Ignore failures in dartfmt
Ignore failures in dartfmt

Closes https://github.com/dart-lang/angular2/pull/334

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=152312109

angulardart/angular,kevmoo/angular,chalin/angular2,angulardart/angular,chalin/angular2,kevmoo/angular,angulardart/angular,matanlurey/angular,matanlurey/angular,kevmoo/angular,chalin/angular2,matanlurey/angular