Revert 122412 - Enabled pressing TAB to traverse through the Omnibox results

chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc

Index: chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc	(revision 122471)
+++ chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.cc	(working copy)
@@ -483,8 +483,10 @@
   // extension, |match| and its contents.  So copy the relevant match out to
   // make sure it stays alive until the call completes.
   AutocompleteMatch match = model_->result().match_at(line);
+  string16 keyword;
+  const bool is_keyword_hint = model_->GetKeywordForMatch(match, &keyword);
   omnibox_view_->OpenMatch(match, disposition, GURL(), line,
-                           match.keyword);
+                           is_keyword_hint ? string16() : keyword);
 }
 
 const gfx::Image* OmniboxPopupViewGtk::IconForMatch(