Remove SetDataProvider from IFWL_Widget

xfa/fwl/core/ifwl_widget.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_IFWL_WIDGET_H_
 #define XFA_FWL_CORE_IFWL_WIDGET_H_
 
 #include <memory>
@@ skipping 78 matching lines @@
   FWL_Error UnlockUpdate();
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
   FWL_Error TransformTo(IFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
   FWL_Error TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt);
   FWL_Error GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
   FWL_Error SetMatrix(const CFX_Matrix& matrix);
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr);
   IFWL_ThemeProvider* GetThemeProvider();
   FWL_Error SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
-  FWL_Error SetDataProvider(IFWL_DataProvider* pDataProvider);
   IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
   IFWL_App* GetOwnerApp() const;
   CFX_SizeF GetOffsetFromParent(IFWL_Widget* pParent);
 
   // These call into equivalent polymorphic methods of m_pImpl. There
   // should be no need to override these in subclasses.
   FWL_Error GetClassName(CFX_WideString& wsClass) const;
   FWL_Type GetClassID() const;
   FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
   FWL_Error Initialize();
   FWL_Error Finalize();
 
   CFWL_WidgetImp* GetImpl() const { return m_pImpl.get(); }
 
  protected:
   // Takes ownership of |pImpl|.
   void SetImpl(CFWL_WidgetImp* pImpl) { m_pImpl.reset(pImpl); }
 
  private:
   std::unique_ptr<CFWL_WidgetImp> m_pImpl;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_WIDGET_H_