RefCounted types should not have public destructors, base/ edition

base/threading/non_thread_safe_impl.h

Index: base/threading/non_thread_safe_impl.h
diff --git a/base/threading/non_thread_safe_impl.h b/base/threading/non_thread_safe_impl.h
index 4a70e34f786b7efbe897b3049ccbcceaf8d537a5..3d0e215cc221d9069c27202b76265accf2063956 100644
--- a/base/threading/non_thread_safe_impl.h
+++ b/base/threading/non_thread_safe_impl.h
@@ -19,11 +19,11 @@ namespace base {
 // the right version of the class for your build configuration.
 class BASE_EXPORT NonThreadSafeImpl {
  public:
-  ~NonThreadSafeImpl();
-
   bool CalledOnValidThread() const;
 
  protected:
+  ~NonThreadSafeImpl();
+
   // Changes the thread that is checked for in CalledOnValidThread. The next
   // call to CalledOnValidThread will attach this class to a new thread. It is
   // up to the NonThreadSafe derived class to decide to expose this or not.