IFWL cleanup in the Combo classes

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 93 matching lines @@
     if (IsLocked())
       m_iLock--;
   }
 
   void TransformTo(IFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
   void GetMatrix(CFX_Matrix& matrix, bool bGlobal = false);
   IFWL_ThemeProvider* GetThemeProvider() const {
     return m_pProperties->m_pThemeProvider;
   }
 
+  IFWL_DataProvider* GetDataProvider() const {
+    return m_pProperties->m_pDataProvider;
+  }
+
   void SetDelegate(IFWL_WidgetDelegate* delegate) { m_pDelegate = delegate; }
   IFWL_WidgetDelegate* GetDelegate() {
     return m_pDelegate ? m_pDelegate : this;
   }
   const IFWL_WidgetDelegate* GetDelegate() const {
     return m_pDelegate ? m_pDelegate : this;
   }
 
   const IFWL_App* GetOwnerApp() const { return m_pOwnerApp; }
   uint32_t GetEventKey() const { return m_nEventKey; }
@@ skipping 108 matching lines @@
   void NotifyDriver();
   bool IsParent(IFWL_Widget* pParent);
 
   void* m_pLayoutItem;
   CFWL_Widget* m_pAssociate;
   uint32_t m_nEventKey;
   IFWL_WidgetDelegate* m_pDelegate;  // Not owned.
 };
 
 #endif  // XFA_FWL_CORE_IFWL_WIDGET_H_