Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/cbc_code128.h

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FXBARCODE_CBC_CODE128_H_
 #define XFA_FXBARCODE_CBC_CODE128_H_
 
 #include "core/fxcrt/include/fx_coordinates.h"
@@ skipping 12 matching lines @@
                  int32_t& e) override;
   CFX_WideString Decode(uint8_t* buf,
                         int32_t width,
                         int32_t height,
                         int32_t& e) override;
   CFX_WideString Decode(CFX_DIBitmap* pBitmap, int32_t& e) override;
   FX_BOOL RenderDevice(CFX_RenderDevice* device,
                        const CFX_Matrix* matrix,
                        int32_t& e) override;
   FX_BOOL RenderBitmap(CFX_DIBitmap*& pOutBitmap, int32_t& e) override;
-  BC_TYPE GetType() override { return BC_CODE128; }
+  BC_TYPE GetType() override;
 
   FX_BOOL SetTextLocation(BC_TEXT_LOC loction);
 
  private:
   CFX_WideString m_renderContents;
 };
 
 #endif  // XFA_FXBARCODE_CBC_CODE128_H_