Add more Chrome OS repo directories to .gitignore.
Add more Chrome OS repo directories to .gitignore.

TBR=satorux
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/557018

git-svn-id: http://src.chromium.org/svn/trunk/src@37277 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f2433e578463a95d351641bd9c693ae9a3e1f413
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