Add support for multiple icon sizes for Mac platform apps

chrome/browser/extensions/extension_tab_helper.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_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_
 #pragma once
 
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
@@ skipping 104 matching lines @@
                              int callback_id);
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 
   // App extensions related methods:
 
   // Resets app_icon_ and if |extension| is non-null creates a new
   // ImageLoadingTracker to load the extension's image.
   void UpdateExtensionAppIcon(const Extension* extension);
 
   // 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;
 
   // WebstoreInlineInstaller::Delegate.
   virtual void OnInlineInstallSuccess(int install_id,
                                       int return_route_id) OVERRIDE;
   virtual void OnInlineInstallFailure(int install_id,
                                       int return_route_id,
                                       const std::string& error) OVERRIDE;
 
   // AppNotifyChannelSetup::Delegate.
@@ skipping 23 matching lines @@
 
   // Cached web app info data.
   WebApplicationInfo web_app_info_;
 
   TabContentsWrapper* wrapper_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionTabHelper);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_HELPER_H_