Cast: Fix rtcp event dedup logic in rtcp_receiver.

media/cast/rtcp/rtcp_utility.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_UTILITY_H_
 #define MEDIA_CAST_RTCP_RTCP_UTILITY_H_
 
 #include "media/cast/cast_config.h"
 #include "media/cast/cast_defines.h"
+#include "media/cast/logging/logging_defines.h"
 #include "media/cast/rtcp/rtcp_defines.h"
 
 namespace media {
 namespace cast {
 
 static const int kRtcpRpsiDataSize = 30;
 
 // RFC 3550 page 44, including end null.
 static const size_t kRtcpCnameSize = 256;
 static const int kRtcpMaxNumberOfRembFeedbackSsrcs = 255;
@@ skipping 316 matching lines @@
   const uint8* rtcp_block_end_;
 
   ParseState state_;
   uint8 number_of_blocks_;
   RtcpFieldTypes field_type_;
   RtcpField field_;
 
   DISALLOW_COPY_AND_ASSIGN(RtcpParser);
 };
 
+// Converts a log event type to an integer value.
+// NOTE: We have only allocated 4 bits to represent the type of event over the
+// wire. Therefore, this function can only return values from 0 to 15.
+uint8 ConvertEventTypeToWireFormat(CastLoggingEvent event);
+
+// The inverse of |ConvertEventTypeToWireFormat()|.
+CastLoggingEvent TranslateToLogEventFromWireFormat(uint8 event);
+
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RTCP_RTCP_UTILITY_H_