Unit test break fix.
Unit test break fix.

TEST=BackgroundApplicationListModelTest.LoadExplicitExtensions should pass on ChromeOS now
BUG=none
TBR=stevenjb
Review URL: http://codereview.chromium.org/6869040

git-svn-id: http://src.chromium.org/svn/trunk/src@81872 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 33e7d2d38c62017d53de653556d2ab77684ff7ba
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser