Pass a package root to spawned isolates in pub.

sdk/lib/_internal/pub/lib/src/barback/rewrite_import_transformer.dart

Index: sdk/lib/_internal/pub/lib/src/barback/rewrite_import_transformer.dart
diff --git a/sdk/lib/_internal/pub/lib/src/barback/rewrite_import_transformer.dart b/sdk/lib/_internal/pub/lib/src/barback/rewrite_import_transformer.dart
deleted file mode 100644
index 7482d620a840df40be7a5ecdb6c093888f231a6a..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/lib/src/barback/rewrite_import_transformer.dart
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright (c) 2013, 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.

[Bob Nystrom, 2014/09/23 21:56:11]

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          `-\   \ `-'-'-'|   `.      -.  \(_./
             \   \.-.-.  \     \___ /  >-'\_\
              \   \  \ \  `/\  |_  '` /
           _./\    \  ' | /    /_\ .-`
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          ___\_ `.        /__.-'   ``--..
   ..--''`     `-.\      (___/`'--.._____)
  (_____...--'`\___) 

-
-library pub.rewrite_import_transformer;
-
-import 'dart:async';
-
-import 'package:barback/barback.dart';
-
-import '../dart.dart';
-
-/// A transformer used internally to rewrite "package:" imports so they point to
-/// the barback server rather than to pub's package root.
-class RewriteImportTransformer extends Transformer {
-  String get allowedExtensions => '.dart';
-
-  Future apply(Transform transform) {
-    return transform.primaryInput.readAsString().then((contents) {
-      var directives = parseImportsAndExports(contents,
-          name: transform.primaryInput.id.toString());
-
-      var buffer = new StringBuffer();
-      var index = 0;
-      for (var directive in directives) {
-        var uri = Uri.parse(directive.uri.stringValue);
-        if (uri.scheme != 'package') continue;
-
-        buffer
-          ..write(contents.substring(index, directive.uri.literal.offset))
-          ..write('"/packages/${uri.path}"');
-        index = directive.uri.literal.end;
-      }
-      buffer.write(contents.substring(index, contents.length));
-
-      transform.addOutput(
-          new Asset.fromString(transform.primaryInput.id, buffer.toString()));
-    });
-  }
-}