4 files changed, 5 insertions, 5 deletions
diff --git a/fpdfsdk/ipdfsdk_annothandler.h b/fpdfsdk/ipdfsdk_annothandler.h
index 1476089253..11c43ecf0b 100644
--- a/fpdfsdk/ipdfsdk_annothandler.h
+++ b/fpdfsdk/ipdfsdk_annothandler.h
@@ -21,7 +21,7 @@ class CXFA_FFWidget;
 
 class IPDFSDK_AnnotHandler {
  public:
-  virtual ~IPDFSDK_AnnotHandler() {}
+  virtual ~IPDFSDK_AnnotHandler() = default;
 
   virtual bool CanAnswer(CPDFSDK_Annot* pAnnot) = 0;
   virtual CPDFSDK_Annot* NewAnnot(CPDF_Annot* pAnnot,
diff --git a/fpdfsdk/pwl/cpwl_edit.h b/fpdfsdk/pwl/cpwl_edit.h
index 849436a3e3..d890834aac 100644
--- a/fpdfsdk/pwl/cpwl_edit.h
+++ b/fpdfsdk/pwl/cpwl_edit.h
@@ -15,7 +15,7 @@
 
 class IPWL_Filler_Notify {
  public:
-  virtual ~IPWL_Filler_Notify() {}
+  virtual ~IPWL_Filler_Notify() = default;
 
   // Must write to |bBottom| and |fPopupRet|.
   virtual void QueryWherePopup(CPWL_Wnd::PrivateData* pAttached,
diff --git a/fpdfsdk/pwl/cpwl_edit_impl.h b/fpdfsdk/pwl/cpwl_edit_impl.h
index 7f14ade66a..047286322f 100644
--- a/fpdfsdk/pwl/cpwl_edit_impl.h
+++ b/fpdfsdk/pwl/cpwl_edit_impl.h
@@ -96,7 +96,7 @@ class CPWL_EditImpl_Undo {
 
 class IFX_Edit_UndoItem {
  public:
-  virtual ~IFX_Edit_UndoItem() {}
+  virtual ~IFX_Edit_UndoItem() = default;
 
   virtual void Undo() = 0;
   virtual void Redo() = 0;
diff --git a/fpdfsdk/pwl/cpwl_wnd.h b/fpdfsdk/pwl/cpwl_wnd.h
index 1ed239ed85..cc6662be30 100644
--- a/fpdfsdk/pwl/cpwl_wnd.h
+++ b/fpdfsdk/pwl/cpwl_wnd.h
@@ -106,7 +106,7 @@ class CPWL_Wnd : public CPWL_TimerHandler, public Observable<CPWL_Wnd> {
 
   class ProviderIface : public Observable<ProviderIface> {
    public:
-    virtual ~ProviderIface() {}
+    virtual ~ProviderIface() = default;
 
     // get a matrix which map user space to CWnd client space
     virtual CFX_Matrix GetWindowMatrix(PrivateData* pAttached) = 0;
@@ -114,7 +114,7 @@ class CPWL_Wnd : public CPWL_TimerHandler, public Observable<CPWL_Wnd> {
 
   class FocusHandlerIface {
    public:
-    virtual ~FocusHandlerIface() {}
+    virtual ~FocusHandlerIface() = default;
     virtual void OnSetFocus(CPWL_Edit* pEdit) = 0;
   };