Second patch in making destructors of refcounted objects private.

net/url_request/url_request_unittest.cc

Index: net/url_request/url_request_unittest.cc
===================================================================
--- net/url_request/url_request_unittest.cc	(revision 31079)
+++ net/url_request/url_request_unittest.cc	(working copy)
@@ -66,6 +66,7 @@
     accept_charset_ = "iso-8859-1,*,utf-8";
   }
 
+ private:
   virtual ~URLRequestTestContext() {
     delete ftp_transaction_factory_;
     delete http_transaction_factory_;
@@ -1433,6 +1434,8 @@
   virtual void StartAsync() {
     this->NotifyRestartRequired();
   }
+ private:
+   ~RestartTestJob() {}
 };
 
 class CancelTestJob : public URLRequestTestJob {
@@ -1443,6 +1446,8 @@
   virtual void StartAsync() {
     request_->Cancel();
   }
+ private:
+  ~CancelTestJob() {}
 };
 
 class CancelThenRestartTestJob : public URLRequestTestJob {
@@ -1455,6 +1460,8 @@
     request_->Cancel();
     this->NotifyRestartRequired();
   }
+ private:
+  ~CancelThenRestartTestJob() {}
 };
 
 // An Interceptor for use with interceptor tests