Style fixes for cast_unittest to build

media/cast/cast_sender.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.
 //
 // This is the main interface for the cast sender. All configuration are done
 // at creation.
 //
 // The FrameInput and PacketReciever interfaces should normally be accessed from
 // the IO thread. However they are allowed to be called from any thread.
 
@@ skipping 38 matching lines @@
                                    const base::Closure callback) = 0;
 
   // The audio_frame must be valid until the callback is called.
   // The callback is called from the main cast thread as soon as
   // the cast sender is done with the frame; it does not mean that the encoded
   // frame has been sent out.
   virtual void InsertCodedAudioFrame(const EncodedAudioFrame* audio_frame,
                                      const base::TimeTicks& recorded_time,
                                      const base::Closure callback) = 0;
 
+ protected:
   virtual ~FrameInput() {}
+
+ private:
+  friend class base::RefCountedThreadSafe<FrameInput>;
 };
 
 // This Class is thread safe.
 // The provided PacketSender object will always be called form the main cast
 // thread.
 class CastSender {
  public:
   static CastSender* CreateCastSender(
       scoped_refptr<CastThread> cast_thread,
       const AudioSenderConfig& audio_config,
@@ skipping 10 matching lines @@
 
   // All RTCP packets for the session should be inserted to this object.
   // Can be called from any thread.
   virtual scoped_refptr<PacketReceiver> packet_receiver() = 0;
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_CAST_SENDER_H_