Add support for multiple icon sizes for Mac platform apps

chrome/browser/extensions/extension_uninstall_dialog.h

 // Copyright (c) 2011 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_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 40 matching lines @@
 
   // The extension we are showing the dialog for.
   const Extension* extension_;
 
   // The extensions icon.
   SkBitmap icon_;
 
  private:
   // Sets the icon that will be used in the dialog. If |icon| is NULL, or
   // contains an empty bitmap, then we use a default icon instead.
-  void SetIcon(SkBitmap* icon);
+  void SetIcon(const gfx::Image* image);
 
   // ImageLoadingTracker::Observer:
-  virtual void OnImageLoaded(SkBitmap* image,
-                             const ExtensionResource& resource,
+  virtual void OnImageLoaded(const gfx::Image* image,
+                             const std::string& extension_id,
                              int index) OVERRIDE;
 
   // Displays the prompt. This should only be called after loading the icon.
   // The implementations of this method are platform-specific.
   virtual void Show() = 0;
 
   MessageLoop* ui_loop_;
 
   // Keeps track of extension images being loaded on the File thread for the
   // purpose of showing the dialog.
   ImageLoadingTracker tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUninstallDialog);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UNINSTALL_DIALOG_H_