Fixing TSan data race warning in video end-to-end tests.

webrtc/video/end_to_end_tests.cc

 /*
  *  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.
  */
 #include <algorithm>
@@ skipping 80 matching lines @@
       }
       if (need_rtcp_) {
         ADD_FAILURE() << "Expected RTCP packet not sent.";
       }
     }
 
    private:
     bool SendRtp(const uint8_t* packet,
                  size_t length,
                  const PacketOptions& options) override {
+      rtc::CritScope lock(&crit_);
       need_rtp_ = false;
       return true;
     }
 
     bool SendRtcp(const uint8_t* packet, size_t length) override {
+      rtc::CritScope lock(&crit_);
       need_rtcp_ = false;
       return true;
     }
     bool need_rtp_;
     bool need_rtcp_;
+    rtc::CriticalSection crit_;
   };
 
   void DecodesRetransmittedFrame(bool enable_rtx, bool enable_red);
   void ReceivesPliAndRecovers(int rtp_history_ms);
   void RespectsRtcpMode(RtcpMode rtcp_mode);
   void TestXrReceiverReferenceTimeReport(bool enable_rrtr);
   void TestSendsSetSsrcs(size_t num_ssrcs, bool send_single_ssrc_first);
   void TestRtpStatePreservation(bool use_rtx, bool provoke_rtcpsr_before_rtp);
   void VerifyHistogramStats(bool use_rtx, bool use_red, bool screenshare);
   void VerifyNewVideoSendStreamsRespectNetworkState(
@@ skipping 3610 matching lines @@
    private:
     bool video_observed_;
     bool audio_observed_;
     SequenceNumberUnwrapper unwrapper_;
     std::set<int64_t> received_packet_ids_;
   } test;
 
   RunBaseTest(&test);
 }
 }  // namespace webrtc