Get net:net_perftests to build if CanonicalCookie's constructor is

private.

This is part of a larger effort to make CanonicalCookie's generic
constructor private.

This CL replaces uses of the constructor with the factory
CreateUnsafeCookieForTesting. This factory is meant for test-only code
and should not be used in production.

Bug: 1102874
Change-Id: I842f1d66d746bffe17bc060c2554ba1e269d3774
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2588647Reviewed-by: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Lily Chen <chlily@chromium.org>
Commit-Queue: Dylan Cutler <dylancutler@google.com>
Cr-Commit-Position: refs/heads/master@{#836721}

net/extras/sqlite/sqlite_persistent_cookie_store_perftest.cc

@@ -87,10 +87,10 @@ class SQLitePersistentCookieStorePerfTest : public testing::Test {
                  base::TimeDelta::FromMicroseconds(
                      domain_num * kCookiesPerDomain + cookie_num));
     std::string domain_name(base::StringPrintf(".domain_%d.com", domain_num));
-    return CanonicalCookie(base::StringPrintf("Cookie_%d", cookie_num), "1",
-                           domain_name, "/", t, t, t, false, false,
-                           CookieSameSite::NO_RESTRICTION,
-                           COOKIE_PRIORITY_DEFAULT, false);
+    return *CanonicalCookie::CreateUnsafeCookieForTesting(
+        base::StringPrintf("Cookie_%d", cookie_num), "1", domain_name, "/", t,
+        t, t, false, false, CookieSameSite::NO_RESTRICTION,
+        COOKIE_PRIORITY_DEFAULT, false);
   }
 
   void SetUp() override {