[giow] (3) Make document.write() a no-op on non-active documents.

Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=21875
Affected topics: HTML Syntax and Parsing

git-svn-id: http://svn.whatwg.org/webapps@7869 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -12074,6 +12074,9 @@ <h4 id=document.write()><span class=secno>3.4.3 </span><code title=dom-document-
 
    </li>
 
+   <li><p>If the <code><a href=#document>Document</a></code> object is not an <a href=#active-document>active document</a>, then abort
+   these steps.</li>
+
    <li>
 
     <p>If the <a href=#insertion-point>insertion point</a> is undefined and either the <code><a href=#document>Document</a></code>'s

index

@@ -12074,6 +12074,9 @@ plaintext     = *( %x0000-2029 / %x202F-2065 / %x206A-10FFFF )
 
    </li>
 
+   <li><p>If the <code><a href=#document>Document</a></code> object is not an <a href=#active-document>active document</a>, then abort
+   these steps.</li>
+
    <li>
 
     <p>If the <a href=#insertion-point>insertion point</a> is undefined and either the <code><a href=#document>Document</a></code>'s

source

@@ -12302,6 +12302,9 @@ plaintext     = *( %x0000-2029 / %x202F-2065 / %x206A-10FFFF )
 
    </li>
 
+   <li><p>If the <code>Document</code> object is not an <span>active document</span>, then abort
+   these steps.</p></li>
+
    <li>
 
     <p>If the <span>insertion point</span> is undefined and either the <code>Document</code>'s