Be able to build cast_unittest and related targets in Chrome tree

media/cast/cast_thread.h

 // Copyright 2013 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.
 
 #ifndef MEDIA_CAST_CAST_THREAD_H_
 #define MEDIA_CAST_CAST_THREAD_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/task_runner.h"
@@ skipping 34 matching lines @@
   // the target thread may already have a Quit message in its queue.
   bool PostTask(ThreadId identifier,
                 const tracked_objects::Location& from_here,
                 const base::Closure& task);
 
   bool PostDelayedTask(ThreadId identifier,
                        const tracked_objects::Location& from_here,
                        const base::Closure& task,
                        base::TimeDelta delay);
 
+ protected:
+  virtual ~CastThread();
+
  private:
+  friend class base::RefCountedThreadSafe<CastThread>;
+
   scoped_refptr<base::TaskRunner> GetMessageTaskRunnerForThread(
       ThreadId identifier);
 
   scoped_refptr<base::TaskRunner> main_thread_proxy_;
   scoped_refptr<base::TaskRunner> audio_encode_thread_proxy_;
   scoped_refptr<base::TaskRunner> audio_decode_thread_proxy_;
   scoped_refptr<base::TaskRunner> video_encode_thread_proxy_;
   scoped_refptr<base::TaskRunner> video_decode_thread_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(CastThread);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_CAST_THREAD_H_