Provide nativeEmitter getter.
Provide nativeEmitter getter.

Spotted while debugging different issue.

R=ahe@google.com,floitsch@google.com,kasperl@google.com,ngeoffray@google.com

Review URL: https://chromiumcodereview.appspot.com//10407004

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@7863 260f80e4-7a28-3924-810f-c04153c831b5

dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk