[Fetch API] Put body members directly on Response/Request

Source/modules/serviceworkers/FetchBodyStream.idl

Index: Source/modules/serviceworkers/FetchBodyStream.idl
diff --git a/Source/modules/serviceworkers/FetchBodyStream.idl b/Source/modules/serviceworkers/FetchBodyStream.idl
deleted file mode 100644
index 5e5bf66364f0996466af1439635dcee15ab674ca..0000000000000000000000000000000000000000
--- a/Source/modules/serviceworkers/FetchBodyStream.idl
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// http://fetch.spec.whatwg.org/#fetchbodystream
-[
-    RuntimeEnabled=ServiceWorker,
-    Exposed=ServiceWorker,
-    NoInterfaceObject,
-    ActiveDOMObject,
-    GarbageCollected,
-] interface FetchBodyStream {
-    [CallWith=ScriptState] Promise asArrayBuffer();
-    [CallWith=ScriptState] Promise asBlob();
-    [CallWith=ScriptState] Promise asJSON();
-    [CallWith=ScriptState] Promise asText();
-
-    // Still to be implemented.
-    // [CallWith=ScriptState] Promise asFormData();
-};
-