(".pub/transformers", [
         d.file("manifest.txt", "0.1.2+3\nfoo"),
         d.matcherFile("transformers.snapshot", isNot(isEmpty))
       ])
     ]).validate();
   });
 
   integration("recaches if a transitive dependency version changes", () {
     servePackages((builder) {
-      builder.serveRepoPackage('barback');
+      builder.serveRealPackage('barback');
 
       builder.serve("foo", "1.2.3",
           deps: {
             'barback': 'any',
             'bar': 'any'
           },
           contents: [
         d.dir("lib", [
           d.file("transformer.dart", REPLACE_FROM_LIBRARY_TRANSFORMER)
         ])
@@ skipping 114 matching lines @@
   Future apply(Transform transform) {
     return transform.primaryInput.readAsString().then((contents) {
       transform.addOutput(new Asset.fromString(
           transform.primaryInput.id,
           contents.replaceAll("$input", "$output")));
     });
   }
 }
 """;
 }