Add support for multiple icon sizes for Mac platform apps

chrome/browser/extensions/app_shortcut_manager.h

Index: chrome/browser/extensions/app_shortcut_manager.h
diff --git a/chrome/browser/extensions/app_shortcut_manager.h b/chrome/browser/extensions/app_shortcut_manager.h
index 7f21f8810137c376cd2b93aa14d829647dbb3a2e..6d12696e00e6f6049aae583014b316a9f14e48f4 100644
--- a/chrome/browser/extensions/app_shortcut_manager.h
+++ b/chrome/browser/extensions/app_shortcut_manager.h
@@ -24,8 +24,8 @@ class AppShortcutManager : public ImageLoadingTracker::Observer,
   // load the application's icon, which is done when we start creating an
   // application's shortcuts. This method receives the icon, and completes
   // the process of installing the shortcuts.
-  virtual void OnImageLoaded(SkBitmap* image,
-                             const ExtensionResource& resource,
+  virtual void OnImageLoaded(const gfx::Image* image,
+                             const std::string& extension_id,
                              int index) OVERRIDE;
 
   // content::NotificationObserver