[Fetch API] |(new Response(stream)).body| should return |stream|

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

Index: third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp b/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
index 77a1ba35d16d1580acad09417f8f384d6ade9af8..0776cae1fc553af576fdac673a58ead27ab1e85c 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchRequestData.cpp
@@ -12,7 +12,6 @@
 #include "modules/credentialmanager/PasswordCredential.h"
 #include "modules/fetch/BodyStreamBuffer.h"
 #include "modules/fetch/DataConsumerHandleUtil.h"
-#include "modules/fetch/DataConsumerTee.h"
 #include "modules/fetch/FetchBlobDataConsumerHandle.h"
 #include "modules/fetch/FetchHeaderList.h"
 #include "platform/HTTPNames.h"
@@ -70,10 +69,11 @@ FetchRequestData* FetchRequestData::clone(ScriptState* scriptState)
 {
     FetchRequestData* request = FetchRequestData::cloneExceptBody();
     if (m_buffer) {
-        OwnPtr<FetchDataConsumerHandle> dest1, dest2;
-        DataConsumerTee::create(scriptState->getExecutionContext(), m_buffer->releaseHandle(), &dest1, &dest2);
-        m_buffer = new BodyStreamBuffer(scriptState, std::move(dest1));
-        request->m_buffer = new BodyStreamBuffer(scriptState, std::move(dest2));
+        BodyStreamBuffer* new1 = nullptr;
+        BodyStreamBuffer* new2 = nullptr;
+        m_buffer->tee(&new1, &new2);
+        m_buffer = new1;
+        request->m_buffer = new2;
     }
     return request;
 }