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

third_party/WebKit/Source/core/layout/api/LineLayoutText.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LineLayoutText_h
 #define LineLayoutText_h
 
 #include "core/layout/LayoutText.h"
 #include "core/layout/api/LineLayoutItem.h"
 #include "platform/LayoutUnit.h"
@@ skipping 91 matching lines @@
               HashSet<const SimpleFontData*>* fallback_fonts = nullptr,
               FloatRect* glyph_bounds = nullptr) const {
     return ToText()->Width(from, len, x_pos, text_direction, first_line,
                            fallback_fonts, glyph_bounds);
   }
 
   float HyphenWidth(const Font& font, TextDirection text_direction) {
     return ToText()->HyphenWidth(font, text_direction);
   }
 
-  void SelectionStartEnd(int& spos, int& epos) const {
-    return ToText()->SelectionStartEnd(spos, epos);
+  std::pair<int, int> SelectionStartEnd() const {
+    return ToText()->SelectionStartEnd();
   }
 
   unsigned TextStartOffset() const { return ToText()->TextStartOffset(); }
 
   float MinLogicalWidth() const { return ToText()->MinLogicalWidth(); }
 
  private:
   LayoutText* ToText() { return ToLayoutText(GetLayoutObject()); }
   const LayoutText* ToText() const { return ToLayoutText(GetLayoutObject()); }
 };
 
 }  // namespace blink
 
 #endif  // LineLayoutText_h