[rtp_rtcp] lint build/include errors fixed

webrtc/modules/rtp_rtcp/source/receive_statistics_impl.h

 /*
  *  Copyright (c) 2013 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.
  */
 
 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RECEIVE_STATISTICS_IMPL_H_
 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RECEIVE_STATISTICS_IMPL_H_
 
 #include "webrtc/modules/rtp_rtcp/include/receive_statistics.h"
 
 #include <algorithm>
+#include <map>
 
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/modules/rtp_rtcp/source/bitrate.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 
 namespace webrtc {
 
 class CriticalSectionWrapper;
 
 class StreamStatisticianImpl : public StreamStatistician {
@@ skipping 107 matching lines @@
   Clock* clock_;
   rtc::scoped_ptr<CriticalSectionWrapper> receive_statistics_lock_;
   int64_t last_rate_update_ms_;
   StatisticianImplMap statisticians_;
 
   RtcpStatisticsCallback* rtcp_stats_callback_;
   StreamDataCountersCallback* rtp_stats_callback_;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RECEIVE_STATISTICS_IMPL_H_