Do not zero-initialize RawPtr.

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index e0301a0034d9d5e7edd6564342e4facd19597c63..0c2bdf5792c989fc441c7a436a81d71eac239cf3 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -3592,7 +3592,7 @@ bool EventHandler::handleTouchEvent(const PlatformTouchEvent& event)
     typedef HashSet<RefPtr<EventTarget> > EventTargetSet;
     struct {
         // The touches corresponding to the particular change state this struct instance represents.
-        RefPtrWillBeRawPtr<TouchList> m_touches;
+        RefPtrWillBeMember<TouchList> m_touches;
         // Set of targets involved in m_touches.
         EventTargetSet m_targets;
     } changedTouches[PlatformTouchPoint::TouchStateEnd];