Linux: Simplify omnibox selection code and stop taking back selection.

chrome/browser/autocomplete/autocomplete_edit_view_gtk.h

Index: chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
index ff6f3d27ec6b9b6d65765be66dac8e7f711e6d37..384e868abf893879c1d14a6ad86acf474fb47784 100644
--- a/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
@@ -362,10 +362,6 @@ class AutocompleteEditViewGtk : public AutocompleteEditView,
   // it, we pass this string to SavePrimarySelection()).
   std::string selected_text_;
 
-  // Has the current value of |selected_text_| been saved as the PRIMARY
-  // selection?
-  bool selection_saved_;
-
   // ID of the signal handler for "mark-set" on |text_buffer_|.
   gulong mark_set_handler_id_;