[Mac] Detect control-key changes in autocomplete field.

chrome/browser/autocomplete/autocomplete_edit_view_mac.h

Index: chrome/browser/autocomplete/autocomplete_edit_view_mac.h
diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_mac.h b/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
index ac0c712db5f900e1d11cd6227906a8dc3dfb0b4a..e564706e0e6487f605ff9833824be18754e91183 100644
--- a/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_mac.h
@@ -86,8 +86,11 @@ class AutocompleteEditViewMac : public AutocompleteEditView {
 
   // Helper functions for use from AutocompleteEditHelper Objective-C
   // class.
-  void OnUpOrDownKeyPressed(bool up, bool by_page);
+
+  // Trivial wrappers forwarding to |model_| methods.
+  void OnControlKeyChanged(bool pressed);
   void OnEscapeKeyPressed();
+  void OnUpOrDownKeyPressed(bool up, bool by_page);
 
   // Called when editing begins in the field, and before the results
   // of any editing are communicated to |model_|.