Change SelectionStartEnd() returning values instead of assigning into ref args.

third_party/WebKit/Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 1541 matching lines @@
   return first_text_box_ ? first_text_box_->Y().ToFloat() : 0;
 }
 
 void LayoutText::SetSelectionState(SelectionState state) {
   LayoutObject::SetSelectionState(state);
 
   if (CanUpdateSelectionOnRootLineBoxes()) {
     if (state == SelectionStart || state == SelectionEnd ||
         state == SelectionBoth) {
       int start_pos, end_pos;
-      SelectionStartEnd(start_pos, end_pos);
+      std::tie(start_pos, end_pos) = SelectionStartEnd();
       if (GetSelectionState() == SelectionStart) {
         end_pos = TextLength();
 
         // to handle selection from end of text to end of line
         if (start_pos && start_pos == end_pos)
           start_pos = end_pos - 1;
       } else if (GetSelectionState() == SelectionEnd) {
         start_pos = 0;
       }
 
@@ skipping 445 matching lines @@
     return LayoutRect();
 
   // Now calculate startPos and endPos for painting selection.
   // We include a selection while endPos > 0
   int start_pos, end_pos;
   if (GetSelectionState() == SelectionInside) {
     // We are fully selected.
     start_pos = 0;
     end_pos = TextLength();
   } else {
-    SelectionStartEnd(start_pos, end_pos);
+    std::tie(start_pos, end_pos) = SelectionStartEnd();
     if (GetSelectionState() == SelectionStart)
       end_pos = TextLength();
     else if (GetSelectionState() == SelectionEnd)
       start_pos = 0;
   }
 
   LayoutRect rect;
 
   if (start_pos == end_pos)
     return rect;
@@ skipping 91 matching lines @@
   LayoutRect rect = LayoutRect(
       IntRect(FirstRunX(), FirstRunY(), lines_box.Width(), lines_box.Height()));
   LayoutBlock* block = ContainingBlock();
   if (block && HasTextBoxes())
     block->AdjustChildDebugRect(rect);
 
   return rect;
 }
 
 }  // namespace blink