Add git ignore file to repo.
Add git ignore file to repo.

Review URL: http://codereview.chromium.org/119092

git-svn-id: http://src.chromium.org/svn/trunk/src@17540 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 4a4b77c3f6cdcd241f1f4f20cf9643b502a37d7e
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