Consolidate RenderText adjacent word selection model code.

ui/gfx/render_text_linux.cc

 // Copyright (c) 2012 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_linux.h"
 
 #include <pango/pangocairo.h>
 #include <algorithm>
 #include <string>
 #include <vector>
@@ skipping 164 matching lines @@
     run = (direction == CURSOR_RIGHT) ?
         run->next : GSListPrevious(current_line_->runs, run);
     if (!run)
       return EdgeSelectionModel(direction);
   }
   PangoItem* item = reinterpret_cast<PangoLayoutRun*>(run->data)->item;
   return IsForwardMotion(direction, item) ?
       FirstSelectionModelInsideRun(item) : LastSelectionModelInsideRun(item);
 }
 
-SelectionModel RenderTextLinux::AdjacentWordSelectionModel(
-    const SelectionModel& selection,
-    VisualCursorDirection direction) {
-  if (obscured())
-    return EdgeSelectionModel(direction);
-
-  base::i18n::BreakIterator iter(text(), base::i18n::BreakIterator::BREAK_WORD);
-  bool success = iter.Init();
-  DCHECK(success);
-  if (!success)
-    return selection;
-
-  SelectionModel cur(selection);
-  for (;;) {
-    cur = AdjacentCharSelectionModel(cur, direction);
-    GSList* run = GetRunContainingCaret(cur);
-    if (!run)
-      break;
-    PangoItem* item = reinterpret_cast<PangoLayoutRun*>(run->data)->item;
-    size_t cursor = cur.caret_pos();
-    if (IsForwardMotion(direction, item) ?
-        iter.IsEndOfWord(cursor) : iter.IsStartOfWord(cursor))
-      break;
-  }
-
-  return cur;
-}
-
 ui::Range RenderTextLinux::GetGlyphBounds(size_t index) {
   PangoRectangle pos;
   pango_layout_index_to_pos(layout_, TextIndexToLayoutIndex(index), &pos);
   // TODO(derat): Support fractional ranges for subpixel positioning?
   return ui::Range(PANGO_PIXELS(pos.x), PANGO_PIXELS(pos.x + pos.width));
 }
 
 std::vector<Rect> RenderTextLinux::GetSubstringBounds(const ui::Range& range) {
   DCHECK_LE(range.GetMax(), text().length());
   if (range.is_empty())
@@ skipping 278 matching lines @@
                                           int glyph_index) const {
   return LayoutIndexToTextIndex(run->item->offset +
                                 run->glyphs->log_clusters[glyph_index]);
 }
 
 RenderText* RenderText::CreateInstance() {
   return new RenderTextLinux;
 }
 
 }  // namespace gfx