Add support for multi resolution icons

ui/base/resource/resource_bundle.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 UI_BASE_RESOURCE_RESOURCE_BUNDLE_H_
 #define UI_BASE_RESOURCE_RESOURCE_BUNDLE_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 214 matching lines @@
   // comments for ReloadSharedInstance().
   void UnloadLocaleResources();
 
   // Initialize all the gfx::Font members if they haven't yet been initialized.
   void LoadFontsIfNecessary();
 
 #if defined(USE_BASE_DATA_PACK)
   // Returns the full pathname of the main resources file to load.  May return
   // an empty string if no main resources data files are found.
   static FilePath GetResourcesFilePath();
+
+  static FilePath GetLargeIconResourcesFilePath();
 #endif
 
   // Returns the full pathname of the locale file to load.  May return an empty
   // string if no locale data files are found.
   static FilePath GetLocaleFilePath(const std::string& app_locale);
 
   // Returns a handle to bytes from the resource |module|, without doing any
   // processing or interpretation of the resource. Returns whether we
   // successfully read the resource.  Caller does not own the data returned
   // through this method and must not modify the data pointed to by |bytes|.
   static RefCountedStaticMemory* LoadResourceBytes(DataHandle module,
                                                    int resource_id);
 
   // Creates and returns a new SkBitmap given the data file to look in and the
   // resource id.  It's up to the caller to free the returned bitmap when
   // done.
   static SkBitmap* LoadBitmap(DataHandle dll_inst, int resource_id);
 
   // Returns an empty image for when a resource cannot be loaded. This is a
   // bright red bitmap.
   gfx::Image* GetEmptyImage();
 
   // Class level lock.  Used to protect internal data structures that may be
   // accessed from other threads (e.g., images_).
   scoped_ptr<base::Lock> lock_;
 
   // Handles for data sources.
   DataHandle resources_data_;
+  DataHandle large_icon_resources_data_;
   DataHandle locale_resources_data_;
 
   // References to extra data packs loaded via AddDataPackToSharedInstance.
   std::vector<LoadedDataPack*> data_packs_;
 
   // Cached images. The ResourceBundle caches all retrieved images and keeps
   // ownership of the pointers.
   typedef std::map<int, gfx::Image*> ImageMap;
   ImageMap images_;
 
@@ skipping 10 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ResourceBundle);
 };
 
 }  // namespace ui
 
 // TODO(beng): Someday, maybe, get rid of this.
 using ui::ResourceBundle;
 
 #endif  // UI_BASE_RESOURCE_RESOURCE_BUNDLE_H_