More filesystem cleanup: convert URL-encoded-as-FilePath to actual URL, where

chrome/browser/extensions/extension_file_browser_private_api.h

 // Copyright (c) 2010 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_FILE_BROWSER_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_FILE_BROWSER_PRIVATE_API_H_
 #pragma once
 
 #include <string>
 
-#include "base/file_path.h"
+#include "base/platform_file.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
 
+class GURL;
+
 // Implements the Chrome Extension local File API.
 class RequestLocalFileSystemFunction
     : public AsyncExtensionFunction {
  public:
   RequestLocalFileSystemFunction();
 
  protected:
   virtual ~RequestLocalFileSystemFunction();
 
   // AsyncExtensionFunction overrides.
   virtual bool RunImpl() OVERRIDE;
 
  private:
   friend class LocalFileSystemCallbackDispatcher;
   void RespondSuccessOnUIThread(const std::string& name,
-                                const FilePath& path);
+                                const GURL& root);
   void RespondFailedOnUIThread(base::PlatformFileError error_code);
 
   DECLARE_EXTENSION_FUNCTION_NAME("fileBrowserPrivate.requestLocalFileSystem");
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_FILE_BROWSER_PRIVATE_API_H_