Revert "Revert "Adding package:code_transformers for unifying common transformers code""

pkg/code_transformers/lib/resolver.dart

Index: pkg/code_transformers/lib/resolver.dart
diff --git a/tests/compiler/dart2js/path with spaces/library space/lib with spaces.dart b/pkg/code_transformers/lib/resolver.dart
similarity index 52%
copy from tests/compiler/dart2js/path with spaces/library space/lib with spaces.dart
copy to pkg/code_transformers/lib/resolver.dart
index 16da6e3295bca2daa89abcf7104d7a492f7cd846..739dd5a777d34462c328397c3130bc6a6f48b3bf 100644
--- a/tests/compiler/dart2js/path with spaces/library space/lib with spaces.dart	
+++ b/pkg/code_transformers/lib/resolver.dart
@@ -2,8 +2,9 @@
 // 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 spaces;
+/// Tools for working with resolved ASTs from Barback transformers.
+library code_transformers.resolver;
 
-part "part space/part space.dart";
-
-foo() => bar();
+export 'src/resolver_transformer.dart';
+export 'src/resolver.dart';
+export 'src/dart_sdk.dart';