Cast: Fix rtcp event dedup logic in rtcp_receiver.

media/cast/rtcp/rtcp_receiver.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_RTCP_RTCP_RECEIVER_H_
 #define MEDIA_CAST_RTCP_RTCP_RECEIVER_H_
 
 #include <queue>
 
 #include "base/containers/hash_tables.h"
@@ skipping 105 matching lines @@
   // Not owned by this class.
   RtcpSenderFeedback* const sender_feedback_;
   RtcpReceiverFeedback* const receiver_feedback_;
   RtcpRttFeedback* const rtt_feedback_;
   scoped_refptr<CastEnvironment> cast_environment_;
 
   transport::FrameIdWrapHelper ack_frame_id_wrap_helper_;
 
   // Maintains a history of receiver events.
   size_t receiver_event_history_size_;
-  base::hash_set<size_t> receiver_event_hash_set_;
-  std::queue<size_t> receiver_event_hash_queue_;
+  typedef std::pair<uint64, uint64> ReceiverEventKey;
+  base::hash_set<ReceiverEventKey> receiver_event_key_set_;
+  std::queue<ReceiverEventKey> receiver_event_key_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(RtcpReceiver);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RTCP_RTCP_RECEIVER_H_