Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/transformer/can_use_has_input_test.dart

Index: sdk/lib/_internal/pub/test/transformer/can_use_has_input_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/can_use_has_input_test.dart b/sdk/lib/_internal/pub/test/transformer/can_use_has_input_test.dart
deleted file mode 100644
index 1e8a858e28b4fe859d089af00e0588de0a622cf8..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/test/transformer/can_use_has_input_test.dart
+++ /dev/null
@@ -1,59 +0,0 @@
-// 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 '../descriptor.dart' as d;
-import '../test_pub.dart';
-import '../serve/utils.dart';
-
-const TRANSFORMER = """
-import 'dart:async';
-
-import 'package:barback/barback.dart';
-
-class RewriteTransformer extends Transformer {
-  RewriteTransformer.asPlugin();
-
-  String get allowedExtensions => '.txt';
-
-  Future apply(Transform transform) {
-    return Future.wait([
-      transform.hasInput(transform.primaryInput.id),
-      transform.hasInput(new AssetId('hooble', 'whatsit'))
-    ]).then((results) {
-      var id = transform.primaryInput.id.changeExtension(".out");
-      var asset = new Asset.fromString(id,
-          "primary: \${results[0]}, secondary: \${results[1]}");
-      transform.addOutput(asset);
-    });
-  }
-}
-""";
-
-main() {
-  initConfig();
-  withBarbackVersions("any", () {
-    integration("a transform can use hasInput", () {
-      d.dir(appPath, [
-        d.pubspec({
-          "name": "myapp",
-          "transformers": ["myapp/src/transformer"]
-        }),
-        d.dir("lib", [d.dir("src", [
-          d.file("transformer.dart", TRANSFORMER)
-        ])]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
-
-      createLockFile('myapp', pkg: ['barback']);
-
-      pubServe();
-      requestShouldSucceed("foo.out", "primary: true, secondary: false");
-      endPubServe();
-    });
-  });
-}