Add the QuicRandom interface with a default implementation that is

net/quic/crypto/quic_random_test.cc

+// Copyright (c) 2012 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/crypto/quic_random.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace test {
+
+TEST(QuicRandomTest, RandBytes) {
+  unsigned char buf1[16];
+  unsigned char buf2[16];
+  memset(buf1, 0xaf, sizeof(buf1));
+  memset(buf2, 0xaf, sizeof(buf2));
+  ASSERT_TRUE(memcmp(buf1, buf2, sizeof(buf1)) == 0);
+
+  QuicRandom* rng = QuicRandom::GetInstance();
+  rng->RandBytes(buf1, sizeof(buf1));
+  EXPECT_FALSE(memcmp(buf1, buf2, sizeof(buf1)) == 0);
+}
+
+TEST(QuicRandomTest, RandUint64) {
+  QuicRandom* rng = QuicRandom::GetInstance();
+  uint64 value1 = rng->RandUint64();
+  uint64 value2 = rng->RandUint64();
+  EXPECT_NE(value1, value2);
+}
+
+TEST(QuicRandomTest, Reseed) {
+  char buf[1024];
+  memset(buf, 0xaf, sizeof(buf));
+
+  QuicRandom* rng = QuicRandom::GetInstance();
+  rng->Reseed(buf, sizeof(buf));
+}
+
+}  // namespace test
+
+}  // namespace net