Samples for `enableReferrer` and `allowThirdPartyCookies` should use the `privacy` namespace.

While fixing these samples, I've also added `content_security_policy` as a
drive-by.

BUG=92644
TEST=

Review URL: http://codereview.chromium.org/8341010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@106059 0039d316-1c4b-4281-b951-d872f2087c98
13 files changed