Chrome Version: ToT build with target_os = chromeos and dcheck_always_on = true

What steps will reproduce the problem?
(1) Set up a test policy server that responds to component policy fetches (i.e. with "google/chrome/extension" or "google/chromeos/signinextension" type) with a PolicyFetchResponse that has settings_entity_id = "".
(2) Start a Chrome instance with pointing it to the policy server (using the --device-management-url command line flag)

What is the expected result?
Chrome ignores the fetched invalid component policy.

What happens instead?
Chrome crashes:
[FATAL:resource_cache.cc(223)] Check failed: false. 
#0 0x7f7ac385d66b base::debug::StackTrace::StackTrace()
#1 0x7f7ac385bcec base::debug::StackTrace::StackTrace()
#2 0x7f7ac38c22dc logging::LogMessage::~LogMessage()
#3 0x7f7ab833933f policy::ResourceCache::VerifyKeyPathAndGetSubkeyPath()
#4 0x7f7ab8339b81 policy::ResourceCache::Delete()
#5 0x7f7ab830f0be policy::ComponentCloudPolicyStore::Delete()
#6 0x7f7ab8316f55 policy::ComponentCloudPolicyUpdater::UpdateExternalPolicy()
#7 0x7f7ab8302097 policy::ComponentCloudPolicyService::Backend::UpdateWithLastFetchedPolicy()
#8 0x7f7ab8301d0b policy::ComponentCloudPolicyService::Backend::SetCredentials()
#9 0x7f7ab830a22e _ZN4base8internal13FunctorTraitsIMN6policy27ComponentCloudPolicyService7BackendEFvRKSsS6_S6_S6_iEvE6InvokeIPS4_JS6_S6_S6_S6_RKiEEEvS8_OT_DpOT0_
#10 0x7f7ab8309ff7 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIRKMN6policy27ComponentCloudPolicyService7BackendEFvRKSsS8_S8_S8_iEJPS6_S8_S8_S8_S8_RKiEEEvOT_DpOT0_
#11 0x7f7ab8309f28 _ZN4base8internal7InvokerINS0_9BindStateIMN6policy27ComponentCloudPolicyService7BackendEFvRKSsS7_S7_S7_iEJNS0_17UnretainedWrapperIS5_EESsSsSsSsiEEEFvvEE7RunImplI
RKS9_RKSt5tupleIJSB_SsSsSsSsiEEJLm0ELm1ELm2ELm3ELm4ELm5EEEEvOT_OT0_NS_13IndexSequenceIJXspT1_EEEE
#12 0x7f7ab8309d3c _ZN4base8internal7InvokerINS0_9BindStateIMN6policy27ComponentCloudPolicyService7BackendEFvRKSsS7_S7_S7_iEJNS0_17UnretainedWrapperIS5_EESsSsSsSsiEEEFvvEE3RunEPNS0
_13BindStateBaseE
#13 0x7f7ac3862d61 _ZNO4base8internal8RunMixinINS_8CallbackIFvvELNS0_8CopyModeE0ELNS0_10RepeatModeE0EEEE3RunEv
#14 0x7f7ac3862651 base::debug::TaskAnnotator::RunTask()
#15 0x7f7ac38e92be base::MessageLoop::RunTask()
#16 0x7f7ac38e9534 base::MessageLoop::DeferOrRunPendingTask()
#17 0x7f7ac38e9824 base::MessageLoop::DoWork()
#18 0x7f7ac3900adc base::MessagePumpLibevent::Run()
#19 0x7f7ac38e8ea2 base::MessageLoop::RunHandler()
#20 0x7f7ac398c9e4 base::RunLoop::Run()
#21 0x7f7ac3a2a6e2 base::Thread::Run()
#22 0x7f7abcf4fa58 content::BrowserThreadImpl::FileThreadRun()
#23 0x7f7abcf4ff9d content::BrowserThreadImpl::Run()
#24 0x7f7ac3a2aed3 base::Thread::ThreadMain()
#25 0x7f7ac3a135fa base::(anonymous namespace)::ThreadFunc()
#26 0x7f7ac3c95184 start_thread
#27 0x7f7aac3da37d clone