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

third_party/WebKit/Source/core/editing/EditingUtilities.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 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 637 matching lines @@
 }
 
 template <typename Strategy>
 PositionTemplate<Strategy> FirstEditablePositionAfterPositionInRootAlgorithm(
     const PositionTemplate<Strategy>& position,
     Node& highest_root) {
   DCHECK(!NeedsLayoutTreeUpdate(highest_root))
       << position << ' ' << highest_root;
   // position falls before highestRoot.
   if (position.CompareTo(PositionTemplate<Strategy>::FirstPositionInNode(
-          &highest_root)) == -1 &&
+          highest_root)) == -1 &&
       HasEditableStyle(highest_root))
-    return PositionTemplate<Strategy>::FirstPositionInNode(&highest_root);
+    return PositionTemplate<Strategy>::FirstPositionInNode(highest_root);
 
   PositionTemplate<Strategy> editable_position = position;
 
   if (position.AnchorNode()->GetTreeScope() != highest_root.GetTreeScope()) {
     Node* shadow_ancestor = highest_root.GetTreeScope().AncestorInThisScope(
         editable_position.AnchorNode());
     if (!shadow_ancestor)
       return PositionTemplate<Strategy>();
 
     editable_position = PositionTemplate<Strategy>::AfterNode(*shadow_ancestor);
@@ skipping 1229 matching lines @@
   Document& document = *p.GetDocument();
   DCHECK(!document.NeedsLayoutTreeUpdate());
 
   ShadowRoot* shadow_root = p.AnchorNode()->ContainingShadowRoot();
 
   if (shadow_root)
     scope = shadow_root;
   else
     scope = document.documentElement();
 
-  EphemeralRange range(Position::FirstPositionInNode(scope),
+  EphemeralRange range(Position::FirstPositionInNode(*scope),
                        p.ParentAnchoredEquivalent());
 
   return TextIterator::RangeLength(
       range.StartPosition(), range.EndPosition(),
       TextIteratorBehavior::AllVisiblePositionsRangeLengthBehavior());
 }
 
 EphemeralRange MakeRange(const VisiblePosition& start,
                          const VisiblePosition& end) {
   if (start.IsNull() || end.IsNull())
@@ skipping 258 matching lines @@
         return InputType::kDeleteSoftLineBackward;
       if (granularity == kParagraphBoundary)
         return InputType::kDeleteHardLineBackward;
       return InputType::kDeleteContentBackward;
     default:
       return InputType::kNone;
   }
 }
 
 }  // namespace blink