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

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 194 matching lines @@
   // synchronous layout caused by spell checking (see crbug.com/517298).
   GetFrame().GetDocument()->UpdateStyleAndLayoutIgnorePendingStylesheets();
 
   DocumentLifecycle::DisallowTransitionScope disallow_transition(
       GetFrame().GetDocument()->Lifecycle());
 
   bool is_text_field = false;
   TextControlElement* enclosing_text_control_element = nullptr;
   if (!IsTextControlElement(*element)) {
     enclosing_text_control_element =
-        EnclosingTextControl(Position::FirstPositionInNode(element));
+        EnclosingTextControl(Position::FirstPositionInNode(*element));
   }
   element =
       enclosing_text_control_element ? enclosing_text_control_element : element;
   Element* parent = element;
   if (IsTextControlElement(*element)) {
     TextControlElement* text_control = ToTextControlElement(element);
     parent = text_control;
     element = text_control->InnerEditorElement();
     if (!element)
       return;
@@ skipping 304 matching lines @@
                "SpellChecker::markMisspellingsAfterReplaceSelectionCommand");
 
   const EphemeralRange& inserted_range = cmd.InsertedRange();
   if (inserted_range.IsNull())
     return;
 
   Node* node = cmd.EndingSelection().RootEditableElement();
   if (!node)
     return;
 
-  EphemeralRange paragraph_range(Position::FirstPositionInNode(node),
+  EphemeralRange paragraph_range(Position::FirstPositionInNode(*node),
                                  Position::LastPositionInNode(node));
   TextCheckingParagraph text_to_check(inserted_range, paragraph_range);
   ChunkAndMarkAllMisspellings(text_to_check);
 }
 
 void SpellChecker::ChunkAndMarkAllMisspellings(
     const TextCheckingParagraph& full_paragraph_to_check) {
   if (full_paragraph_to_check.IsEmpty())
     return;
   const EphemeralRange& paragraph_range =
@@ skipping 750 matching lines @@
       if (!input.IsFocusedElementInDocument())
         return false;
     }
   }
   HTMLElement* element =
       Traversal<HTMLElement>::FirstAncestorOrSelf(*position.AnchorNode());
   return element && element->IsSpellCheckingEnabled();
 }
 
 }  // namespace blink