assure model is loaded *before* showing the bookmark manager
assure model is loaded *before* showing the bookmark manager

Review URL: http://codereview.chromium.org/173554

git-svn-id: http://src.chromium.org/svn/trunk/src@24581 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a8d95e336c529e049ebe788ec20633cae1dc9337
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