Add 'stream' to XMLHttpRequest response type.

Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp

Index: Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp b/Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp
index 2ea73f37a56097f44b86824cb0810ffd565cf4ce..43de1089017c411c80a31cfb8098fac48a3cca8b 100644
--- a/Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp
+++ b/Source/bindings/core/v8/custom/V8XMLHttpRequestCustom.cpp
@@ -38,11 +38,13 @@
 #include "bindings/core/v8/V8Document.h"
 #include "bindings/core/v8/V8FormData.h"
 #include "bindings/core/v8/V8HTMLDocument.h"
+#include "bindings/core/v8/V8ReadableStream.h"
 #include "bindings/core/v8/V8Stream.h"
 #include "bindings/core/v8/custom/V8ArrayBufferCustom.h"
 #include "bindings/core/v8/custom/V8ArrayBufferViewCustom.h"
 #include "core/dom/Document.h"
 #include "core/inspector/InspectorInstrumentation.h"
+#include "core/streams/ReadableStream.h"
 #include "core/streams/Stream.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/xml/XMLHttpRequest.h"
@@ -132,7 +134,14 @@ void V8XMLHttpRequest::responseAttributeGetterCustom(const v8::PropertyCallbackI
 
     case XMLHttpRequest::ResponseTypeLegacyStream:
         {
-            Stream* stream = xmlHttpRequest->responseStream();
+            Stream* stream = xmlHttpRequest->responseLegacyStream();
+            v8SetReturnValueFast(info, stream, xmlHttpRequest);
+            return;
+        }
+
+    case XMLHttpRequest::ResponseTypeStream:
+        {
+            ReadableStream* stream = xmlHttpRequest->responseStream();
             v8SetReturnValueFast(info, stream, xmlHttpRequest);
             return;
         }