Recent refactoring of CookieStoreIOS ( issue 679736 ) has removed the method CookieStoreIOS::CreateCookieStore which was used in both CrNet and Cronet.

The removed method was setting [cookie_storage setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways]; on the shared cookie storage, and its removal has broken cronet tests:

Thread 10 Crashed:: Chrome Network IO Thread
0   org.chromium.net.Cronet       	0x0000000106062c94 base::debug::BreakDebugger() + 20
1   org.chromium.net.Cronet       	0x00000001060cca61 logging::LogMessage::~LogMessage() + 4369
2   org.chromium.net.Cronet       	0x00000001060c9695 logging::LogMessage::~LogMessage() + 21
3   org.chromium.net.Cronet       	0x0000000105fdb072 net::CookieStoreIOS::SetCookieWithOptionsAsync(GURL const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, net::CookieOptions const&, base::Callback<void (bool), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> const&) + 690
4   org.chromium.net.Cronet       	0x0000000106eaab20 net::URLRequestHttpJob::SaveCookiesAndNotifyHeadersComplete(int) + 2128
5   org.chromium.net.Cronet       	0x0000000106ea984d net::URLRequestHttpJob::OnStartCompleted(int) + 2573
6   org.chromium.net.Cronet       	0x0000000106eb3847 void base::internal::FunctorTraits<void (net::URLRequestHttpJob::*)(int), void>::Invoke<net::URLRequestHttpJob*, int>(void (net::URLRequestHttpJob::*)(int), net::URLRequestHttpJob*&&, int&&) + 151
7   org.chromium.net.Cronet       	0x0000000106eb374f void base::internal::InvokeHelper<false, void>::MakeItSo<void (net::URLRequestHttpJob::* const&)(int), net::URLRequestHttpJob*, int>(void (net::URLRequestHttpJob::* const&&&)(int), net::URLRequestHttpJob*&&, int&&) + 95
8   org.chromium.net.Cronet       	0x0000000106eb36dd void base::internal::Invoker<base::internal::BindState<void (net::URLRequestHttpJob::*)(int), base::internal::UnretainedWrapper<net::URLRequestHttpJob> >, void (int)>::RunImpl<void (net::URLRequestHttpJob::* const&)(int), std::__1::tuple<base::internal::UnretainedWrapper<net::URLRequestHttpJob> > const&, 0ul>(void (net::URLRequestHttpJob::* const&&&)(int), std::__1::tuple<base::internal::UnretainedWrapper<net::URLRequestHttpJob> > const&&&, base::IndexSequence<0ul>, int&&) + 93
9   org.chromium.net.Cronet       	0x0000000106eb3624 base::internal::Invoker<base::internal::BindState<void (net::URLRequestHttpJob::*)(int), base::internal::UnretainedWrapper<net::URLRequestHttpJob> >, void (int)>::Run(base::internal::BindStateBase*, int&&) + 68
10  org.chromium.net.Cronet       	0x0000000105f9264a base::internal::RunMixin<base::Callback<void (int), (base::internal::CopyMode)1, (base::internal::RepeatMode)1> >::Run(int) const + 74
11  org.chromium.net.Cronet       	0x00000001068543fa net::HttpCache::Transaction::DoLoop(int) + 5498

Ideally Cronet should NOT change Cookie Accept Policy set by the app, but instead comply with it, possibly by using different Cookie Store implementation.