Only add Chrome App Store if the apps flag is on.
Only add Chrome App Store if the apps flag is on.

See also http://codereview.chromium.org/3048020

BUG=49972
TEST=Manually

Review URL: http://codereview.chromium.org/3007012

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@53675 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser