Fix interactive UI tests.  It was crashing due to a NULL ExtensionsService in the unit test.
Fix interactive UI tests.  It was crashing due to a NULL ExtensionsService in the unit test.

TBR=sky
Review URL: http://codereview.chromium.org/43042

git-svn-id: http://src.chromium.org/svn/trunk/src@11375 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 854b7510787213d81642fe6eb8c6b901b8839209
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