Implement some missing TODOs in the new NaCl docs.

BUG=None
R=binji@chromium.org

Review URL: https://codereview.chromium.org/39013005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230775 0039d316-1c4b-4281-b951-d872f2087c98
Added networkingPrivate API access to selected apps.

BUG=293683
TEST=none

Review URL: https://codereview.chromium.org/32823020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230776 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230776