3 files changed, 3 insertions, 3 deletions
diff --git a/xfa/fgas/font/cfgas_fontmgr.h b/xfa/fgas/font/cfgas_fontmgr.h
index 72578be744..6dda338a83 100644
--- a/xfa/fgas/font/cfgas_fontmgr.h
+++ b/xfa/fgas/font/cfgas_fontmgr.h
@@ -121,7 +121,7 @@ class CFX_FontSourceEnum_File {
 
 #endif  // _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
 
-class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
+class CFGAS_FontMgr final : public Observable<CFGAS_FontMgr> {
  public:
   CFGAS_FontMgr();
   ~CFGAS_FontMgr();
diff --git a/xfa/fgas/font/cfgas_gefont.h b/xfa/fgas/font/cfgas_gefont.h
index bc24cebe47..685fa68200 100644
--- a/xfa/fgas/font/cfgas_gefont.h
+++ b/xfa/fgas/font/cfgas_gefont.h
@@ -20,7 +20,7 @@
 
 class CFX_UnicodeEncoding;
 
-class CFGAS_GEFont : public Retainable {
+class CFGAS_GEFont final : public Retainable {
  public:
   template <typename T, typename... Args>
   friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
diff --git a/xfa/fgas/font/cfgas_pdffontmgr.h b/xfa/fgas/font/cfgas_pdffontmgr.h
index 235f883ce7..6c4242288a 100644
--- a/xfa/fgas/font/cfgas_pdffontmgr.h
+++ b/xfa/fgas/font/cfgas_pdffontmgr.h
@@ -19,7 +19,7 @@ class CFGAS_FontMgr;
 class CFGAS_GEFont;
 class CPDF_Document;
 
-class CFGAS_PDFFontMgr : public Observable<CFGAS_PDFFontMgr> {
+class CFGAS_PDFFontMgr final : public Observable<CFGAS_PDFFontMgr> {
  public:
   explicit CFGAS_PDFFontMgr(CPDF_Document* pDoc, CFGAS_FontMgr* pFontMgr);
   ~CFGAS_PDFFontMgr();