RefCounted types should not have public destructors, chrome/browser/extensions

chrome/browser/extensions/api/api_function.h

Index: chrome/browser/extensions/api/api_function.h
diff --git a/chrome/browser/extensions/api/api_function.h b/chrome/browser/extensions/api/api_function.h
index ef14405e8c4c3d73d9f10ad86c9e1c6fe30953b7..416035fbf238a79a63920ec11437991608e81a6b 100644
--- a/chrome/browser/extensions/api/api_function.h
+++ b/chrome/browser/extensions/api/api_function.h
@@ -20,6 +20,8 @@ class APIResourceEventNotifier;
 // need to do essentially all their work on the IO thread.
 class AsyncIOAPIFunction : public AsyncExtensionFunction {
  protected:
+  virtual ~AsyncIOAPIFunction() {}
+
   // Set up for work (e.g., validate arguments). Guaranteed to happen on UI
   // thread.
   virtual bool Prepare() = 0;
@@ -40,6 +42,7 @@ class AsyncIOAPIFunction : public AsyncExtensionFunction {
   // Access to the controller singleton.
   APIResourceController* controller();
 
+  // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 
  private: