Mark the functions of closures generated to speed up getField/setField as invisible, just like other dispatchers.
Mark the functions of closures generated to speed up getField/setField as invisible, just like other dispatchers.

BUG=http://dartbug.com/23006
R=asiva@google.com

Review URL: https://codereview.chromium.org//1036393002

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@44748 260f80e4-7a28-3924-810f-c04153c831b5

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