Oilpan: move RenderObjects off heap.

Source/core/rendering/RenderView.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@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 27 matching lines @@
 class RenderQuote;
 
 // The root of the render tree, corresponding to the CSS initial containing block.
 // It's dimensions match that of the logical viewport (which may be different from
 // the visible viewport in fixed-layout mode), and it is always at position (0,0)
 // relative to the document (and so isn't necessarily in view).
 class RenderView final : public RenderBlockFlow {
 public:
     explicit RenderView(Document*);
     virtual ~RenderView();
-    virtual void trace(Visitor*) override;
     void willBeDestroyed() override;
 
     bool hitTest(const HitTestRequest&, HitTestResult&);
     bool hitTest(const HitTestRequest&, const HitTestLocation&, HitTestResult&);
 
     // Returns the total count of calls to HitTest, for testing.
     unsigned hitTestCount() const { return m_hitTestCount; }
 
     virtual const char* renderName() const override { return "RenderView"; }
 
@@ skipping 124 matching lines @@
     friend class ForceHorriblySlowRectMapping;
 
     bool shouldUsePrintingLayout() const;
 
     RenderObject* backgroundRenderer() const;
 
     virtual void invalidateDisplayItemClients(DisplayItemList*) const override;
 
     FrameView* m_frameView;
 
-    RawPtrWillBeMember<RenderObject> m_selectionStart;
-    RawPtrWillBeMember<RenderObject> m_selectionEnd;
+    RenderObject* m_selectionStart;
+    RenderObject* m_selectionEnd;
 
     int m_selectionStartPos;
     int m_selectionEndPos;
 
     LayoutUnit m_pageLogicalHeight;
     bool m_pageLogicalHeightChanged;
     LayoutState* m_layoutState;
     OwnPtr<RenderLayerCompositor> m_compositor;
     RefPtr<IntervalArena> m_intervalArena;
 
-    RawPtrWillBeMember<RenderQuote> m_renderQuoteHead;
+    RenderQuote* m_renderQuoteHead;
     unsigned m_layoutCounterCount;
 
     unsigned m_hitTestCount;
 
     class PendingSelection final {
         DISALLOW_ALLOCATION();
     public:
         PendingSelection();
         void setSelection(const FrameSelection&);
         void clear();
@@ skipping 38 matching lines @@
             m_paintInvalidationState->m_cachedOffsetsEnabled = true;
     }
 private:
     const PaintInvalidationState* m_paintInvalidationState;
     bool m_didDisable;
 };
 
 } // namespace blink
 
 #endif // RenderView_h