Add FilePath to base namespace.

chrome/installer/util/lzma_util.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_INSTALLER_UTIL_LZMA_UTIL_H_
 #define CHROME_INSTALLER_UTIL_LZMA_UTIL_H_
 
 #include <windows.h>
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 
+namespace base {
 class FilePath;
+}
 
 // This is a utility class that acts as a wrapper around LZMA SDK library
 class LzmaUtil {
  public:
   // Utility method that does the job of calling OpenArchive(), UnPack()
   // and CloseArchive() in order. Returns error code (NO_ERROR if successful).
   static int32 UnPackArchive(const std::wstring& archive,
                              const std::wstring& output_dir,
                              std::wstring* output_file);
 
   LzmaUtil();
   ~LzmaUtil();
 
   DWORD OpenArchive(const std::wstring& archivePath);
 
   // Unpacks the archive to the given location
   DWORD UnPack(const std::wstring& location);
 
   // Unpacks the archive to the given location and returns the last file
   // extracted from archive. |single_file| is set to true iff only a single
   // file is extracted from archive.
   DWORD UnPack(const std::wstring& location,
                std::wstring* output_file);
 
   void CloseArchive();
 
  protected:
-  bool CreateDirectory(const FilePath& dir);
+  bool CreateDirectory(const base::FilePath& dir);
 
  private:
   HANDLE archive_handle_;
   std::set<std::wstring> directories_created_;
 
   DISALLOW_COPY_AND_ASSIGN(LzmaUtil);
 };
 
 #endif  // CHROME_INSTALLER_UTIL_LZMA_UTIL_H_