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

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

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google 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
@@ skipping 261 matching lines @@
                   .DeepEquivalent();
 
     // If start is in the middle of a text node, split.
     if (!start_style->CollapseWhiteSpace() &&
         start.OffsetInContainerNode() > 0) {
       int start_offset = start.OffsetInContainerNode();
       Text* start_text = ToText(start.ComputeContainerNode());
       SplitTextNode(start_text, start_offset);
       GetDocument().UpdateStyleAndLayoutTree();
 
-      start = Position::FirstPositionInNode(start_text);
+      start = Position::FirstPositionInNode(*start_text);
       if (is_start_and_end_on_same_node) {
         DCHECK_GE(end.OffsetInContainerNode(), start_offset);
         end = Position(start_text, end.OffsetInContainerNode() - start_offset);
       }
       if (is_start_and_end_of_last_paragraph_on_same_node) {
         DCHECK_GE(end_of_last_paragraph.OffsetInContainerNode(), start_offset);
         end_of_last_paragraph =
             Position(start_text, end_of_last_paragraph.OffsetInContainerNode() -
                                      start_offset);
       }
@@ skipping 60 matching lines @@
   const ComputedStyle* style =
       ComputedStyleOfEnclosingTextNode(end_of_next_paragraph_position);
   if (!style)
     return end_of_next_paragraph;
 
   Text* const end_of_next_paragraph_text =
       ToText(end_of_next_paragraph_position.ComputeContainerNode());
   if (!style->PreserveNewline() ||
       !end_of_next_paragraph_position.OffsetInContainerNode() ||
       !IsNewLineAtPosition(
-          Position::FirstPositionInNode(end_of_next_paragraph_text)))
+          Position::FirstPositionInNode(*end_of_next_paragraph_text)))
     return end_of_next_paragraph;
 
   // \n at the beginning of the text node immediately following the current
   // paragraph is trimmed by moveParagraphWithClones. If endOfNextParagraph was
   // pointing at this same text node, endOfNextParagraph will be shifted by one
   // paragraph. Avoid this by splitting "\n"
   SplitTextNode(end_of_next_paragraph_text, 1);
   GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
   Text* const previous_text =
       end_of_next_paragraph_text->previousSibling() &&
@@ skipping 37 matching lines @@
 }
 
 HTMLElement* ApplyBlockElementCommand::CreateBlockElement() const {
   HTMLElement* element = CreateHTMLElement(GetDocument(), tag_name_);
   if (inline_style_.length())
     element->setAttribute(styleAttr, inline_style_);
   return element;
 }
 
 }  // namespace blink