Error from angular transformer when building.

[nshahan]

Since commit 47695b9 Running a pub build on a simple hello world application produces the following output:

> pub build
Loading source assets...
Loading angular2/transform/codegen and dart_to_js_script_rewriter transformers... (1.1s)
Loading angular2 transformers... (2.5s)
[Error from DirectiveMetadataLinker on angular2|lib/platform/testing/browser_static.ng_summary.json with input angular2|lib/src/platform/browser_common.ng_meta.json]:
Missing identifier "COMMON_PIPES" needed by "root" from metadata map
Building simple_angular_app...
[Info from Dart2JS]:
Compiling simple_angular_app|web/main.dart...
[Info from Dart2JS]:
Took 0:00:08.398120 to compile simple_angular_app|web/main.dart.
Built 916 files to "build".