Use the extension icon for extension omnibox results instead of the generic

chrome/browser/gtk/location_bar_view_gtk.h

Index: chrome/browser/gtk/location_bar_view_gtk.h
diff --git a/chrome/browser/gtk/location_bar_view_gtk.h b/chrome/browser/gtk/location_bar_view_gtk.h
index da87cdcf793fb9f8edf395e7f681da8e188d5220..870e4155a6c7f91a3fd67b214ece71e1ab1293dc 100644
--- a/chrome/browser/gtk/location_bar_view_gtk.h
+++ b/chrome/browser/gtk/location_bar_view_gtk.h
@@ -362,6 +362,7 @@ class LocationBarViewGtk : public AutocompleteEditController,
 
   // Area on the left shown when in tab to search mode.
   GtkWidget* tab_to_search_box_;
+  GtkWidget* tab_to_search_magnifier_;
   GtkWidget* tab_to_search_full_label_;
   GtkWidget* tab_to_search_partial_label_;
 
@@ -417,6 +418,9 @@ class LocationBarViewGtk : public AutocompleteEditController,
   // Indicate if |tab_to_search_hint_| should be shown.
   bool show_keyword_hint_;
 
+  // The last search keyword that was shown via the |tab_to_search_box_|.
+  std::wstring last_keyword_;
+
   DISALLOW_COPY_AND_ASSIGN(LocationBarViewGtk);
 };