[rtp_rtcp] fixed namespaces lint warnings

webrtc/modules/rtp_rtcp/source/rtcp_utility.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 23 matching lines @@
   if (requests_ == 0 ||
       webrtc::IsNewerSequenceNumber(sequence_number, max_sequence_number_)) {
     max_sequence_number_ =  sequence_number;
     ++unique_requests_;
   }
   ++requests_;
 }
 
 uint32_t MidNtp(uint32_t ntp_sec, uint32_t ntp_frac) {
   return (ntp_sec << 16) + (ntp_frac >> 16);
-}  // end RTCPUtility
 }
+}  // namespace RTCPUtility
 
 // RTCPParserV2 : currently read only
 RTCPUtility::RTCPParserV2::RTCPParserV2(const uint8_t* rtcpData,
                                         size_t rtcpDataLength,
                                         bool rtcpReducedSizeEnable)
     : _ptrRTCPDataBegin(rtcpData),
       _RTCPReducedSizeEnable(rtcpReducedSizeEnable),
       _ptrRTCPDataEnd(rtcpData + rtcpDataLength),
       _validPacket(false),
       _ptrRTCPData(rtcpData),
@@ skipping 1646 matching lines @@
 const RTCPUtility::RtcpCommonHeader*
 RTCPUtility::RTCPPacketIterator::Current() {
     if (!_ptrBlock)
     {
         return NULL;
     }
 
     return &_header;
 }
 }  // namespace webrtc