Cleanup unused methods and return values in FWL code.

xfa/fwl/lightwidget/cfwl_widget.h

Index: xfa/fwl/lightwidget/cfwl_widget.h
diff --git a/xfa/fwl/lightwidget/cfwl_widget.h b/xfa/fwl/lightwidget/cfwl_widget.h
index c230ce200c90653a098689c1e801b7dca7798eaf..16b1141aae55d7732084764103cab81a8263178a 100644
--- a/xfa/fwl/lightwidget/cfwl_widget.h
+++ b/xfa/fwl/lightwidget/cfwl_widget.h
@@ -21,59 +21,37 @@ class CFWL_WidgetMgr;
 
 class CFWL_Widget {
  public:
+  CFWL_Widget();
   virtual ~CFWL_Widget();
 
   virtual IFWL_Widget* GetWidget();
   virtual const IFWL_Widget* GetWidget() const;
 
-  FWL_Error GetClassName(CFX_WideString& wsClass) const;
-  FWL_Type GetClassID() const;
-  virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
-
   FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
-  FWL_Error GetGlobalRect(CFX_RectF& rect);
   FWL_Error SetWidgetRect(const CFX_RectF& rect);
+  FWL_Error GetGlobalRect(CFX_RectF& rect);
   FWL_Error GetClientRect(CFX_RectF& rtClient);
-  CFWL_Widget* GetParent();
-  FWL_Error SetParent(CFWL_Widget* pParent);
-  CFWL_Widget* GetOwner();
-  FWL_Error SetOwner(CFWL_Widget* pOwner);
-  uint32_t GetStyles();
+
   FWL_Error ModifyStyles(uint32_t dwStylesAdded, uint32_t dwStylesRemoved);
   uint32_t GetStylesEx();
   FWL_Error ModifyStylesEx(uint32_t dwStylesExAdded,
                            uint32_t dwStylesExRemoved);
+
   uint32_t GetStates();
   void SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE);
-  void* GetLayoutItem() const;
+
   void SetLayoutItem(void* pItem);
 
-  FWL_Error SetPrivateData(void* module_id,
-                           void* pData,
-                           PD_CALLBACK_FREEDATA callback);
-  void* GetPrivateData(void* module_id);
-  FWL_Error Update();
-  FWL_Error LockUpdate();
-  FWL_Error UnlockUpdate();
+  void Update();
+  void LockUpdate();
+  void UnlockUpdate();
+
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
-  FWL_Error TransformTo(CFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
-  FWL_Error TransformTo(CFWL_Widget* pWidget, CFX_RectF& rt);
-  FWL_Error GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
-  FWL_Error SetMatrix(const CFX_Matrix& matrix);
+
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr);
-  IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
-  FWL_Error Repaint(const CFX_RectF* pRect = nullptr);
-  FWL_Error SetFocus(FX_BOOL bFocus);
-  FWL_Error SetGrab(FX_BOOL bSet);
-  CFWL_Widget();
 
-  void RegisterEventTarget(CFWL_Widget* pEventSource = nullptr,
-                           uint32_t dwFilter = FWL_EVENT_ALL_MASK);
-  void DispatchEvent(CFWL_Event* pEvent);
-  CFX_SizeF CalcTextSize(const CFX_WideString& wsText,
-                         FX_BOOL bMultiLine = FALSE,
-                         int32_t iLineWidth = -1);
+  IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
 
  protected:
   FWL_Error Initialize(const CFWL_WidgetProperties* pProperties = nullptr);