Make Position::FirstPositionInNode() to take const Node& instead of Node*

third_party/WebKit/Source/core/editing/commands/InsertTextCommand.cpp

 /*
  * Copyright (C) 2005 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 40 matching lines @@
 
 Position InsertTextCommand::PositionInsideTextNode(
     const Position& p,
     EditingState* editing_state) {
   Position pos = p;
   if (IsTabHTMLSpanElementTextNode(pos.AnchorNode())) {
     Text* text_node = GetDocument().CreateEditingTextNode("");
     InsertNodeAtTabSpanPosition(text_node, pos, editing_state);
     if (editing_state->IsAborted())
       return Position();
-    return Position::FirstPositionInNode(text_node);
+    return Position::FirstPositionInNode(*text_node);
   }
 
   // Prepare for text input by looking at the specified position.
   // It may be necessary to insert a text node to receive characters.
   if (!pos.ComputeContainerNode()->IsTextNode()) {
     Text* text_node = GetDocument().CreateEditingTextNode("");
     InsertNodeAt(text_node, pos, editing_state);
     if (editing_state->IsAborted())
       return Position();
-    return Position::FirstPositionInNode(text_node);
+    return Position::FirstPositionInNode(*text_node);
   }
 
   return pos;
 }
 
 void InsertTextCommand::SetEndingSelectionWithoutValidation(
     const Position& start_position,
     const Position& end_position) {
   // We could have inserted a part of composed character sequence,
   // so we are basically treating ending selection as a range to avoid
@@ skipping 250 matching lines @@
     }
   }
   if (editing_state->IsAborted())
     return Position();
 
   // return the position following the new tab
   return Position::LastPositionInNode(span_element);
 }
 
 }  // namespace blink