5 files changed, 10 insertions, 10 deletions
diff --git a/core/fpdfapi/page/cpdf_clippath.h b/core/fpdfapi/page/cpdf_clippath.h
index 89365a2d5a..91a25cda1a 100644
--- a/core/fpdfapi/page/cpdf_clippath.h
+++ b/core/fpdfapi/page/cpdf_clippath.h
@@ -44,13 +44,13 @@ class CPDF_ClipPath {
   void Transform(const CFX_Matrix& matrix);
 
  private:
-  class PathData {
+  class PathData : public Retainable {
    public:
     using PathAndTypeData = std::pair<CPDF_Path, uint8_t>;
 
     PathData();
     PathData(const PathData& that);
-    ~PathData();
+    ~PathData() override;
 
     std::vector<PathAndTypeData> m_PathAndTypeList;
     std::vector<std::unique_ptr<CPDF_TextObject>> m_TextList;
diff --git a/core/fpdfapi/page/cpdf_colorstate.h b/core/fpdfapi/page/cpdf_colorstate.h
index 36a2c2d260..9619051e2c 100644
--- a/core/fpdfapi/page/cpdf_colorstate.h
+++ b/core/fpdfapi/page/cpdf_colorstate.h
@@ -46,11 +46,11 @@ class CPDF_ColorState {
   bool HasRef() const { return !!m_Ref; }
 
  private:
-  class ColorData {
+  class ColorData : public Retainable {
    public:
     ColorData();
     ColorData(const ColorData& src);
-    ~ColorData();
+    ~ColorData() override;
 
     void SetDefault();
 
diff --git a/core/fpdfapi/page/cpdf_contentmark.h b/core/fpdfapi/page/cpdf_contentmark.h
index cb22737ca9..d9bc35a7fb 100644
--- a/core/fpdfapi/page/cpdf_contentmark.h
+++ b/core/fpdfapi/page/cpdf_contentmark.h
@@ -30,11 +30,11 @@ class CPDF_ContentMark {
   bool HasRef() const { return !!m_Ref; }
 
  private:
-  class MarkData {
+  class MarkData : public Retainable {
    public:
     MarkData();
     MarkData(const MarkData& src);
-    ~MarkData();
+    ~MarkData() override;
 
     size_t CountItems() const;
     const CPDF_ContentMarkItem& GetItem(size_t index) const;
diff --git a/core/fpdfapi/page/cpdf_generalstate.h b/core/fpdfapi/page/cpdf_generalstate.h
index 5abb87ea26..5d6d5dc552 100644
--- a/core/fpdfapi/page/cpdf_generalstate.h
+++ b/core/fpdfapi/page/cpdf_generalstate.h
@@ -77,11 +77,11 @@ class CPDF_GeneralState {
   CFX_Matrix* GetMutableMatrix();
 
  private:
-  class StateData {
+  class StateData : public Retainable {
    public:
     StateData();
     StateData(const StateData& that);
-    ~StateData();
+    ~StateData() override;
 
     ByteString m_BlendMode;
     int m_BlendType;
diff --git a/core/fpdfapi/page/cpdf_textstate.h b/core/fpdfapi/page/cpdf_textstate.h
index 2a48702318..aa128072b6 100644
--- a/core/fpdfapi/page/cpdf_textstate.h
+++ b/core/fpdfapi/page/cpdf_textstate.h
@@ -59,11 +59,11 @@ class CPDF_TextState {
   float* GetMutableCTM();
 
  private:
-  class TextData {
+  class TextData : public Retainable {
    public:
     TextData();
     TextData(const TextData& src);
-    ~TextData();
+    ~TextData() override;
 
     void SetFont(CPDF_Font* pFont);
     float GetFontSizeV() const;