Implment BytesConsumer::tee

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

 // Copyright 2016 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 BytesConsumerForDataConsumerHandle_h
 #define BytesConsumerForDataConsumerHandle_h
 
 #include "modules/ModulesExport.h"
 #include "modules/fetch/BytesConsumer.h"
 #include "modules/fetch/FetchFormDataConsumerHandle.h"
@@ skipping 36 matching lines @@
     DECLARE_TRACE();
 
 private:
     void close();
     void error();
 
     std::unique_ptr<FetchDataConsumerHandle::Reader> m_reader;
     Member<BytesConsumer::Client> m_client;
     InternalState m_state = InternalState::Waiting;
     Error m_error;
+    bool m_isInTwoPhaseRead = false;
+    bool m_hasPendingError = false;
 };
 
 } // namespace blink
 
 #endif // BytesConsumerForDataConsumerHandle_h