update permission request language

index.bs

@@ -290,17 +290,17 @@ method steps are:
      1. If |destination_entry| exists in the underlying file system:
        1. [=/Reject=] |result| with an "{{InvalidModificationError}}" {{DOMException}}
            and abort.
-  1. Let |permissionStatusSource| be the result of [=requesting access=]
-     given <b>[=this=]</b> and {{"readwrite"}}.
-     If that throws an exception, [=reject=] |result| with that exception and abort.
-  1. If |permissionStatusSource| is not {{PermissionState/"granted"}},
-     [=/reject=] |result| with a "{{NotAllowedError}}" {{DOMException}} and abort.
+
+  1. Let |accessSource| be the result of running |entry|'s
+     [=entry/request access=] given "`readwrite`".
+  1. If |accessSource| is not "{{PermissionState/granted}}", reject |result| with a
+     "{{NotAllowedError}}" {{DOMException}} and abort.
   1. If |new_directory| is not [=entry/parent=]:
-    1. Let |permissionStatusDest| be the result of [=requesting access=]
-       given |new_directory| and {{"readwrite"}}.
-       If that throws an exception, [=reject=] |result| with that exception and abort.
-    1. If |permissionStatusDest| is not {{PermissionState/"granted"}},
-       [=/reject=] |result| with a "{{NotAllowedError}}" {{DOMException}} and abort.
+    1. Let |accessDest| be the result of running |new_directory|'s
+       [=entry/request access=] given "`readwrite`".
+    1. If |accessDest| is not "{{PermissionState/granted}}", reject |result| with a
+       "{{NotAllowedError}}" {{DOMException}} and abort.
+
   1. Let |lockResultSource| be the result of [=file entry/lock/take|taking a lock=]
      with "`exclusive`" on |entry|.
   1. If |lockResultSource| is false, [=reject=] |result| with a