stub impl of linux,mac icon loader/manager

chrome/browser/icon_loader_win.h

-// Copyright (c) 2009 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_ICON_LOADER_WIN_H_
-#define CHROME_BROWSER_ICON_LOADER_WIN_H_
-
-#include "chrome/browser/icon_loader.h"
-
-class MessageLoop;
-
-class IconLoaderWin : public IconLoader {
- public:
-  IconLoaderWin(const FilePath& path, IconSize size, Delegate* delegate);
-
-  virtual ~IconLoaderWin();
-
-  // IconLoader implementation.
-  virtual void Start();
-
- private:
-  void ReadIcon();
-
-  void NotifyDelegate();
-
-  // The message loop object of the thread in which we notify the delegate.
-  MessageLoop* target_message_loop_;
-
-  FilePath path_;
-
-  IconSize icon_size_;
-
-  SkBitmap* bitmap_;
-
-  Delegate* delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(IconLoaderWin);
-};
-
-#endif  // CHROME_BROWSER_ICON_LOADER_WIN_H_