RefCounted types should not have public destructors, chrome/ remaining parts

chrome/common/json_pref_store.h

Index: chrome/common/json_pref_store.h
diff --git a/chrome/common/json_pref_store.h b/chrome/common/json_pref_store.h
index e9027510b59a431ec922a32bf4bb9cebc6e6f639..75af9eb0e2767de379fae8c042a571d897584668 100644
--- a/chrome/common/json_pref_store.h
+++ b/chrome/common/json_pref_store.h
@@ -32,7 +32,6 @@ class JsonPrefStore : public PersistentPrefStore,
   // file I/O can be done.
   JsonPrefStore(const FilePath& pref_filename,
                 base::MessageLoopProxy* file_message_loop_proxy);
-  virtual ~JsonPrefStore();
 
   // PrefStore overrides:
   virtual ReadResult GetValue(const std::string& key,
@@ -63,6 +62,8 @@ class JsonPrefStore : public PersistentPrefStore,
   void OnFileRead(base::Value* value_owned, PrefReadError error, bool no_dir);
 
  private:
+  virtual ~JsonPrefStore();
+
   // ImportantFileWriter::DataSerializer overrides:
   virtual bool SerializeData(std::string* output) OVERRIDE;