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

third_party/WebKit/Source/core/layout/line/InlineTextBox.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
  *               All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 120 matching lines @@
   // See the corresponding code in InlineTextBox::getSelectionState.
   int e_pos = std::min(end_pos - start_, int(len_) + (IsLineBreak() ? 0 : 1));
   return (s_pos < e_pos);
 }
 
 SelectionState InlineTextBox::GetSelectionState() const {
   SelectionState state = GetLineLayoutItem().GetSelectionState();
   if (state == SelectionStart || state == SelectionEnd ||
       state == SelectionBoth) {
     int start_pos, end_pos;
-    GetLineLayoutItem().SelectionStartEnd(start_pos, end_pos);
+    std::tie(start_pos, end_pos) = GetLineLayoutItem().SelectionStartEnd();
     // The position after a hard line break is considered to be past its end.
     // See the corresponding code in InlineTextBox::isSelected.
     int last_selectable = Start() + Len() - (IsLineBreak() ? 1 : 0);
 
     // FIXME: Remove -webkit-line-break: LineBreakAfterWhiteSpace.
     int end_of_line_adjustment_for_css_line_break =
         GetLineLayoutItem().Style()->GetLineBreak() == kLineBreakAfterWhiteSpace
             ? -1
             : 0;
     bool start = (state != SelectionEnd && start_pos >= start_ &&
@@ skipping 343 matching lines @@
                           LayoutUnit /*lineBottom*/) const {
   InlineTextBoxPainter(*this).Paint(paint_info, paint_offset);
 }
 
 void InlineTextBox::SelectionStartEnd(int& s_pos, int& e_pos) const {
   int start_pos, end_pos;
   if (GetLineLayoutItem().GetSelectionState() == SelectionInside) {
     start_pos = 0;
     end_pos = GetLineLayoutItem().TextLength();
   } else {
-    GetLineLayoutItem().SelectionStartEnd(start_pos, end_pos);
+    std::tie(start_pos, end_pos) = GetLineLayoutItem().SelectionStartEnd();
     if (GetLineLayoutItem().GetSelectionState() == SelectionStart)
       end_pos = GetLineLayoutItem().TextLength();
     else if (GetLineLayoutItem().GetSelectionState() == SelectionEnd)
       start_pos = 0;
   }
 
   s_pos = std::max(start_pos - start_, 0);
   e_pos = std::min(end_pos - start_, (int)len_);
 }
 
@@ skipping 206 matching lines @@
   for (; printed_characters < kLayoutObjectCharacterOffset;
        printed_characters++)
     fputc(' ', stderr);
   fprintf(stderr, "(%d,%d) \"%s\"\n", Start(), Start() + Len(),
           value.Utf8().data());
 }
 
 #endif
 
 }  // namespace blink