Expose request's body

fetch.bs

@@ -4387,6 +4387,7 @@ typedef (Blob or BufferSource or FormData or URLSearchParams or ReadableStream o
 <pre class=idl>[NoInterfaceObject,
  Exposed=(Window,Worker)]
 interface Body {
+  readonly attribute ReadableStream? body;
   readonly attribute boolean bodyUsed;
   [NewObject] Promise&lt;ArrayBuffer> arrayBuffer();
   [NewObject] Promise&lt;Blob> blob();
@@ -4414,6 +4415,9 @@ non-null and its <a for=body>stream</a> is
 non-null and its <a for=body>stream</a> is
 <a for=ReadableStream>locked</a>.
 
+<p>The <dfn attribute for=Body><code>body</code></dfn> attribute's getter must return null if
+<a for=Body>body</a> is null and <a for=Body>body</a>'s <a for=body>stream</a> otherwise.
+
 <p>The <dfn attribute for=Body><code>bodyUsed</code></dfn> attribute's getter must
 return true if <a for=Body>disturbed</a>, and false otherwise.
 
@@ -5034,7 +5038,6 @@ interface Response {
   readonly attribute boolean ok;
   readonly attribute ByteString statusText;
   [SameObject] readonly attribute Headers headers;
-  readonly attribute ReadableStream? body;
   [SameObject] readonly attribute Promise&lt;Headers> trailer;
 
   [NewObject] Response clone();
@@ -5215,10 +5218,6 @@ must return <a for=Response>response</a>'s
 <p>The <dfn attribute for=Response><code>headers</code></dfn> attribute's getter must
 return the associated {{Headers}} object.
 
-<p>The <dfn attribute for=Response><code>body</code></dfn> attribute's getter must return null if
-the associated <a for=Body>body</a> is null and the associated
-<a for=Body>body</a>'s <a for=body>stream</a> otherwise.
-
 <p>The <dfn attribute for=Response><code>trailer</code></dfn> attribute's getter must return the
 associated <a for=Response>trailer promise</a>.