Consolidate icon loading on ChromeOS

chrome/browser/ui/webui/fileicon_source_chromeos.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 CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_CHROMEOS_H_
-#define CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_CHROMEOS_H_
-#pragma once
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
-
-// A DataSource for chrome://fileicon/ URLs, but reads from
-// resources instead of disk. Allows for parameterization
-// via chrome://fileicon/path.ext?size=[small|medium|large]
-class FileIconSourceCros : public ChromeURLDataManager::DataSource {
- public:
-  FileIconSourceCros();
-
-  // Overridden from ChromeURLDataManager::DataSource.
-  virtual void StartDataRequest(const std::string& url,
-                                bool is_incognito,
-                                int request_id) OVERRIDE;
-  virtual std::string GetMimeType(const std::string&) const OVERRIDE;
-
- private:
-  virtual ~FileIconSourceCros();
-
-  DISALLOW_COPY_AND_ASSIGN(FileIconSourceCros);
-};
-
-#endif  // CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_CHROMEOS_H_