From 0ec8576e68ca720bd0140ae9cfe6b472b299435e Mon Sep 17 00:00:00 2001
From: Raymes Khoury <raymes@chromium.org>
Date: Mon, 9 Oct 2017 16:04:18 +1100
Subject: [PATCH 1/2] Add Feature Policy integration for WebMidi

---
 index.html | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/index.html b/index.html
index 920259f..5aaf391 100644
--- a/index.html
+++ b/index.html
@@ -142,6 +142,19 @@ <h2>Terminology</h2>
     <section>
       <h2>Obtaining Access to MIDI Devices</h2>
 
+      <section>
+        <h2>Feature Policy Integration</h2>
+        <p>
+          <a data-lt="Navigator.requestMIDIAccess">requestMIDIAccess</a> is a <a data-cite="FEATURE-POLICY#policy-controlled-feature">policy-controlled feature</a>, as defined by <a data-cite="FEATURE-POLICY">Feature Policy</a>.
+        </p>
+        <p>
+          The <a data-cite="FEATURE-POLICY#feature-name">feature name</a> for <a data-lt="Navigator.requestMIDIAccess">requestMIDIAccess</a> is <dfn data-lt="midi-fp" data-lt-noDefault><code>midi</code></dfn>.
+        </p>
+        <p>
+          The <a data-cite="FEATURE-POLICY#default-allowlist">default allowlist</a> for <a data-lt="Navigator.requestMIDIAccess">requestMIDIAccess</a> is <code>["self"]</code>.
+        </p>
+      </section>
+
       <section data-dfn-for="Navigator">
           <h2>Extensions to the <dfn>Navigator</dfn> interface</h2>
 
@@ -182,6 +195,14 @@ <h2>Extensions to the <dfn>Navigator</dfn> interface</h2>
               <ol>
                 <li><p>Let <var>promise</var> be a new Promise object and <var>resolver</var> be its associated resolver.</p></li>
                 <li><p>Return <var>promise</var> and run the following steps asynchronously.</p></li>
+                <li><p>Let <var>document</var> be the calling context's <a data-cite="!DOM#concept-document">Document</a>.</p></li>
+                <li>
+                  <p>
+                    If <var>document</var> is not <a data-cite="!HTML#allowed-to-use">allowed to use</a> the
+                    <a data-cite="FEATURE-POLICY#policy-controlled-feature">policy-controlled feature</a> named
+                    <a data-lt="midi-fp" data-lt-noDefault>midi</a>, jump to the step labeled <em>failure</em> below.
+                  </p>
+                </li>
 
                 <li><p>
                   Optionally, e.g. based on a previously-established user

From 66762f1e7f3d27ea23102544573f2b7f145b59f4 Mon Sep 17 00:00:00 2001
From: Raymes Khoury <raymes@chromium.org>
Date: Tue, 24 Oct 2017 17:40:25 +1100
Subject: [PATCH 2/2] Describe that a SecurityError should be returned if the
 request is denied by feature policy

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 5aaf391..3cda7c1 100644
--- a/index.html
+++ b/index.html
@@ -242,7 +242,7 @@ <h2>Extensions to the <dfn>Navigator</dfn> interface</h2>
 
                 <li><p><em><b>failure</b></em>: Let <var>error</var> be a new <a>DOMException</a>.
                   This exception's .name should be <code>"SecurityError"</code> if the
-                  user or their security settings denied the application from creating a MIDIAccess instance with the requested options, <code>"AbortError"</code> if the page is going to be closed for a user navigation, <code>"InvalidStateError"</code> if the underlying systems raise any errors, or otherwise it should be <code>"NotSupportedError"</code>.</p></li>
+                  user or their security settings denied the application from creating a MIDIAccess instance with the requested options, or if the error is the result of <var>document</var> not being <a data-cite="!HTML#allowed-to-use">allowed to use</a> the feature,  <code>"AbortError"</code> if the page is going to be closed for a user navigation, <code>"InvalidStateError"</code> if the underlying systems raise any errors, or otherwise it should be <code>"NotSupportedError"</code>.</p></li>
                 <li><p>Call <var>resolver</var>'s <code>reject(value)</code> method with <var>error</var> as value argument.</p></li>
               </ol>