Oilpan: convert remaining dom + page Element refs to transition types.

Source/core/page/PrintContext.cpp

 /*
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2007 Apple 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 191 matching lines @@
     while (object && !object->isBoxModelObject())
         object = object->parent();
     if (!object)
         return 0;
     return toRenderBoxModelObject(object);
 }
 
 int PrintContext::pageNumberForElement(Element* element, const FloatSize& pageSizeInPixels)
 {
     // Make sure the element is not freed during the layout.
-    RefPtrWillBeRawPtr<Element> elementRef(element);
+    RefPtrWillBeRawPtr<Element> protect(element);
     element->document().updateLayout();
 
     RenderBoxModelObject* box = enclosingBoxModelObject(element->renderer());
     if (!box)
         return -1;
 
     LocalFrame* frame = element->document().frame();
     FloatRect pageRect(FloatPoint(0, 0), pageSizeInPixels);
     PrintContext printContext(frame);
     printContext.begin(pageRect.width(), pageRect.height());
@@ skipping 150 matching lines @@
         printContext.spoolPage(graphicsContext, pageIndex, pageWidth);
         graphicsContext.restore();
 
         currentHeight += pageSizeInPixels.height() + 1;
     }
 
     graphicsContext.restore();
 }
 
 }