Continue IFWL widget cleanup.

xfa/fwl/core/cfwl_combobox.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_COMBOBOX_H_
 #define XFA_FWL_CORE_CFWL_COMBOBOX_H_
 
 #include <memory>
@@ skipping 45 matching lines @@
   bool EditCopy(CFX_WideString& wsCopy);
   bool EditCut(CFX_WideString& wsCut);
   bool EditPaste(const CFX_WideString& wsPaste);
   bool EditSelectAll();
   bool EditDelete();
   bool EditDeSelect();
   FWL_Error GetBBox(CFX_RectF& rect);
   void EditModifyStylesEx(uint32_t dwStylesExAdded, uint32_t dwStylesExRemoved);
 
   // IFWL_DataProvider
-  FWL_Error GetCaption(IFWL_Widget* pWidget,
-                       CFX_WideString& wsCaption) override;
+  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
 
   // IFWL_ListBoxDP
   int32_t CountItems(const IFWL_Widget* pWidget) override;
   CFWL_ListItem* GetItem(const IFWL_Widget* pWidget, int32_t nIndex) override;
   int32_t GetItemIndex(IFWL_Widget* pWidget, CFWL_ListItem* pItem) override;
   bool SetItemIndex(IFWL_Widget* pWidget,
                     CFWL_ListItem* pItem,
                     int32_t nIndex) override;
 
   uint32_t GetItemStyles(IFWL_Widget* pWidget, CFWL_ListItem* pItem) override;
@@ skipping 31 matching lines @@
   // IFWL_ComboBoxDP
   FX_FLOAT GetListHeight(IFWL_Widget* pWidget) override;
 
  private:
   std::vector<std::unique_ptr<CFWL_ListItem>> m_ItemArray;
   FX_FLOAT m_fMaxListHeight;
   FX_FLOAT m_fItemHeight;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_COMBOBOX_H_