Relayout NTP after apps section loads, even if zero apps installed.
Relayout NTP after apps section loads, even if zero apps installed.

BUG=68792
TEST=See bug.

Review URL: http://codereview.chromium.org/6070012

git-svn-id: http://src.chromium.org/svn/trunk/src@70683 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 02e7a98ae2940fc9963d666d00a55e80f378757c
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