[rtp_rtcp] fixed namespaces lint warnings

webrtc/modules/rtp_rtcp/test/BWEStandAlone/TestSenderReceiver.h

 /*
  *  Copyright (c) 2011 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_TEST_BWESTANDALONE_TESTSENDERRECEIVER_H_
 #define WEBRTC_MODULES_RTP_RTCP_TEST_BWESTANDALONE_TESTSENDERRECEIVER_H_
 
 #include "webrtc/base/platform_thread.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 #include "webrtc/test/channel_transport/udp_transport.h"
 #include "webrtc/typedefs.h"
 
 class TestLoadGenerator;
 namespace webrtc {
 class CriticalSectionWrapper;
 class EventWrapper;
-}
-
-using namespace webrtc;
 
 #define MAX_BITRATE_KBPS 50000
 
 
 class SendRecCB
 {
 public:
     virtual void OnOnNetworkChanged(const uint32_t bitrateTarget,
         const uint8_t fractionLost,
         const uint16_t roundTripTimeMs,
@@ skipping 105 matching lines @@
     bool _running;
     int8_t _payloadType;
     TestLoadGenerator* _loadGenerator;
     bool _isSender;
     bool _isReceiver;
     SendRecCB * _sendRecCB;
     size_t _lastBytesReceived;
     int64_t _lastTime;
 
 };
-
+}  // namespace webrtc
 #endif // WEBRTC_MODULES_RTP_RTCP_TEST_BWESTANDALONE_TESTSENDERRECEIVER_H_