Use GetDisplayText() instead of text() for rendering text.

ui/gfx/render_text_harfbuzz.cc

 // Copyright 2014 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.
 
 #include "ui/gfx/render_text_harfbuzz.h"
 
 #include <limits>
 
 #include "base/i18n/bidi_line_iterator.h"
 #include "base/i18n/break_iterator.h"
@@ skipping 1435 matching lines @@
     update_grapheme_iterator_ = false;
     grapheme_iterator_.reset(new base::i18n::BreakIterator(
         GetDisplayText(),
         base::i18n::BreakIterator::BREAK_CHARACTER));
     if (!grapheme_iterator_->Init())
       grapheme_iterator_.reset();
   }
   return grapheme_iterator_.get();
 }
 
-size_t RenderTextHarfBuzz::TextIndexToGivenTextIndex(
-    const base::string16& given_text,
-    size_t index) {
-  DCHECK(given_text == layout_text() || given_text == display_text());
-  DCHECK_LE(index, text().length());
-  ptrdiff_t i = obscured() ? UTF16IndexToOffset(text(), 0, index) : index;
-  CHECK_GE(i, 0);
-  // Clamp indices to the length of the given layout or display text.
-  return std::min<size_t>(given_text.length(), i);
-}
-
 internal::TextRunList* RenderTextHarfBuzz::GetRunList() {
   DCHECK(!update_layout_run_list_);
   DCHECK(!update_display_run_list_);
   return text_elided() ? display_run_list_.get() : &layout_run_list_;
 }
 
 const internal::TextRunList* RenderTextHarfBuzz::GetRunList() const {
   return const_cast<RenderTextHarfBuzz*>(this)->GetRunList();
 }
 
 }  // namespace gfx