Disable setting block-third-party-cookies in HostContentSettingsMap if this preference is managed.
Disable setting block-third-party-cookies in HostContentSettingsMap if this preference is managed.

BUG=49607
TEST=none

Review URL: http://codereview.chromium.org/4170006

git-svn-id: http://src.chromium.org/svn/trunk/src@64236 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 87a93546dc94a4fdf9cfeca0b30f6c4e4f8b2674
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