Rewrote the PRNG using an xorshift* algorithm and moved the files from test/ to base/.

webrtc/modules/remote_bitrate_estimator/bwe_simulations.cc

 /*
  *  Copyright (c) 2014 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 18 matching lines @@
   BweSimulation()
       : BweTest(), random_(Clock::GetRealTimeClock()->TimeInMicroseconds()) {}
   virtual ~BweSimulation() {}
 
  protected:
   void SetUp() override {
     BweTest::SetUp();
     VerboseLogging(true);
   }
 
-  test::Random random_;
+  Random random_;
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(BweSimulation);
 };
 
 INSTANTIATE_TEST_CASE_P(VideoSendersTest,
                         BweSimulation,
                         ::testing::Values(kRembEstimator,
                                           kFullSendSideEstimator,
                                           kNadaEstimator));
@@ skipping 393 matching lines @@
 
   BweTest gcc_test(false);
   gcc_test.RunChoke(kFullSendSideEstimator, capacities_kbps);
 }
 
 #endif  // BWE_TEST_LOGGING_COMPILE_TIME_ENABLE
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc