Get components/signin/public/identity_manager:unit_tests to build when

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: Id6d17a9971b70e33d15ab649cce44466a6dcaf51
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2588641
Commit-Queue: David Roger <droger@chromium.org>
Reviewed-by: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837017}

components/signin/public/identity_manager/identity_manager_unittest.cc

@@ -2052,12 +2052,12 @@ TEST_F(IdentityManagerTest, CallbackSentOnAccountsCookieDeletedByUserAction) {
   base::RunLoop run_loop;
   identity_manager_observer()->SetOnCookieDeletedByUserCallback(
       run_loop.QuitClosure());
-  net::CanonicalCookie cookie(
+  auto cookie = net::CanonicalCookie::CreateUnsafeCookieForTesting(
       "SAPISID", std::string(), ".google.com", "/", base::Time(), base::Time(),
       base::Time(), /*secure=*/true, false, net::CookieSameSite::NO_RESTRICTION,
       net::COOKIE_PRIORITY_DEFAULT, false);
   SimulateCookieDeletedByUser(identity_manager()->GetGaiaCookieManagerService(),
-                              cookie);
+                              *cookie);
   run_loop.Run();
 }
 
@@ -2084,12 +2084,12 @@ TEST_F(IdentityManagerTest, OnNetworkInitialized) {
   // Note that this call differs from calling SimulateCookieDeletedByUser()
   // directly in the sense that SimulateCookieDeletedByUser() does not go
   // through any mojo pipe.
-  net::CanonicalCookie cookie(
+  auto cookie = net::CanonicalCookie::CreateUnsafeCookieForTesting(
       "SAPISID", std::string(), ".google.com", "/", base::Time(), base::Time(),
       base::Time(), /*secure=*/true, false, net::CookieSameSite::NO_RESTRICTION,
       net::COOKIE_PRIORITY_DEFAULT, false);
   test_cookie_manager_ptr->DispatchCookieChange(net::CookieChangeInfo(
-      cookie, net::CookieAccessResult(), net::CookieChangeCause::EXPLICIT));
+      *cookie, net::CookieAccessResult(), net::CookieChangeCause::EXPLICIT));
   run_loop.Run();
 }