Kill dead IFWL_*::Initialize() variants dead.

xfa/include/fwl/core/fwl_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 _FWL_WIDGET_H
 #define _FWL_WIDGET_H
 class IFWL_Target;
 class IFWL_ThemeProvider;
@@ skipping 75 matching lines @@
   FX_DWORD m_dwStyleExes;
   FX_DWORD m_dwStates;
   IFWL_ThemeProvider* m_pThemeProvider;
   IFWL_DataProvider* m_pDataProvider;
   IFWL_Widget* m_pParent;
   IFWL_Widget* m_pOwner;
 };
 class IFWL_Custom : public IFWL_Widget {
  public:
   static IFWL_Custom* Create();
-
-  FWL_ERR Initialize(IFWL_Widget* pOuter = NULL);
   FWL_ERR Initialize(const CFWL_WidgetImpProperties& properties,
-                     IFWL_Widget* pOuter = NULL);
+                     IFWL_Widget* pOuter);
   FWL_ERR SetProxy(IFWL_Proxy* pProxy);
 
  protected:
   IFWL_Custom();
 };
 class IFWL_Proxy {
  public:
   virtual ~IFWL_Proxy() {}
   virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) = 0;
   virtual FWL_ERR Update() = 0;
 };
 #define FWL_ACCEL_Control (1L << 0)
 #define FWL_ACCEL_Alt (1L << 1)
 #define FWL_ACCEL_Shift (1L << 2)
 #define FWL_ACCEL_VirtKey (1L << 3)
 typedef struct _FWL_ACCEL {
   FX_DWORD dwKey;
   FX_DWORD dwCmd;
 } FWL_ACCEL;
 typedef CFX_MapPtrTemplate<FX_DWORD, FX_DWORD> CFX_MapAccelerators;
 FWL_ERR FWL_Accelerator_SetApp(CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_Accelerator_SetThread(CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_Accelerator_SetForm(IFWL_Form* pFrom,
                                 CFX_MapAccelerators* pMapAccel);
 FWL_ERR FWL_EnabelWidget(IFWL_Widget* widget, FX_BOOL bEnable);
 #endif