Add supported tokens to relList and sandbox

Add the following:
* Reference to DOMTokenList's supported tokens in the DOM spec.
* Supported tokens to HTMLLinkElement's relList.
* Supported tokens to HTMLIFrameElement's sandbox.

Closes #340.

Author: yoavweiss

source

@@ -3058,6 +3058,7 @@ a.setAttribute('href', 'http://example.com/'); // change the content attribute d
      <li>The algorithm to <dfn data-noexport="" data-x="concept-node-clone">clone</dfn> a <code>Node</code>, and the concept of <dfn data-noexport="" data-x="concept-node-clone-ext">cloning steps</dfn> used by that algorithm</li>
      <li>The concept of <dfn data-noexport="">base URL change steps</dfn> and the definition of what happens when an element is <dfn data-noexport="">affected by a base URL change</dfn></li>
      <li>The concept of an element's <dfn data-noexport="" data-x="concept-id">unique identifier (ID)</dfn></li>
+     <li>The term <dfn data-noexport="" data-x="dom-domtokenlist-supported-tokens">supported tokens</dfn></li>
 
      <li>The concept of a DOM <dfn data-noexport="" data-x="concept-range">range</dfn>, and the terms <dfn data-noexport="" data-x="concept-range-start">start</dfn>, <dfn data-noexport="" data-x="concept-range-end">end</dfn>, and <dfn data-noexport="" data-x="concept-range-bp">boundary point</dfn> as applied to ranges.</li>
 
@@ -12047,6 +12048,11 @@ gave me some of the songs they wrote. I love sharing my music.&lt;/p>
   w-nodev>must</span> <span data-x="reflect">reflect</span> the <code
   data-x="attr-link-rel">rel</code> content attribute.</p>
 
+  <p><code data-x="dom-link-rellist">relList</code>'s <code>DOMTokenList</code>'s
+  <span data-x="dom-domtokenlist-supported-tokens">supported tokens</span> are the keywords defined
+  in <a href="#linkTypes">HTML link types</a> which are allowed on <code>link</code> elements and
+  supported by the user agent.</p>
+
   </div>
 
   <p>The <code>LinkStyle</code> interface is also implemented by this element. <ref spec=CSSOM></p>
@@ -27062,6 +27068,11 @@ href="?audio">audio&lt;/a> test instead.)&lt;/p></pre>
   <p>The IDL attributes <dfn><code data-x="dom-iframe-src">src</code></dfn>, <dfn><code data-x="dom-iframe-srcdoc">srcdoc</code></dfn>, <dfn><code data-x="dom-iframe-name">name</code></dfn>, <dfn><code data-x="dom-iframe-sandbox">sandbox</code></dfn>, and <dfn><code data-x="dom-iframe-seamless">seamless</code></dfn> must <span>reflect</span> the respective
   content attributes of the same name.</p>
 
+  <p>The <span data-x="dom-domtokenlist-supported-tokens">supported tokens</span> for
+  <code data-x="dom-iframe-sandbox">sandbox</code>'s <code>DOMSettableTokenList</code> are the
+  allowed values defined in the <code data-x="attr-iframe-sandbox">sandbox</code> attribute and
+  supported by the user agent.</p>
+
   <p>The <dfn><code data-x="dom-iframe-allowFullscreen">allowFullscreen</code></dfn> IDL attribute
   must <span>reflect</span> the <code data-x="attr-iframe-allowfullscreen">allowfullscreen</code>
   content attribute.</p>