Oilpan: move Range object to the oilpan heap.

Source/core/editing/VisibleSelection.h

 /*
  * Copyright (C) 2004 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 75 matching lines @@
 
     bool isBaseFirst() const { return m_baseIsFirst; }
     bool isDirectional() const { return m_isDirectional; }
     void setIsDirectional(bool isDirectional) { m_isDirectional = isDirectional; }
 
     void appendTrailingWhitespace();
 
     bool expandUsingGranularity(TextGranularity granularity);
 
     // We don't yet support multi-range selections, so we only ever have one range to return.
-    PassRefPtr<Range> firstRange() const;
+    PassRefPtrWillBeRawPtr<Range> firstRange() const;
 
     // FIXME: Most callers probably don't want this function, but are using it
     // for historical reasons.  toNormalizedRange contracts the range around
     // text, and moves the caret upstream before returning the range.
-    PassRefPtr<Range> toNormalizedRange() const;
+    PassRefPtrWillBeRawPtr<Range> toNormalizedRange() const;
 
     Element* rootEditableElement() const;
     bool isContentEditable() const;
     bool rendererIsEditable() const;
     bool isContentRichlyEditable() const;
     // Returns a shadow tree node for legacy shadow trees, a child of the
     // ShadowRoot node for new shadow trees, or 0 for non-shadow trees.
     Node* nonBoundaryShadowTreeRootNode() const;
 
     VisiblePosition visiblePositionRespectingEditingBoundary(const LayoutPoint& localPoint, Node* targetNode) const;
@@ skipping 65 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::VisibleSelection&);
 void showTree(const WebCore::VisibleSelection*);
 #endif
 
 #endif // VisibleSelection_h