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

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

 // 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.
 
 #ifndef FetchRequestData_h
 #define FetchRequestData_h
 
 #include "platform/heap/Handle.h"
 #include "platform/network/EncodedFormData.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/Referrer.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerRequest.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class BodyStreamBuffer;
 class ExecutionContext;
 class FetchHeaderList;
 class PasswordCredential;
 class SecurityOrigin;
+class ScriptState;
 class WebServiceWorkerRequest;
 
 class FetchRequestData final : public GarbageCollectedFinalized<FetchRequestData> {
     WTF_MAKE_NONCOPYABLE(FetchRequestData);
 public:
     enum Tainting { BasicTainting, CORSTainting, OpaqueTainting };
 
     static FetchRequestData* create();
-    static FetchRequestData* create(ExecutionContext*, const WebServiceWorkerRequest&);
+    static FetchRequestData* create(ScriptState*, const WebServiceWorkerRequest&);
     // Call Request::refreshBody() after calling clone() or pass().
-    FetchRequestData* clone(ExecutionContext*);
-    FetchRequestData* pass(ExecutionContext*);
+    FetchRequestData* clone(ScriptState*);
+    FetchRequestData* pass(ScriptState*);
     ~FetchRequestData();
 
     void setMethod(AtomicString method) { m_method = method; }
     const AtomicString& method() const { return m_method; }
     void setURL(const KURL& url) { m_url = url; }
     const KURL& url() const { return m_url; }
     bool unsafeRequestFlag() const { return m_unsafeRequestFlag; }
     void setUnsafeRequestFlag(bool flag) { m_unsafeRequestFlag = flag; }
     WebURLRequest::RequestContext context() const { return m_context; }
     void setContext(WebURLRequest::RequestContext context) { m_context = context; }
@@ skipping 61 matching lines @@
     Tainting m_responseTainting;
     Member<BodyStreamBuffer> m_buffer;
     String m_mimeType;
     String m_integrity;
     RefPtr<EncodedFormData> m_attachedCredential;
 };
 
 } // namespace blink
 
 #endif // FetchRequestData_h