NTP: Add some padding to the lower buttons.
NTP: Add some padding to the lower buttons.

BUG=None
TEST=Close the most visited section. Now click the button. There should be some more space between the menu and the button.

Review URL: http://codereview.chromium.org/3598018

git-svn-id: http://src.chromium.org/svn/trunk/src@61994 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9026c948d8361314def80c128e89ef86ec828e97
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