diff --git a/dom/fetch/Fetch.cpp b/dom/fetch/Fetch.cpp
index 6a6b4faaf8..42c9fc74f9 100644
--- a/dom/fetch/Fetch.cpp
+++ b/dom/fetch/Fetch.cpp
@@ -1000,5 +1000,24 @@ template
 void
 FetchBody<Response>::SetMimeType();
 
+template <class Derived>
+void
+FetchBody<Derived>::GetBody(JSContext* aCx,
+                            JS::MutableHandle<JSObject*> aMessage)
+{
+  // TODO
+}
+
+template
+void
+FetchBody<Request>::GetBody(JSContext* aCx,
+                            JS::MutableHandle<JSObject*> aMessage);
+
+template
+void
+FetchBody<Response>::GetBody(JSContext* aCx,
+                             JS::MutableHandle<JSObject*> aMessage);
+
+
 } // namespace dom
 } // namespace mozilla
diff --git a/dom/fetch/Fetch.h b/dom/fetch/Fetch.h
index 73d5c15199..bc2df62689 100644
--- a/dom/fetch/Fetch.h
+++ b/dom/fetch/Fetch.h
@@ -147,6 +147,10 @@ public:
     return ConsumeBody(CONSUME_TEXT, aRv);
   }
 
+  void
+  GetBody(JSContext* aCx,
+          JS::MutableHandle<JSObject*> aMessage);
+
   // Utility public methods accessed by various runnables.
 
   void
diff --git a/dom/fetch/Request.h b/dom/fetch/Request.h
index 8c01cbd799..8a22f1340b 100644
--- a/dom/fetch/Request.h
+++ b/dom/fetch/Request.h
@@ -128,6 +128,8 @@ public:
   void
   GetBody(nsIInputStream** aStream) { return mRequest->GetBody(aStream); }
 
+  using FetchBody::GetBody;
+
   void
   SetBody(nsIInputStream* aStream) { return mRequest->SetBody(aStream); }
 
diff --git a/dom/fetch/Response.h b/dom/fetch/Response.h
index fa2ced87d8..61f1427f93 100644
--- a/dom/fetch/Response.h
+++ b/dom/fetch/Response.h
@@ -105,6 +105,8 @@ public:
   void
   GetBody(nsIInputStream** aStream) { return mInternalResponse->GetBody(aStream); }
 
+  using FetchBody::GetBody;
+
   static already_AddRefed<Response>
   Error(const GlobalObject& aGlobal);
 
diff --git a/dom/webidl/Response.webidl b/dom/webidl/Response.webidl
index 08f31fe29a..adaa70d66d 100644
--- a/dom/webidl/Response.webidl
+++ b/dom/webidl/Response.webidl
@@ -30,6 +30,11 @@ interface Response {
 };
 Response implements Body;
 
+// This should be part of Body but we don't want to expose body to request yet.
+partial interface Response {
+  readonly attribute ReadableStream? body;
+};
+
 dictionary ResponseInit {
   unsigned short status = 200;
   ByteString statusText = "OK";