Remove unused CFWL_Form flags

xfa/fwl/cfwl_form.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_CFWL_FORM_H_
 #define XFA_FWL_CFWL_FORM_H_
 
 #include <memory>
 
 #include "core/fxcrt/fx_system.h"
 #include "xfa/fwl/cfwl_widget.h"
 #include "xfa/fwl/cfwl_widgetproperties.h"
 
 #define FWL_CLASS_Form L"FWL_FORM"
 #define FWL_CLASS_FormProxy L"FWL_FORMPROXY"
-#define FWL_STYLEEXT_FRM_Resize (1L << 0)
-#define FWL_STYLEEXT_FRM_NativeBorder (1L << 1)
-#define FWL_STYLEEXT_FRM_RoundCorner (2L << 1)
-#define FWL_STYLEEXT_FRM_RoundCorner4 (3L << 1)
-#define FWL_STYLEEXT_FRM_NoDrawClient (1L << 3)
-#define FWL_STYLEEXT_FRM_BorderCornerMask (3L << 1)
-#define FWL_STYLEEXT_FRM_Max (3)
 
 #if (_FX_OS_ == _FX_MACOSX_)
 #define FWL_UseMacSystemBorder
 #endif
 
 class CFWL_MessageMouse;
 class CFWL_NoteLoop;
 class CFWL_Widget;
 class IFWL_ThemeProvider;
 class CFWL_SysBtn;
@@ skipping 32 matching lines @@
   CFX_RectF GetEdgeRect();
   void SetWorkAreaRect();
   void Layout();
   void ResetSysBtn();
   void RegisterForm();
   void UnRegisterForm();
   void OnLButtonDown(CFWL_MessageMouse* pMsg);
   void OnLButtonUp(CFWL_MessageMouse* pMsg);
   void OnMouseMove(CFWL_MessageMouse* pMsg);
   void OnMouseLeave(CFWL_MessageMouse* pMsg);
-  void OnLButtonDblClk(CFWL_MessageMouse* pMsg);
 
 #if (_FX_OS_ == _FX_MACOSX_)
   bool m_bMouseIn;
 #endif
   CFX_RectF m_rtRestore;
   CFX_RectF m_rtRelative;
   CFWL_SysBtn* m_pCloseBox;
   CFWL_SysBtn* m_pMinBox;
   CFWL_SysBtn* m_pMaxBox;
   std::unique_ptr<CFWL_NoteLoop> m_pNoteLoop;
   CFWL_Widget* m_pSubFocus;
   FX_FLOAT m_fCXBorder;
   FX_FLOAT m_fCYBorder;
   int32_t m_iCaptureBtn;
   int32_t m_iSysBox;
   bool m_bLButtonDown;
   bool m_bMaximized;
   bool m_bSetMaximize;
   bool m_bDoModalFlag;
 };
 
 #endif  // XFA_FWL_CFWL_FORM_H_