[Streams] Pass WebDataConsumerHandle when the response arrives.

Source/core/loader/ThreadableLoaderClient.h

Index: Source/core/loader/ThreadableLoaderClient.h
diff --git a/Source/core/loader/ThreadableLoaderClient.h b/Source/core/loader/ThreadableLoaderClient.h
index 8a7e42c9f18803a14c21599d153ef01e22df9eb4..397cb32b674f095675c0d10c3563d1bcf821687f 100644
--- a/Source/core/loader/ThreadableLoaderClient.h
+++ b/Source/core/loader/ThreadableLoaderClient.h
@@ -32,8 +32,10 @@
 #define ThreadableLoaderClient_h
 
 #include "platform/heap/Handle.h"
+#include "public/platform/WebDataConsumerHandle.h"
 #include "wtf/FastAllocBase.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
@@ -46,7 +48,7 @@ namespace blink {
     public:
         virtual void didSendData(unsigned long long /*bytesSent*/, unsigned long long /*totalBytesToBeSent*/) { }
 
-        virtual void didReceiveResponse(unsigned long /*identifier*/, const ResourceResponse&) { }
+        virtual void didReceiveResponse(unsigned long /*identifier*/, const ResourceResponse&, PassOwnPtr<WebDataConsumerHandle>) { }
         virtual void didReceiveData(const char*, unsigned /*dataLength*/) { }
         virtual void didReceiveCachedMetadata(const char*, int /*dataLength*/) { }
         virtual void didFinishLoading(unsigned long /*identifier*/, double /*finishTime*/) { }