CANCELED: Make ComputeNodeBeforePosition() to return const Node*

third_party/WebKit/Source/core/editing/Position.h

 /*
  * Copyright (C) 2004, 2006, 2008 Apple 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 118 matching lines @@
   //   - BeforeChildren  0
   //   - BeforeAnchor    0
   //   - AfterChildren   last editing offset in anchor node
   //   - AfterAnchor     last editing offset in anchor node
   // Editing operations will change in anchor node rather than nodes around
   // anchor node.
   int ComputeEditingOffset() const;
 
   // These are convenience methods which are smart about whether the position is
   // neighbor anchored or parent anchored
-  Node* ComputeNodeBeforePosition() const;
+  const Node* ComputeNodeBeforePosition() const;
   Node* ComputeNodeAfterPosition() const;
 
   // Returns node as |Range::firstNode()|. This position must be a
   // |PositionAnchorType::OffsetInAhcor| to behave as |Range| boundary point.
   Node* NodeAsRangeFirstNode() const;
 
   // Similar to |nodeAsRangeLastNode()|, but returns a node in a range.
   Node* NodeAsRangeLastNode() const;
 
   // Returns a node as past last as same as |Range::pastLastNode()|. This
@@ skipping 133 matching lines @@
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::Position&);
 void showTree(const blink::Position*);
 #endif
 
 #endif  // Position_h