Continue IFWL widget cleanup.

xfa/fwl/core/cfwl_picturebox.h

 // Copyright 2014 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_FWL_CORE_CFWL_PICTUREBOX_H_
 #define XFA_FWL_CORE_CFWL_PICTUREBOX_H_
 
 #include "xfa/fwl/core/cfwl_widget.h"
@@ skipping 14 matching lines @@
   int32_t GetFlipMode();
   FWL_Error SetFlipMode(int32_t iFlipMode);
   int32_t GetOpacity();
   FWL_Error SetOpacity(int32_t iOpacity);
   FWL_Error GetScale(FX_FLOAT& fScaleX, FX_FLOAT& fScaleY);
   FWL_Error SetScale(FX_FLOAT fScaleX, FX_FLOAT fScaleY);
   FWL_Error GetOffset(FX_FLOAT& fx, FX_FLOAT& fy);
   FWL_Error SetOffset(FX_FLOAT fx, FX_FLOAT fy);
 
   // IFWL_DataProvider
-  FWL_Error GetCaption(IFWL_Widget* pWidget,
-                       CFX_WideString& wsCaption) override;
+  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
 
   // IFWL_PictureBoxDP
   CFX_DIBitmap* GetPicture(IFWL_Widget* pWidget) override;
   CFX_DIBitmap* GetErrorPicture(IFWL_Widget* pWidget) override;
   CFX_DIBitmap* GetInitialPicture(IFWL_Widget* pWidget) override;
   int32_t GetOpacity(IFWL_Widget* pWidget) override;
   int32_t GetFlipMode(IFWL_Widget* pWidget) override;
   FWL_Error GetMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) override;
 
  private:
   CFX_DIBitmap* m_pBitmap;
   int32_t m_iOpacity;
   int32_t m_iFlipMode;
   FX_FLOAT m_fRotation;
   FX_FLOAT m_fScaleX;
   FX_FLOAT m_fScaleY;
   FX_FLOAT m_fOffSetX;
   FX_FLOAT m_fOffSetY;
   CFX_WideString m_wsData;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_PICTUREBOX_H_