Mac: Modify Omnibox to notice when the window loses key, too.

chrome/browser/autocomplete/autocomplete_edit_view_mac.h

 // Copyright (c) 2009 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_EDIT_VIEW_MAC_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
@@ skipping 62 matching lines @@
   virtual void UpdatePopup();
   virtual void ClosePopup();
   virtual void OnTemporaryTextMaybeChanged(const std::wstring& display_text,
                                            bool save_original_selection);
   virtual bool OnInlineAutocompleteTextMaybeChanged(
       const std::wstring& display_text, size_t user_text_length);
   virtual void OnRevertTemporaryText();
   virtual void OnBeforePossibleChange();
   virtual bool OnAfterPossibleChange();
 
-  // Helper functions which forward to our private: model_.
+  // Helper functions which forward to |model_|, for use from
+  // AutocompleteEditHelper Objective-C class.
   void OnUpOrDownKeyPressed(bool up, bool by_page);
   void OnEscapeKeyPressed();
+  // Only forwards to |model_| if the field_ has focus.
   void OnSetFocus(bool f);
   void OnKillFocus();
   void AcceptInput(WindowOpenDisposition disposition, bool for_drop);
 
   // Helper for LocationBarBridge.
   void FocusLocation();
 
  private:
   // Returns the field's currently selected range.  Only valid if the
   // field has focus.
@@ skipping 28 matching lines @@
 
   // Tracking state before and after a possible change for reporting
   // to model_.
   NSRange selection_before_change_;
   std::wstring text_before_change_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewMac);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_MAC_H_