Remove stray platform_file.h from webkit

webkit/browser/fileapi/file_system_url.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 WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_URL_H_
 #define WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_URL_H_
 
 #include <set>
 #include <string>
 
-#include "base/platform_file.h"
+#include "base/files/file_path.h"
 #include "url/gurl.h"
 #include "webkit/browser/webkit_storage_browser_export.h"
 #include "webkit/common/fileapi/file_system_mount_option.h"
 #include "webkit/common/fileapi/file_system_types.h"
 
 namespace fileapi {
 
 // A class representing a filesystem URL which consists of origin URL,
 // type and an internal path used inside the filesystem.
 //
@@ skipping 149 matching lines @@
   base::FilePath path_;
   std::string filesystem_id_;
   FileSystemMountOption mount_option_;
 };
 
 typedef std::set<FileSystemURL, FileSystemURL::Comparator> FileSystemURLSet;
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_URL_H_