[giow] (3) Improve compatibility for <embed hidden>

Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=15133
Affected topics: Rendering

git-svn-id: http://svn.whatwg.org/webapps@7453 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -249,7 +249,7 @@
 
   <header class=head id=head><p><a class=logo href=http://www.whatwg.org/><img alt=WHATWG height=101 src=/images/logo width=101></a></p>
    <hgroup><h1 class=allcaps>HTML</h1>
-    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 10 October 2012</h2>
+    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 11 October 2012</h2>
    </hgroup><dl><dt><strong>Web developer edition:</strong></dt>
     <dd><strong><a href=http://developers.whatwg.org/>http://developers.whatwg.org/</a></strong></dd>
     <dt>Multiple-page version:</dt>
@@ -97190,7 +97190,9 @@ <h4 id=hidden-elements><span class=secno>14.3.1 </span>Hidden elements</h4>
 input[type=hidden i], link, menu[type=context i], meta, noembed, noframes,
 param, rp, script, source, style, track, title {
   display: none;
-}</pre>
+}
+
+embed[hidden] { display: inline; height: 0; width: 0; }</pre> <!-- because for legacy reasons it still needs to instantiate the plugin -->
 
   <p>The user agent is expected to force the 'display' property of
   <code><a href=#the-noscript-element>noscript</a></code> elements for whom <a href=#concept-n-script title=concept-n-script>scripting is enabled</a> to compute to

index

@@ -249,7 +249,7 @@
 
   <header class=head id=head><p><a class=logo href=http://www.whatwg.org/><img alt=WHATWG height=101 src=/images/logo width=101></a></p>
    <hgroup><h1 class=allcaps>HTML</h1>
-    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 10 October 2012</h2>
+    <h2 class="no-num no-toc">Living Standard &mdash; Last Updated 11 October 2012</h2>
    </hgroup><dl><dt><strong>Web developer edition:</strong></dt>
     <dd><strong><a href=http://developers.whatwg.org/>http://developers.whatwg.org/</a></strong></dd>
     <dt>Multiple-page version:</dt>
@@ -97190,7 +97190,9 @@ document.body.appendChild(text);
 input[type=hidden i], link, menu[type=context i], meta, noembed, noframes,
 param, rp, script, source, style, track, title {
   display: none;
-}</pre>
+}
+
+embed[hidden] { display: inline; height: 0; width: 0; }</pre> <!-- because for legacy reasons it still needs to instantiate the plugin -->
 
   <p>The user agent is expected to force the 'display' property of
   <code><a href=#the-noscript-element>noscript</a></code> elements for whom <a href=#concept-n-script title=concept-n-script>scripting is enabled</a> to compute to

source

@@ -112673,7 +112673,9 @@ document.body.appendChild(text);
 input[type=hidden i], link, menu[type=context i], meta, noembed, noframes,
 param, rp, script, source, style, track, title {
   display: none;
-}</pre>
+}
+
+embed[hidden] { display: inline; height: 0; width: 0; }</pre> <!-- because for legacy reasons it still needs to instantiate the plugin -->
 
   <p>The user agent is expected to force the 'display' property of
   <code>noscript</code> elements for whom <span