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

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

 /*
  * Copyright (C) 2005, 2006 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 151 matching lines @@
             .Collapse(Position::InParentAfterNode(*node_to_insert))
             .SetIsDirectional(EndingSelection().IsDirectional())
             .Build());
   } else if (pos.AnchorNode()->IsTextNode()) {
     // Split a text node
     Text* text_node = ToText(pos.AnchorNode());
     SplitTextNode(text_node, pos.ComputeOffsetInContainerNode());
     InsertNodeBefore(node_to_insert, text_node, editing_state);
     if (editing_state->IsAborted())
       return;
-    Position ending_position = Position::FirstPositionInNode(text_node);
+    Position ending_position = Position::FirstPositionInNode(*text_node);
 
     // Handle whitespace that occurs after the split
     GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
     // TODO(yosin) |isRenderedCharacter()| should be removed, and we should
     // use |VisiblePosition::characterAfter()|.
     if (!IsRenderedCharacter(ending_position)) {
       Position position_before_text_node(
           Position::InParentBeforeNode(*text_node));
       // Clear out all whitespace and insert one non-breaking space
       DeleteInsignificantTextDownstream(ending_position);
       // Deleting insignificant whitespace will remove textNode if it contains
       // nothing but insignificant whitespace.
       if (text_node->isConnected()) {
         InsertTextIntoNode(text_node, 0, NonBreakingSpaceString());
       } else {
         Text* nbsp_node =
             GetDocument().createTextNode(NonBreakingSpaceString());
         InsertNodeAt(nbsp_node, position_before_text_node, editing_state);
         if (editing_state->IsAborted())
           return;
-        ending_position = Position::FirstPositionInNode(nbsp_node);
+        ending_position = Position::FirstPositionInNode(*nbsp_node);
       }
     }
 
     SetEndingSelection(SelectionInDOMTree::Builder()
                            .Collapse(ending_position)
                            .SetIsDirectional(EndingSelection().IsDirectional())
                            .Build());
   }
 
   // Handle the case where there is a typing style.
@@ skipping 22 matching lines @@
     // block.
     SetEndingSelection(SelectionInDOMTree::Builder()
                            .Collapse(EndingSelection().End())
                            .Build());
   }
 
   RebalanceWhitespace();
 }
 
 }  // namespace blink