3 files changed, 3 insertions, 6 deletions
diff --git a/core/fxge/dib/cfx_dibitmap.h b/core/fxge/dib/cfx_dibitmap.h
index 105a22d76e..008a549bac 100644
--- a/core/fxge/dib/cfx_dibitmap.h
+++ b/core/fxge/dib/cfx_dibitmap.h
@@ -18,8 +18,6 @@ class CFX_DIBitmap : public CFX_DIBSource {
   template <typename T, typename... Args>
   friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
 
-  ~CFX_DIBitmap() override;
-
   bool Create(int width,
               int height,
               FXDIB_Format format,
@@ -111,6 +109,7 @@ class CFX_DIBitmap : public CFX_DIBSource {
  protected:
   CFX_DIBitmap();
   CFX_DIBitmap(const CFX_DIBitmap& src);
+  ~CFX_DIBitmap() override;
 
 #if defined _SKIA_SUPPORT_PATHS_
   enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied };
diff --git a/core/fxge/dib/cfx_filtereddib.h b/core/fxge/dib/cfx_filtereddib.h
index e998c7169a..9c1efa544d 100644
--- a/core/fxge/dib/cfx_filtereddib.h
+++ b/core/fxge/dib/cfx_filtereddib.h
@@ -17,8 +17,6 @@ class CFX_FilteredDIB : public CFX_DIBSource {
   template <typename T, typename... Args>
   friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
 
-  ~CFX_FilteredDIB() override;
-
   virtual FXDIB_Format GetDestFormat() = 0;
   virtual uint32_t* GetDestPalette() = 0;
   virtual void TranslateScanline(const uint8_t* src_buf,
@@ -32,6 +30,7 @@ class CFX_FilteredDIB : public CFX_DIBSource {
 
  protected:
   CFX_FilteredDIB();
+  ~CFX_FilteredDIB() override;
 
   // CFX_DIBSource
   const uint8_t* GetScanline(int line) const override;
diff --git a/core/fxge/win32/cfx_windowsdib.h b/core/fxge/win32/cfx_windowsdib.h
index 7c2447ded2..3120b8f543 100644
--- a/core/fxge/win32/cfx_windowsdib.h
+++ b/core/fxge/win32/cfx_windowsdib.h
@@ -32,8 +32,6 @@ class CFX_WindowsDIB : public CFX_DIBitmap {
   template <typename T, typename... Args>
   friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
 
-  ~CFX_WindowsDIB() override;
-
   static ByteString GetBitmapInfo(const RetainPtr<CFX_DIBitmap>& pBitmap);
   static HBITMAP GetDDBitmap(const RetainPtr<CFX_DIBitmap>& pBitmap, HDC hDC);
 
@@ -49,6 +47,7 @@ class CFX_WindowsDIB : public CFX_DIBitmap {
 
  protected:
   CFX_WindowsDIB(HDC hDC, int width, int height);
+  ~CFX_WindowsDIB() override;
 
   HDC m_hMemDC;
   HBITMAP m_hBitmap;