Update from https://crrev.com/311076

net/http/http_response_info_unittest.cc

+// Copyright 2015 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/http/http_response_info.h"
+
+#include "base/pickle.h"
+#include "net/http/http_response_headers.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+class HttpResponseInfoTest : public testing::Test {
+ protected:
+  void SetUp() override {
+    response_info_.headers = new net::HttpResponseHeaders("");
+  }
+
+  void PickleAndRestore(const net::HttpResponseInfo& response_info,
+                        net::HttpResponseInfo* restored_response_info) const {
+    Pickle pickle;
+    response_info.Persist(&pickle, false, false);
+    bool truncated = false;
+    restored_response_info->InitFromPickle(pickle, &truncated);
+  }
+
+  net::HttpResponseInfo response_info_;
+};
+
+TEST_F(HttpResponseInfoTest, UnusedSincePrefetchDefault) {
+  EXPECT_FALSE(response_info_.unused_since_prefetch);
+}
+
+TEST_F(HttpResponseInfoTest, UnusedSincePrefetchCopy) {
+  response_info_.unused_since_prefetch = true;
+  net::HttpResponseInfo response_info_clone(response_info_);
+  EXPECT_TRUE(response_info_clone.unused_since_prefetch);
+}
+
+TEST_F(HttpResponseInfoTest, UnusedSincePrefetchPersistFalse) {
+  net::HttpResponseInfo restored_response_info;
+  PickleAndRestore(response_info_, &restored_response_info);
+  EXPECT_FALSE(restored_response_info.unused_since_prefetch);
+}
+
+TEST_F(HttpResponseInfoTest, UnusedSincePrefetchPersistTrue) {
+  response_info_.unused_since_prefetch = true;
+  net::HttpResponseInfo restored_response_info;
+  PickleAndRestore(response_info_, &restored_response_info);
+  EXPECT_TRUE(restored_response_info.unused_since_prefetch);
+}