According to this startup profile, XPIDatabase.jsm runs during startup and imports osfile.jsm. We should migrate this to the new IOUtils replacement for osfile.jsm when possible.

Stack:

(root) []
XREMain::XRE_main []
XREMain::XRE_main(int, char**, mozilla::BootstrapConfig const&) [libxul.so]
XREMain::XRE_mainRun() [libxul.so]
nsAppStartup::Run() [libxul.so]
nsBaseAppShell::Run() [libxul.so]
MessageLoop::Run() [libxul.so]
mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) [libxul.so]
nsThread::ProcessNextEvent(bool, bool*) [libxul.so]
mozilla::ThrottledEventQueue::Inner::Executor::Run() [libxul.so]
mozilla::ThrottledEventQueue::Inner::ExecuteRunnable() [libxul.so]
mozilla::dom::WorkerRunnable::Run() [libxul.so]
mozilla::dom::MessageEventRunnable::DispatchDOMEvent(JSContext*, mozilla::dom::WorkerPrivate*, mozilla::DOMEventTargetHelper*, bool) [libxul.so]
mozilla::dom::EventTarget::DispatchEvent(mozilla::dom::Event&) [libxul.so]
mozilla::DOMEventTargetHelper::DispatchEvent(mozilla::dom::Event&, mozilla::dom::CallerType, mozilla::ErrorResult&) [libxul.so]
mozilla::EventDispatcher::DispatchDOMEvent(nsISupports*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsPresContext*, nsEventStatus*) [libxul.so]
EventDispatcher::Dispatch []
EventDispatcher::Dispatch message []
mozilla::EventDispatcher::Dispatch(nsISupports*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) [libxul.so]
mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) [libxul.so]
mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) [libxul.so]
<name omitted> [libxul.so]
promise callback []
mozilla::PromiseJobRunnable::Run(mozilla::AutoSlowOperation&) [libxul.so]
mozilla::dom::PromiseJobCallback::Call(mozilla::dom::BindingCallContext&, JS::Handle<JS::Value>, mozilla::ErrorResult&) [libxul.so]
JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) [libxul.so]
js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [libxul.so]
PromiseReactionJob(JSContext*, unsigned int, JS::Value*) [libxul.so]
js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason) [libxul.so]
js::RunScript []
onBeforeBrowserWindowShown/< [resource:///modules/sessionstore/SessionStore.jsm:1918:12]
initializeWindow [resource:///modules/sessionstore/SessionStore.jsm:1712:18]
js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [libxul.so]
Interpret(JSContext*, js::RunState&) [libxul.so]
js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [libxul.so]
XPC_WN_CallMethod(JSContext*, unsigned int, JS::Value*) [libxul.so]
XPCWrappedNative::CallMethod(XPCCallContext&, XPCWrappedNative::CallMode) [libxul.so]
NS_InvokeByIndex [libxul.so]
nsObserverService::NotifyObservers sessionstore-windows-restored []
nsObserverService::NotifyObservers(nsISupports*, char const*, char16_t const*) [libxul.so]
nsObserverList::NotifyObservers(nsISupports*, char const*, char16_t const*) [libxul.so]
SharedStub [libxul.so]
PrepareAndDispatch [libxul.so]
XPCWrappedJS method call []
nsXPCWrappedJS::CallMethod(unsigned short, nsXPTMethodInfo const*, nsXPTCMiniVariant*) [libxul.so]
JS_CallFunctionValue(JSContext*, JS::Handle<JSObject*>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) [libxul.so]
js::RunScript []
observer [resource://gre/modules/addons/XPIProvider.jsm:2629:23]
> asyncLoadDB [resource://gre/modules/addons/XPIDatabase.jsm:1751:13]
asyncLoadDB/this._dbPromise< [resource://gre/modules/addons/XPIDatabase.jsm:1758:29]
js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [libxul.so]
Interpret(JSContext*, js::RunState&) [libxul.so]
js::NativeGetExistingProperty(JSContext*, JS::Handle<JSObject*>, JS::Handle<js::NativeObject*>, JS::Handle<js::Shape*>, JS::MutableHandle<JS::Value>) [libxul.so]
js::CallGetter(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::MutableHandle<JS::Value>) [libxul.so]
js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) [libxul.so]
mozilla::dom::module_getter::ModuleGetter(JSContext*, unsigned int, JS::Value*) [libxul.so]
mozJSComponentLoader::Import(JSContext*, nsTSubstring<char> const&, JS::MutableHandle<JSObject*>, JS::MutableHandle<JSObject*>, bool) [libxul.so]
profiler_get_backtrace() [libxul.so]
Registers::SyncPopulate() [libxul.so]

We should replace these instances of OS.File with the IOUtils equivalent: https://searchfox.org/mozilla-central/rev/803b368879fa332e8e2c1840bf1ec164f7ed2c32/toolkit/mozapps/extensions/internal/XPIDatabase.jsm#31,1553,1772

Depends on D110363

Backed out for causing xpcshell failures on test_corrupt.js.

Push with failures: https://treeherder.mozilla.org/jobs?repo=autoland&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel&revision=6c93b2419ee50246d8f81ad30419d35289491cd9&searchStr=xpc&selectedTaskRun=W018Ju3oQtGx3qsUWt_YOA.0

Failure log: https://treeherder.mozilla.org/logviewer?job_id=335647724&repo=autoland

Backout link: https://hg.mozilla.org/integration/autoland/rev/e06c2941cdfc56de10e6b4fdd0ddfaff800e6b56

https://hg.mozilla.org/mozilla-central/rev/e68ffe9b1978