[Mac] Fix keyword editor-related crashes

chrome/browser/cocoa/keyword_editor_cocoa_controller.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.
 
 #import <Cocoa/Cocoa.h>
 
 #include "app/table_model_observer.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/search_engines/edit_search_engine_controller.h"
 #include "chrome/browser/search_engines/keyword_editor_controller.h"
@@ skipping 26 matching lines @@
 
   // TableModelObserver overrides. Invalidate icon cache.
   virtual void OnModelChanged();
   virtual void OnItemsChanged(int start, int length);
   virtual void OnItemsAdded(int start, int length);
   virtual void OnItemsRemoved(int start, int length);
 
   // Lazily converts the image at the given row and caches it in |iconImages_|.
   NSImage* GetImageForRow(int row);
 
- protected:
-  // Invalidates a range of the |iconImages_| cache.
-  void InvalidateIconCache(int start, int length);
-
  private:
   KeywordEditorCocoaController* controller_;
 
   // Stores strong NSImage refs for icons. If an entry is NULL, it will be
   // created in GetImageForRow().
   scoped_nsobject<NSPointerArray> iconImages_;
 
   DISALLOW_COPY_AND_ASSIGN(KeywordEditorModelObserver);
 };
 
@@ skipping 33 matching lines @@
 @interface KeywordEditorCocoaController (TestingAPI)
 
 // Instances of this class are managed, use +showKeywordEditor:.
 - (id)initWithProfile:(Profile*)profile;
 
 // Returns a reference to the shared instance for the given profile,
 // or nil if there is none.
 + (KeywordEditorCocoaController*)sharedInstanceForProfile:(Profile*)profile;
 
 @end