Editorial: add <div algorithm> wrappers to Header class

Related to: #1526.

Author: dlrobertson

fetch.bs

@@ -6569,6 +6569,7 @@ new Headers(meta2);
 
 <hr>
 
+<div algorithm>
 <p>To <dfn for=Headers>validate</dfn> a  <a for=/>header</a> (<var>name</var>, <var>value</var>) for
 a {{Headers}} object <var>headers</var>:
 
@@ -6587,10 +6588,12 @@ a {{Headers}} object <var>headers</var>:
 
  <li><p>Return true.
 </ol>
+</div>
 
 <p class=note>Steps for "<code>request-no-cors</code>" are not shared as you cannot have a fake
 value (for {{Headers/delete()}}) that always succeeds in <a>CORS-safelisted request-header</a>.
 
+<div algorithm>
 <p>To <dfn export for=Headers id=concept-headers-append>append</dfn> a <a for=/>header</a>
 (<var>name</var>, <var>value</var>) to a {{Headers}} object <var>headers</var>, run these steps:
 
@@ -6623,7 +6626,9 @@ value (for {{Headers/delete()}}) that always succeeds in <a>CORS-safelisted requ
  <li><p>If <var>headers</var>'s <a for=Headers>guard</a> is "<code>request-no-cors</code>", then
  <a for=Headers>remove privileged no-CORS request-headers</a> from <var>headers</var>.
 </ol>
+</div>
 
+<div algorithm>
 <p>To <dfn export for=Headers id=concept-headers-fill>fill</dfn> a {{Headers}} object
 <var>headers</var> with a given object <var>object</var>, run these steps:
 
@@ -6643,7 +6648,9 @@ value (for {{Headers/delete()}}) that always succeeds in <a>CORS-safelisted requ
  <var>key</var> → <var>value</var> of <var>object</var>, <a for=Headers>append</a> (<var>key</var>,
  <var>value</var>) to <var>headers</var>.
 </ol>
+</div>
 
+<div algorithm>
 <p>To
 <dfn for=Headers id=concept-headers-remove-privileged-no-cors-request-headers>remove privileged no-CORS request-headers</dfn>
 from a {{Headers}} object (<var>headers</var>), run these steps:
@@ -6659,7 +6666,9 @@ from a {{Headers}} object (<var>headers</var>), run these steps:
 </ol>
 
 <p class=note>This is called when headers are modified by unprivileged code.
+</div>
 
+<div algorithm>
 <p>The
 <dfn id=dom-headers export for=Headers constructor lt="Headers(init)"><code>new Headers(<var>init</var>)</code></dfn>
 constructor steps are:
@@ -6669,16 +6678,20 @@ constructor steps are:
 
  <li><p>If <var>init</var> is given, then <a for=Headers>fill</a> <a>this</a> with <var>init</var>.
 </ol>
+</div>
 
+<div algorithm>
 <p>The <dfn export for=Headers method><code>append(<var>name</var>, <var>value</var>)</code></dfn>
 method steps are to <a for=Headers>append</a> (<var>name</var>, <var>value</var>) to <a>this</a>.
+</div>
 
+<div algorithm>
 <p>The <dfn export for=Headers method><code>delete(<var>name</var>)</code></dfn> method steps are:
 
 <ol>
  <li>
-  <p>If <a for=Headers>validating</a> (<var>name</var>, ``) for <var>headers</var> returns false,
-  then return.
+  <p>If <a for=Headers>validating</a> (<var>name</var>, ``) for <a>this</a> returns false, then
+  return.
 
   <p class=note>Passing a dummy <a>header value</a> ought not to have any negative repercussions.
 
@@ -6696,7 +6709,9 @@ method steps are to <a for=Headers>append</a> (<var>name</var>, <var>value</var>
  <li><p>If <a>this</a>'s <a for=Headers>guard</a> is "<code>request-no-cors</code>", then
  <a for=Headers>remove privileged no-CORS request-headers</a> from <a>this</a>.
 </ol>
+</div>
 
+<div algorithm>
 <p>The <dfn export for=Headers method><code>get(<var>name</var>)</code></dfn> method steps are:
 
 <ol>
@@ -6705,7 +6720,9 @@ method steps are to <a for=Headers>append</a> (<var>name</var>, <var>value</var>
  <li><p>Return the result of <a for="header list">getting</a> <var>name</var> from <a>this</a>'s
  <a for=Headers>header list</a>.
 </ol>
+</div>
 
+<div algorithm>
 <p>The <dfn export for=Headers method><code>has(<var>name</var>)</code></dfn> method steps are:
 
 <ol>
@@ -6714,15 +6731,17 @@ method steps are to <a for=Headers>append</a> (<var>name</var>, <var>value</var>
  <li><p>Return true if <a>this</a>'s <a for=Headers>header list</a>
  <a for="header list">contains</a> <var>name</var>; otherwise false.
 </ol>
+</div>
 
+<div algorithm>
 <p>The <dfn export for=Headers method><code>set(<var>name</var>, <var>value</var>)</code></dfn>
 method steps are:
 
 <ol>
  <li><p><a for="header value">Normalize</a> <var>value</var>.
 
- <li><p>If <a for=Headers>validating</a> (<var>name</var>, <var>value</var>) for <var>headers</var>
- returns false, then return.
+ <li><p>If <a for=Headers>validating</a> (<var>name</var>, <var>value</var>) for <a>this</a> returns
+ false, then return.
 
  <li><p>If <a>this</a>'s <a for=Headers>guard</a> is "<code>request-no-cors</code>" and
  (<var>name</var>, <var>value</var>) is not a <a>no-CORS-safelisted request-header</a>, then return.
@@ -6733,6 +6752,7 @@ method steps are:
  <li><p>If <a>this</a>'s <a for=Headers>guard</a> is "<code>request-no-cors</code>", then
  <a for=Headers>remove privileged no-CORS request-headers</a> from <a>this</a>.
 </ol>
+</div>
 
 <p>The <a>value pairs to iterate over</a> are the return value of running
 <a for="header list">sort and combine</a> with <a>this</a>'s <a for=Headers>header list</a>.