Workaround for 8455
Workaround for 8455

BUG=8455
R=ahe@google.com

Review URL: https://codereview.chromium.org//14790017

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@22375 260f80e4-7a28-3924-810f-c04153c831b5

dart-archive/browser