Support nonce and referrer policy in preload and Link headers

Both are already supported by Gecko, and WebKit and Chromium already support nonce.

source

@@ -14406,12 +14406,18 @@ interface <dfn interface>HTMLLinkElement</dfn> : <span>HTMLElement</span> {
    data-x="">link</code>")</dt>
    <dt><dfn data-x="link options integrity">integrity</dfn> (default the empty string)</dt>
    <dt><dfn data-x="link options type">type</dfn> (default the empty string)</dt>
+   <dt><dfn data-x="link options nonce">cryptographic nonce metadata</dfn> (default the empty
+   string)</dt>
    <dd>A string</dd>
 
    <dt><dfn data-x="link options crossorigin">crossorigin</dfn> (default <span
    data-x="attr-crossorigin-none">No CORS</span>)</dt>
    <dd>A <span>CORS settings attribute</span> state</dd>
 
+   <dt><dfn data-x="link options referrer policy">referrer policy</dfn> (default the empty
+   string)</dt>
+   <dd>A <span>referrer policy</span></dd>
+
    <dt><dfn data-x="link options source set">source set</dfn> (default null)</dt>
    <dd>Null or a  <span>source set</span></dd>
 
@@ -14457,6 +14463,10 @@ interface <dfn interface>HTMLLinkElement</dfn> : <span>HTMLElement</span> {
      <dd>the state of <var>el</var>'s <code data-x="attr-link-crossorigin">crossorigin</code>
      content attribute</dd>
 
+     <dt><span data-x="link options referrer policy">referrer policy</span></dt>
+     <dd>the state of <var>el</var>'s <code data-x="attr-link-referrerpolicy">referrerpolicy</code>
+     content attribute</dd>
+
      <dt><span data-x="link options source set">source set</span></dt>
      <dd><var>el</var>'s <span>source set</span></dd>
 
@@ -14475,6 +14485,9 @@ interface <dfn interface>HTMLLinkElement</dfn> : <span>HTMLElement</span> {
 
      <dt><span data-x="link options document">document</span></dt>
      <dd><var>document</var></dd>
+
+     <dt><span data-x="link options nonce">cryptographic nonce metadata</span></dt>
+     <dd>The current value of <var>el</var>'s <span>[[CryptographicNonce]]</span> internal slot</dd>
     </dl>
    </li>
 
@@ -14629,6 +14642,16 @@ interface <dfn interface>HTMLLinkElement</dfn> : <span>HTMLElement</span> {
    integrity">integrity</span> to <var>attribs</var>["<code
    data-x="attr-link-integrity">integrity</code>"].</p></li>
 
+   <li><p>If <var>attribs</var>["<code data-x="attr-link-referrerpolicy">referrerpolicy</code>"]
+   <span data-x="map exists">exists</span> and is an <span>ASCII case-insensitive</span> match for
+   some <span>referrer policy</span>, then set <var>options</var>'s <span data-x="link options
+   referrer policy">referrer policy</span> to that <span>referrer policy</span>.</p></li>
+
+   <li><p>If <var>attribs</var>["<code data-x="attr-nonce">nonce</code>"]
+   <span data-x="map exists">exists</span>, then set <var>options</var>'s <span data-x="link
+   options nonce">nonce</span> to <var>attribs</var>["<code
+   data-x="attr-nonce">nonce</code>"].</p></li>
+
    <li><p>If <var>attribs</var>["<code data-x="attr-link-type">type</code>"] <span data-x="map
    exists">exists</span>, then set <var>options</var>'s <span data-x="link options
    type">type</span> to <var>attribs</var>["<code data-x="attr-link-type">type</code>"].</p></li>
@@ -26533,6 +26556,15 @@ document.body.appendChild(wbr);</code></pre>
    data-x="concept-request-integrity-metadata">integrity metadata</span> to <var>options</var>'s
    <span data-x="link options integrity">integrity</span>.</p></li>
 
+   <li><p>Set <var>request</var>'s <span
+   data-x="concept-request-nonce-metadata">cryptographic nonce metadata</span> to
+   <var>options</var>'s <span
+   data-x="link options nonce">cryptographic nonce metadata</span>.</p></li>
+
+   <li><p>Set <var>request</var>'s <span
+   data-x="concept-request-referrer-policy">referrer policy</span> to <var>options</var>'s
+   <span data-x="link options referrer policy">referrer policy</span>.</p></li>
+
    <li><p>Let <var>entry</var> be a new <span>preload entry</span> whose
    <span data-x="preload integrity metadata">integrity metadata</span> is <var>options</var>'s
    <span data-x="link options integrity">integrity</span>.</p></li>