Continue IFWL widget cleanup.

xfa/fwl/core/cfwl_picturebox.cpp

 // 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
 
 #include "xfa/fwl/core/cfwl_picturebox.h"
 
 #include <memory>
 
@@ skipping 77 matching lines @@
   fy = matrix.f;
   return FWL_Error::Succeeded;
 }
 
 FWL_Error CFWL_PictureBox::SetOffset(FX_FLOAT fx, FX_FLOAT fy) {
   m_fOffSetX = fx;
   m_fOffSetY = fy;
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_PictureBox::GetCaption(IFWL_Widget* pWidget,
-                                      CFX_WideString& wsCaption) {
-  return FWL_Error::Succeeded;
-}
+void CFWL_PictureBox::GetCaption(IFWL_Widget* pWidget,
+                                 CFX_WideString& wsCaption) {}
 
 CFX_DIBitmap* CFWL_PictureBox::GetPicture(IFWL_Widget* pWidget) {
   return m_pBitmap;
 }
 
 CFX_DIBitmap* CFWL_PictureBox::GetErrorPicture(IFWL_Widget* pWidget) {
   return m_pBitmap;
 }
 
 CFX_DIBitmap* CFWL_PictureBox::GetInitialPicture(IFWL_Widget* pWidget) {
@@ skipping 14 matching lines @@
   matrix.Rotate(m_fRotation);
   matrix.Translate(fLen, fWid);
   matrix.Scale(m_fScaleX, m_fScaleY);
   matrix.Translate(m_fOffSetX, m_fOffSetY);
   return FWL_Error::Succeeded;
 }
 
 int32_t CFWL_PictureBox::GetFlipMode(IFWL_Widget* pWidget) {
   return m_iFlipMode;
 }