Remove FX_BOOL from fpdfsdk.

fpdfsdk/formfiller/cffl_checkbox.h

Index: fpdfsdk/formfiller/cffl_checkbox.h
diff --git a/fpdfsdk/formfiller/cffl_checkbox.h b/fpdfsdk/formfiller/cffl_checkbox.h
index 0c62d5741bb7b2d1377e4de5293dee279c2421a9..65dba29f2e04296942f807c253bc4df9a6170706 100644
--- a/fpdfsdk/formfiller/cffl_checkbox.h
+++ b/fpdfsdk/formfiller/cffl_checkbox.h
@@ -17,17 +17,15 @@ class CFFL_CheckBox : public CFFL_Button {
   // CFFL_Button
   CPWL_Wnd* NewPDFWindow(const PWL_CREATEPARAM& cp,
                          CPDFSDK_PageView* pPageView) override;
-  FX_BOOL OnKeyDown(CPDFSDK_Annot* pAnnot,
-                    uint32_t nKeyCode,
-                    uint32_t nFlags) override;
-  FX_BOOL OnChar(CPDFSDK_Annot* pAnnot,
-                 uint32_t nChar,
+  bool OnKeyDown(CPDFSDK_Annot* pAnnot,
+                 uint32_t nKeyCode,
                  uint32_t nFlags) override;
-  FX_BOOL OnLButtonUp(CPDFSDK_PageView* pPageView,
-                      CPDFSDK_Annot* pAnnot,
-                      uint32_t nFlags,
-                      const CFX_FloatPoint& point) override;
-  FX_BOOL IsDataChanged(CPDFSDK_PageView* pPageView) override;
+  bool OnChar(CPDFSDK_Annot* pAnnot, uint32_t nChar, uint32_t nFlags) override;
+  bool OnLButtonUp(CPDFSDK_PageView* pPageView,
+                   CPDFSDK_Annot* pAnnot,
+                   uint32_t nFlags,
+                   const CFX_FloatPoint& point) override;
+  bool IsDataChanged(CPDFSDK_PageView* pPageView) override;
   void SaveData(CPDFSDK_PageView* pPageView) override;
 };