Use SHA-1 functions from BoringSSL directly.

net/quic/test_tools/quic_test_utils_test.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/test_tools/quic_test_utils.h"
 
 #include "testing/gtest/include/gtest/gtest-spi.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
@@ skipping 19 matching lines @@
 
 TEST(QuicTestUtilsTest, QuicBandwidth) {
   ExpectApproxEq(QuicBandwidth::FromBytesPerSecond(1000),
                  QuicBandwidth::FromBitsPerSecond(8005), 0.01f);
   EXPECT_NONFATAL_FAILURE(
       ExpectApproxEq(QuicBandwidth::FromBytesPerSecond(1000),
                      QuicBandwidth::FromBitsPerSecond(9005), 0.01f),
       "");
 }
 
+// Ensure that SimpleRandom does not change its output for a fixed seed.
+TEST(QuicTestUtilsTest, SimpleRandomStability) {
+  SimpleRandom rng;
+  rng.set_seed(UINT64_C(0x1234567800010001));
+  EXPECT_EQ(UINT64_C(14865409841904857791), rng.RandUint64());
+  EXPECT_EQ(UINT64_C(12139094019410129741), rng.RandUint64());
+}
+
 }  // namespace test
 }  // namespace net