Third parties should not pretend to be first parties

ACTION-116
ISSUE-123

Proposal: add an additional requirement to the TC document in section
4.3. This replaces a similar provision which Matthias encouraged me to
remove from the header spec since it makes more sense in TC than TPE.

> A third party MUST NOT falsely represent themselves as a first party,
> whether using the methods of expression described in
> [[!TRACKING-PREFERENCE-EXPRESSION]] or otherwise.

The HTML for 4.3 (up to but not including 4.3.1) with this addition is:

~~~~~

<h3>Compliance by a third party</h3>
			
 <p class="note">This section consists of proposed text that is meant to
address <a
href="http://www.w3.org/2011/tracking-protection/track/issues/19">ISSUE-19</a>
and <a
href="http://www.w3.org/2011/tracking-protection/track/issues/39">ISSUE-39</a>
 and is pending discussion and <strong>[PENDING REVIEW]</strong>.</p>

<p>If the operator of a third-party domain receives a communication to
which a [DNT-ON] header is attached:</p>
<ol>
<li>that operator MUST NOT collect, share, or use information related to
that
communication outside of the Exceptions as defined
within this standard and any explicitly-granted Exemptions, provided in
accordance with the requirements of this standard;</li>
<li> that operator MUST NOT use information about previous communications
in which the operator was a third party, outside of the explicitly
expressed Exceptions as defined within this standard;</li>
<li> that operator [MUST NOT or SHOULD NOT] retain information about
previous communications in which the operator was a third party, outside
of the explicitly expressed Exceptions as defined within this standard.</li>
</ol>

<p>> A third party MUST NOT falsely represent themselves as a first
party, whether using the methods of expression described in
[[!TRACKING-PREFERENCE-EXPRESSION]] or otherwise.</p>

~~~~~