Integrate Permissions API changes

Helps with w3c/permissions#263

index.bs

@@ -47,6 +47,9 @@ urlPrefix: https://w3c.github.io/accelerometer/; spec: ACCELEROMETER
   type: dfn
     text: device coordinate system
     text: screen coordinate system
+urlPrefix: https://www.w3.org/TR/permissions/; spec: PERMISSIONS
+  type: dfn
+    text: name; url: dfn-name
 </pre>
 
 <pre class=biblio>
@@ -130,7 +133,11 @@ The <dfn id="gyroscope-sensor-type">Gyroscope</dfn> <a>sensor type</a>'s associa
 
 The <a>Gyroscope</a> has a <a>default sensor</a>, which is the device's main gyroscope sensor.
 
-The <a>Gyroscope</a> has an associated [=sensor permission name=] which is <a for="PermissionName" enum-value>"gyroscope"</a>.
+The <a>Gyroscope</a> is a [=powerful feature=] that is identified by the
+[=name=] "gyroscope", which is also its associated
+[=sensor permission name=]. Its [=powerful feature/permission revocation algorithm=] is the
+result of calling the [=generic sensor permission revocation algorithm=] with
+"gyroscope".
 
 The <a>Gyroscope</a> is a [=policy-controlled feature=] identified by the string "gyroscope". Its [=default allowlist=] is `'self'`.