Remove FX_BOOL from xfa.

xfa/fxfa/app/xfa_ffpushbutton.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_FXFA_APP_XFA_FFPUSHBUTTON_H_
 #define XFA_FXFA_APP_XFA_FFPUSHBUTTON_H_
 
 #include "xfa/fxfa/app/xfa_fffield.h"
 
 #define XFA_FWL_PSBSTYLEEXT_HiliteNone (0L << 0)
 #define XFA_FWL_PSBSTYLEEXT_HiliteInverted (1L << 0)
 #define XFA_FWL_PSBSTYLEEXT_HilitePush (2L << 0)
 #define XFA_FWL_PSBSTYLEEXT_HiliteOutLine (4L << 0)
 
 class CXFA_TextProvider;
 
 class CXFA_FFPushButton : public CXFA_FFField {
  public:
   CXFA_FFPushButton(CXFA_FFPageView* pPageView, CXFA_WidgetAcc* pDataAcc);
   ~CXFA_FFPushButton() override;
 
   // CXFA_FFField
   void RenderWidget(CFX_Graphics* pGS,
                     CFX_Matrix* pMatrix,
                     uint32_t dwStatus) override;
-  FX_BOOL LoadWidget() override;
+  bool LoadWidget() override;
   void UnloadWidget() override;
-  FX_BOOL PerformLayout() override;
+  bool PerformLayout() override;
   void UpdateWidgetProperty() override;
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnProcessEvent(CFWL_Event* pEvent) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
   void LoadHighlightCaption();
   void LayoutHighlightCaption();
   void RenderHighlightCaption(CFX_Graphics* pGS, CFX_Matrix* pMatrix = nullptr);
   FX_FLOAT GetLineWidth();
   FX_ARGB GetLineColor();
   FX_ARGB GetFillColor();
 
   CXFA_TextLayout* m_pRolloverTextLayout;
   CXFA_TextLayout* m_pDownTextLayout;
   CXFA_TextProvider* m_pDownProvider;
   CXFA_TextProvider* m_pRollProvider;
   IFWL_WidgetDelegate* m_pOldDelegate;
 };
 
 #endif  // XFA_FXFA_APP_XFA_FFPUSHBUTTON_H_