Cleanup cfwl_* files.

xfa/fwl/core/cfwl_pushbutton.h

Index: xfa/fwl/core/cfwl_pushbutton.h
diff --git a/xfa/fwl/core/cfwl_pushbutton.h b/xfa/fwl/core/cfwl_pushbutton.h
index b6beb14babcc1f59e3ed46bbaece334e234c6024..ad17406d12d59e33566c63485e086ca085e90e94 100644
--- a/xfa/fwl/core/cfwl_pushbutton.h
+++ b/xfa/fwl/core/cfwl_pushbutton.h
@@ -12,24 +12,13 @@
 
 class CFWL_PushButton : public CFWL_Widget, public IFWL_PushButtonDP {
  public:
-  CFWL_PushButton(const IFWL_App*);
+  explicit CFWL_PushButton(const IFWL_App*);
   ~CFWL_PushButton() override;
 
   void Initialize();
 
-  FWL_Error SetCaption(const CFX_WideStringC& wsCaption);
-  CFX_DIBitmap* GetPicture();
-  FWL_Error SetPicture(CFX_DIBitmap* pBitmap);
-
   // IFWL_DataProvider
   void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
-  // IFWL_PushButtonDP
-  CFX_DIBitmap* GetPicture(IFWL_Widget* pWidget) override;
-
- private:
-  CFX_WideString m_wsCaption;
-  CFX_DIBitmap* m_pBitmap;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_PUSHBUTTON_H_