| // Copyright 2017 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. | 
 |  | 
 | // Forward declaration of StringPiece types from base/strings/string_piece.h | 
 |  | 
 | #ifndef BASE_STRINGS_STRING_PIECE_FORWARD_H_ | 
 | #define BASE_STRINGS_STRING_PIECE_FORWARD_H_ | 
 |  | 
 | #include <string> | 
 |  | 
 | #include "base/strings/string16.h" | 
 |  | 
 | namespace base { | 
 |  | 
 | template <typename STRING_TYPE> | 
 | class BasicStringPiece; | 
 | typedef BasicStringPiece<std::string> StringPiece; | 
 | typedef BasicStringPiece<string16> StringPiece16; | 
 | typedef BasicStringPiece<std::wstring> WStringPiece; | 
 |  | 
 | }  // namespace base | 
 |  | 
 | #endif  // BASE_STRINGS_STRING_PIECE_FORWARD_H_ |