Merge pull request #914 from agl/issue907

Eliminate the “not-supported” option for tokenBinding.status

index.bs

@@ -2030,7 +2030,7 @@ Note: The {{CollectedClientData}} may be extended in the future. Therefore it's
         DOMString id;
     };
 
-    enum TokenBindingStatus { "present", "supported", "not-supported" };
+    enum TokenBindingStatus { "present", "supported" };
 </xmp>
 
 <div dfn-type="dict-member" dfn-for="CollectedClientData">
@@ -2048,17 +2048,14 @@ Note: The {{CollectedClientData}} may be extended in the future. Therefore it's
         the syntax defined by [[RFC6454]].
 
     :   <dfn>tokenBinding</dfn>
-    ::  This member contains information about the state of the [=Token Binding=] protocol used when communicating with the
-        [=[RP]=].
+    ::  This OPTIONAL member contains information about the state of the [=Token Binding=] protocol used when communicating
+        with the [=[RP]=]. Its absence indicates that the client doesn't support token binding.
 
         <div dfn-type="dict-member" dfn-for="TokenBinding">
             :   <dfn>status</dfn>
             ::  This member is one of the following:
 
                 <div dfn-type="enum-value" dfn-for="TokenBindingStatus">
-                    :   <dfn>not-supported</dfn>
-                    ::  Indicates the client does not support token binding.
-
                     :   <dfn>supported</dfn>
                     ::  Indicates the client supports token binding, but it was not negotiated when communicating with the [=[RP]=].