[e] (0) Mention the fingerprinting issue on window.navigator

Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=10375

git-svn-id: http://svn.whatwg.org/webapps@5481 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -66041,7 +66041,13 @@ <h4 id=client-identification><span class=secno>7.4.1 </span>Client identificatio
 
    <!-- vendorSub: Mozilla and Safari only; always returns "" -->
 
-  </dl></div>
+  </dl><p class=warning>Any information in this API that varies from user
+  to user can be used to profile the user. In fact, if enough such
+  information is available, a user can actually be uniquely
+  identified. For this reason, user agent implementors are strongly
+  urged to include as little information in this API as possible.</p>
+
+  </div>
 
 
   <h4 id=custom-handlers><span class=secno>7.4.2 </span>Custom scheme and content handlers</h4>

index

@@ -66041,7 +66041,13 @@ interface <dfn id=navigatorabilities>NavigatorAbilities</dfn> {
 
    <!-- vendorSub: Mozilla and Safari only; always returns "" -->
 
-  </dl></div>
+  </dl><p class=warning>Any information in this API that varies from user
+  to user can be used to profile the user. In fact, if enough such
+  information is available, a user can actually be uniquely
+  identified. For this reason, user agent implementors are strongly
+  urged to include as little information in this API as possible.</p>
+
+  </div>
 
 
   <h4 id=custom-handlers><span class=secno>7.4.2 </span>Custom scheme and content handlers</h4>

source

@@ -74848,6 +74848,12 @@ interface <dfn>NavigatorAbilities</dfn> {
 
   </dl>
 
+  <p class="warning">Any information in this API that varies from user
+  to user can be used to profile the user. In fact, if enough such
+  information is available, a user can actually be uniquely
+  identified. For this reason, user agent implementors are strongly
+  urged to include as little information in this API as possible.</p>
+
   </div>