Make Response::body return v8-extra based stream behind flag

third_party/WebKit/Source/modules/fetch/Response.h

Index: third_party/WebKit/Source/modules/fetch/Response.h
diff --git a/third_party/WebKit/Source/modules/fetch/Response.h b/third_party/WebKit/Source/modules/fetch/Response.h
index be06f2c5c4096e5faa3f1a5023a134a7efd4a21e..8350c69cfffa35a9907793341f4b4c9150d1e395 100644
--- a/third_party/WebKit/Source/modules/fetch/Response.h
+++ b/third_party/WebKit/Source/modules/fetch/Response.h
@@ -38,9 +38,9 @@ public:
     static Response* create(ScriptState*, ExceptionState&);
     static Response* create(ScriptState*, ScriptValue body, const Dictionary&, ExceptionState&);
 
-    static Response* create(ExecutionContext*, PassOwnPtr<FetchDataConsumerHandle> bodyHandle, const String& contentType, const ResponseInit&, ExceptionState&);
+    static Response* create(ScriptState*, PassOwnPtr<FetchDataConsumerHandle> bodyHandle, const String& contentType, const ResponseInit&, ExceptionState&);
     static Response* create(ExecutionContext*, FetchResponseData*);
-    static Response* create(ExecutionContext*, const WebServiceWorkerResponse&);
+    static Response* create(ScriptState*, const WebServiceWorkerResponse&);
 
     static Response* createClone(const Response&);
 
@@ -58,14 +58,11 @@ public:
     Headers* headers() const;
 
     // From Response.idl:
-    Response* clone(ExceptionState&);
+    Response* clone(ScriptState*, ExceptionState&);
 
     // ActiveScriptWrappable
     bool hasPendingActivity() const final;
 
-    // ActiveDOMObject
-    void stop() override;
-
     // Does not call response.setBlobDataHandle().
     void populateWebServiceWorkerResponse(WebServiceWorkerResponse& /* response */);