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

third_party/WebKit/Source/core/editing/serializers/Serialization.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008, 2009, 2010, 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Igalia S.L.
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 393 matching lines @@
 
   Document* tagged_document = Document::Create();
   tagged_document->SetContextFeatures(document.GetContextFeatures());
 
   Element* root = Element::Create(QualifiedName::Null(), tagged_document);
   root->AppendChild(tagged_fragment);
   tagged_document->AppendChild(root);
 
   const EphemeralRange range(
       Position::AfterNode(node_before_context).ParentAnchoredEquivalent(),
-      Position::BeforeNode(node_after_context).ParentAnchoredEquivalent());
+      Position::BeforeNode(*node_after_context).ParentAnchoredEquivalent());
 
   Node* common_ancestor = range.CommonAncestorContainer();
   HTMLElement* special_common_ancestor =
       AncestorToRetainStructureAndAppearanceWithNoLayoutObject(common_ancestor);
 
   // When there's a special common ancestor outside of the fragment, we must
   // include it as well to preserve the structure and appearance of the
   // fragment. For example, if the fragment contains TD, we need to include the
   // enclosing TABLE tag as well.
   DocumentFragment* fragment = DocumentFragment::Create(document);
@@ skipping 332 matching lines @@
   text_node->appendData(text_next->data());
   if (text_next->parentNode())  // Might have been removed by mutation event.
     text_next->remove(exception_state);
 }
 
 template class CORE_TEMPLATE_EXPORT CreateMarkupAlgorithm<EditingStrategy>;
 template class CORE_TEMPLATE_EXPORT
     CreateMarkupAlgorithm<EditingInFlatTreeStrategy>;
 
 }  // namespace blink