Objects that derive from RefCounted should not have public dtors

content/browser/browser_thread_impl.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 "content/browser/browser_thread_impl.h"
 
 #include <string>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
@@ skipping 196 matching lines @@
       const base::Closure& task,
       base::TimeDelta delay) OVERRIDE {
     return BrowserThread::PostNonNestableDelayedTask(id_, from_here, task,
                                                      delay);
   }
 
   virtual bool RunsTasksOnCurrentThread() const OVERRIDE {
     return BrowserThread::CurrentlyOn(id_);
   }
 
+ protected:
+  virtual ~BrowserThreadMessageLoopProxy() {}
+
  private:
   BrowserThread::ID id_;
   DISALLOW_COPY_AND_ASSIGN(BrowserThreadMessageLoopProxy);
 };
 
 // static
 bool BrowserThread::PostBlockingPoolTask(
     const tracked_objects::Location& from_here,
     const base::Closure& task) {
   return g_globals.Get().blocking_pool->PostWorkerTask(from_here, task);
@@ skipping 177 matching lines @@
   AtomicWord* storage = reinterpret_cast<AtomicWord*>(
       &globals.thread_delegates[identifier]);
   AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange(
       storage, reinterpret_cast<AtomicWord>(delegate));
 
   // This catches registration when previously registered.
   DCHECK(!delegate || !old_pointer);
 }
 
 }  // namespace content