Enabled pressing TAB to cycle through the Omnibox results.

chrome/browser/autocomplete/autocomplete_popup_model.h

 // Copyright (c) 2011 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 CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
@@ skipping 52 matching lines @@
   // be updated forcibly even if the |line| is same as the current selected
   // line.
   // NOTE: This assumes the popup is open, and thus both old and new values for
   // the selected line should not be kNoMatch.
   void SetSelectedLine(size_t line, bool reset_to_default, bool force);
 
   // Called when the user hits escape after arrowing around the popup.  This
   // will change the selected line back to the default match and redraw.
   void ResetToDefaultMatch();
 
-  // Gets the selected keyword or keyword hint for the given match. If the match
-  // is already keyword, then the keyword will be returned directly. Otherwise,
-  // it returns GetKeywordForText(match.fill_into_edit, keyword).
-  bool GetKeywordForMatch(const AutocompleteMatch& match,
-                          string16* keyword) const;
-
-  // Gets the selected keyword or keyword hint for the given text. Returns
-  // true if |keyword| represents a keyword hint, or false if |keyword|
-  // represents a selected keyword. (|keyword| will always be set [though
-  // possibly to the empty string], and you cannot have both a selected keyword
-  // and a keyword hint simultaneously.)
-  bool GetKeywordForText(const string16& text, string16* keyword) const;
-
   // Immediately updates and opens the popup if necessary, then moves the
   // current selection down (|count| > 0) or up (|count| < 0), clamping to the
   // first or last result if necessary.  If |count| == 0, the selection will be
   // unchanged, but the popup will still redraw and modify the text in the
   // AutocompleteEditModel.
   void Move(int count);
 
   // Called when the user hits shift-delete.  This should determine if the item
   // can be removed from history, and if so, remove it and update the popup.
   void TryDeletingCurrentItem();
@@ skipping 31 matching lines @@
   // which should only be true when the popup is closed.
   size_t selected_line_;
 
   // The match the user has manually chosen, if any.
   AutocompleteResult::Selection manually_selected_match_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupModel);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_