RefCounted types should not have public destructors, ipc/ edition

ipc/ipc_sync_channel_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.
 //
 // Unit test for SyncChannel.
 
 #include "ipc/ipc_sync_channel.h"
 
 #include <string>
 #include <vector>
@@ skipping 1092 matching lines @@
 
   void SendMessageOnHelperThread() {
     int answer = 0;
     bool result = Send(new SyncChannelTestMsg_AnswerToLife(&answer));
     DCHECK(result);
     DCHECK_EQ(answer, 42);
 
     worker_->Done();
   }
 
+ private:
+  virtual ~TestSyncMessageFilter() {}
+
   Worker* worker_;
   base::Thread thread_;
 };
 
 class SyncMessageFilterServer : public Worker {
  public:
   SyncMessageFilterServer()
       : Worker(Channel::MODE_SERVER, "sync_message_filter_server") {
     filter_ = new TestSyncMessageFilter(shutdown_event(), this);
   }
@@ skipping 826 matching lines @@
 
 }  // namespace
 
 // Windows needs to send an out-of-band secret to verify the client end of the
 // channel. Test that we still connect correctly in that case.
 TEST_F(IPCSyncChannelTest, Verified) {
   Verified();
 }
 
 }  // namespace IPC