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

chrome/service/cloud_print/cloud_print_url_fetcher_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_proxy.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/values.h"
@@ skipping 33 matching lines @@
  public:
   explicit TestCloudPrintURLFetcher(
       base::MessageLoopProxy* io_message_loop_proxy)
           : io_message_loop_proxy_(io_message_loop_proxy) {
   }
 
   virtual net::URLRequestContextGetter* GetRequestContextGetter() {
     return new TrackingTestURLRequestContextGetter(
         io_message_loop_proxy_.get());
   }
+
  private:
+  virtual ~TestCloudPrintURLFetcher() {}
+
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 };
 
 class CloudPrintURLFetcherTest : public testing::Test,
                                  public CloudPrintURLFetcherDelegate {
  public:
   CloudPrintURLFetcherTest() : max_retries_(0), fetcher_(NULL) { }
 
   // Creates a URLFetcher, using the program's main thread to do IO.
   virtual void CreateFetcher(const GURL& url, int max_retries);
@@ skipping 291 matching lines @@
   manager->OverrideEntryForTests(url, entry);
 
   CreateFetcher(url, 11);
 
   MessageLoop::current()->Run();
 
   net::URLRequestThrottlerManager::GetInstance()->EraseEntryForTests(url);
 }
 
 }  // namespace.