Currently it triggers ###!!! ASSERTION: Trying to initialize PSM/NSS in a non-chrome process!: 'Error', file /home/cjones/mozilla/mozilla-central/security/manager/ssl/src/nsNSSComponent.cpp, line 307 EnsureNSSInitialized(EnsureNSSOperator) (/home/cjones/mozilla/mozilla-central/security/manager/ssl/src/nsNSSComponent.cpp:308) nsNSSComponentConstructor (/home/cjones/mozilla/mozilla-central/security/manager/ssl/src/nsNSSModule.cpp:216) mozilla::GenericFactory::CreateInstance(nsISupports*, nsID const&, void**) (/home/cjones/mozilla/ff-dbg/xpcom/build/GenericFactory.cpp:49) nsComponentManagerImpl::CreateInstance(nsID const&, nsISupports*, nsID const&, void**) (/home/cjones/mozilla/mozilla-central/xpcom/components/nsComponentManager.cpp:1228) nsComponentManagerImpl::GetService(nsID const&, nsID const&, void**) (/home/cjones/mozilla/mozilla-central/xpcom/components/nsComponentManager.cpp:1480) CallGetService(nsID const&, nsID const&, void**) (/home/cjones/mozilla/ff-dbg/xpcom/build/nsComponentManagerUtils.cpp:84) nsGetServiceByCIDWithError::operator()(nsID const&, void**) const (/home/cjones/mozilla/ff-dbg/xpcom/build/nsComponentManagerUtils.cpp:266) nsCOMPtr<nsINSSComponent>::assign_from_gs_cid_with_error(nsGetServiceByCIDWithError const&, nsID const&) (/home/cjones/mozilla/ff-dbg/security/manager/ssl/src/../../../../dist/include/nsCOMPtr.h:1242) nsCOMPtr<nsINSSComponent>::operator=(nsGetServiceByCIDWithError const&) (/home/cjones/mozilla/ff-dbg/security/manager/ssl/src/../../../../dist/include/nsCOMPtr.h:706) nsKeygenFormProcessor::Init() (/home/cjones/mozilla/mozilla-central/security/manager/ssl/src/nsKeygenHandler.cpp:336) nsKeygenFormProcessor::Create(nsISupports*, nsID const&, void**) (/home/cjones/mozilla/mozilla-central/security/manager/ssl/src/nsKeygenHandler.cpp:322) mozilla::GenericFactory::CreateInstance(nsISupports*, nsID const&, void**) (/home/cjones/mozilla/ff-dbg/xpcom/build/GenericFactory.cpp:49) nsComponentManagerImpl::CreateInstance(nsID const&, nsISupports*, nsID const&, void**) (/home/cjones/mozilla/mozilla-central/xpcom/components/nsComponentManager.cpp:1228) nsComponentManagerImpl::GetService(nsID const&, nsID const&, void**) (/home/cjones/mozilla/mozilla-central/xpcom/components/nsComponentManager.cpp:1480) CallGetService(nsID const&, nsID const&, void**) (/home/cjones/mozilla/ff-dbg/xpcom/build/nsComponentManagerUtils.cpp:84) nsGetServiceByCIDWithError::operator()(nsID const&, void**) const (/home/cjones/mozilla/ff-dbg/xpcom/build/nsComponentManagerUtils.cpp:266) nsCOMPtr<nsIFormProcessor>::assign_from_gs_cid_with_error(nsGetServiceByCIDWithError const&, nsID const&) (/home/cjones/mozilla/ff-dbg/parser/html/../../dist/include/nsCOMPtr.h:1242) nsCOMPtr (/home/cjones/mozilla/ff-dbg/parser/html/../../dist/include/nsCOMPtr.h:620) nsHtml5TreeOperation::Perform(nsHtml5TreeOpExecutor*, nsIContent**) (/home/cjones/mozilla/mozilla-central/parser/html/nsHtml5TreeOperation.cpp:435) nsHtml5TreeOpExecutor::RunFlushLoop() (/home/cjones/mozilla/mozilla-central/parser/html/nsHtml5TreeOpExecutor.cpp:492) nsHtml5ExecutorFlusher::Run() (/home/cjones/mozilla/mozilla-central/parser/html/nsHtml5StreamParser.cpp:154) nsThread::ProcessNextEvent(int, int*) (/home/cjones/mozilla/mozilla-central/xpcom/threads/nsThread.cpp:626) NS_ProcessNextEvent_P(nsIThread*, int) (/home/cjones/mozilla/ff-dbg/xpcom/build/nsThreadUtils.cpp:250)

Nom'ing for blocking in case anyone knows of major web compat issues here.

This may or may not be related to bug 582297.