Add support for multiple icon sizes for Mac platform apps

chrome/browser/ui/views/aura/launcher/launcher_icon_loader.h

 // Copyright (c) 2012 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_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_ICON_LOADER_H_
 #define CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_ICON_LOADER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 12 matching lines @@
  public:
   LauncherIconLoader(Profile* profile, ChromeLauncherDelegate* host);
   virtual ~LauncherIconLoader();
 
   // AppIconLoader:
   virtual std::string GetAppID(TabContentsWrapper* tab) OVERRIDE;
   virtual bool IsValidID(const std::string& id) OVERRIDE;
   virtual void FetchImage(const std::string& id) OVERRIDE;
 
   // 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;
 
  private:
   typedef std::map<int, std::string> ImageLoaderIDToExtensionIDMap;
 
   // Returns the extension for the specified tab.
   const Extension* GetExtensionForTab(TabContentsWrapper* tab);
 
   // Returns the extension by ID.
   const Extension* GetExtensionByID(const std::string& id);
 
   Profile* profile_;
 
   // ChromeLauncherDelegate we're associated with (and owned by).
   ChromeLauncherDelegate* host_;
 
   // Used to load images.
   scoped_ptr<ImageLoadingTracker> image_loader_;
 
   // Maps from id from the ImageLoadingTracker to the extension id.
   ImageLoaderIDToExtensionIDMap map_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherIconLoader);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_ICON_LOADER_H_