Oilpan: Change Persistent<> data members to Member<> in HitTestResult.

Source/core/page/MouseEventWithHitTestResults.h

 /*
    Copyright (C) 2000 Simon Hausmann <hausmann@kde.org>
    Copyright (C) 2006 Apple Computer, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
@@ skipping 11 matching lines @@
 #define MouseEventWithHitTestResults_h
 
 #include "core/rendering/HitTestResult.h"
 #include "platform/PlatformMouseEvent.h"
 
 namespace WebCore {
 
 class Scrollbar;
 
 class MouseEventWithHitTestResults {
+    STACK_ALLOCATED();
 public:
     MouseEventWithHitTestResults(const PlatformMouseEvent&, const HitTestResult&);
 
     const PlatformMouseEvent& event() const { return m_event; }
     const HitTestResult& hitTestResult() const { return m_hitTestResult; }
     LayoutPoint localPoint() const { return m_hitTestResult.localPoint(); }
     Scrollbar* scrollbar() const { return m_hitTestResult.scrollbar(); }
     bool isOverLink() const;
     bool isOverWidget() const { return m_hitTestResult.isOverWidget(); }
     Node* targetNode() const { return m_hitTestResult.targetNode(); }
 
 private:
     PlatformMouseEvent m_event;
     HitTestResult m_hitTestResult;
 };
 
 } // namespace WebCore
 
 #endif // MouseEventWithHitTestResults_h