Cleanup default FWL params part I

xfa/fwl/core/cfwl_form.h

Index: xfa/fwl/core/cfwl_form.h
diff --git a/xfa/fwl/core/cfwl_form.h b/xfa/fwl/core/cfwl_form.h
index db09c66bb87b46af145aa2a68a29cf6aaba4dee2..fc7c47be3b693a03ff691f4971e9451fd247d7f8 100644
--- a/xfa/fwl/core/cfwl_form.h
+++ b/xfa/fwl/core/cfwl_form.h
@@ -43,12 +43,11 @@ class CFWL_Form : public CFWL_Widget {
   // CFWL_Widget
   FWL_Type GetClassID() const override;
   bool IsInstance(const CFX_WideStringC& wsClass) const override;
-  void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
+  void GetWidgetRect(CFX_RectF& rect, bool bAutoSize) override;
   void GetClientRect(CFX_RectF& rect) override;
   void Update() override;
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
-  void DrawWidget(CFX_Graphics* pGraphics,
-                  const CFX_Matrix* pMatrix = nullptr) override;
+  void DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) override;
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix) override;