Add support for multiple icon sizes for Mac platform apps

chrome/browser/ui/views/aura/launcher/launcher_updater.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_UPDATER_H_
 #define CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 64 matching lines @@
   // Returns the title of the browser and/or tab identified by |id|.
   static string16 GetTitleByID(ash::LauncherID id);
 
   // Returns the LauncherUpdater managing the launcher with the specified
   // id. If |id| corresponds to an app tab, |tab| is set appropriately.
   static const LauncherUpdater* GetLauncherByID(ash::LauncherID id,
                                                 TabContentsWrapper** tab);
 
   // Sets the image for an app tab. This is intended to be invoked from the
   // AppIconLoader.
-  void SetAppImage(TabContentsWrapper* tab, SkBitmap* image);
+  void SetAppImage(TabContentsWrapper* tab, const SkBitmap* image);
 
   // Sets the AppIconLoader, taking ownership of |loader|. This is intended for
   // testing.
   void SetAppIconLoaderForTest(AppIconLoader* loader);
 
   // TabStripModel overrides:
   virtual void ActiveTabChanged(TabContentsWrapper* old_contents,
                                 TabContentsWrapper* new_contents,
                                 int index,
                                 bool user_gesture) OVERRIDE;
@@ skipping 81 matching lines @@
   // Used to load the image for an app tab.
   scoped_ptr<AppIconLoader> app_icon_loader_;
 
   // Existing instances.
   static Instances* instances_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherUpdater);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_