[Streams] Pass WebDataConsumerHandle when the response arrives.

Source/core/page/EventSource.cpp

Index: Source/core/page/EventSource.cpp
diff --git a/Source/core/page/EventSource.cpp b/Source/core/page/EventSource.cpp
index 8f64c5464270ba1b478b66cb631950ebbb229c1f..a6902c89f0e13080d76e282ae0e0dcf440153fba 100644
--- a/Source/core/page/EventSource.cpp
+++ b/Source/core/page/EventSource.cpp
@@ -220,8 +220,9 @@ ExecutionContext* EventSource::executionContext() const
     return ActiveDOMObject::executionContext();
 }
 
-void EventSource::didReceiveResponse(unsigned long, const ResourceResponse& response)
+void EventSource::didReceiveResponse(unsigned long, const ResourceResponse& response, PassOwnPtr<WebDataConsumerHandle> handle)
 {
+    ASSERT_UNUSED(handle, !handle);
     ASSERT(m_state == CONNECTING);
     ASSERT(m_requestInFlight);