RefCounted types should not have public destructors, delegate cleanup

chrome/service/cloud_print/cloud_print_url_fetcher.h

Index: chrome/service/cloud_print/cloud_print_url_fetcher.h
diff --git a/chrome/service/cloud_print/cloud_print_url_fetcher.h b/chrome/service/cloud_print/cloud_print_url_fetcher.h
index 654b4e78b5d80272d5952efdc66805f2b0f474ad..253b8734e54e74bff7a456dce705b5a0a795375c 100644
--- a/chrome/service/cloud_print/cloud_print_url_fetcher.h
+++ b/chrome/service/cloud_print/cloud_print_url_fetcher.h
@@ -41,7 +41,6 @@ class CloudPrintURLFetcher
 
   class Delegate {
    public:
-    virtual ~Delegate() { }
     // Override this to handle the raw response as it is available. No response
     // error checking is done before this method is called. If the delegate
     // returns CONTINUE_PROCESSING, we will then check for network
@@ -90,6 +89,9 @@ class CloudPrintURLFetcher
     // Authentication information may change between retries.
     // CloudPrintURLFetcher will request auth info before sending any request.
     virtual std::string GetAuthHeader() = 0;
+
+   protected:
+    virtual ~Delegate() {}
   };
   CloudPrintURLFetcher();