Remove lifetime from the Event

Lifetimes don't work nicely when dealing with multithreaded environments
in the current design of the existing winit's event handling model, so
remove it in favor of `InnerSizeWriter` fences passed to client, so they
could try to update the size.

Fixes #1387.

src/platform_impl/ios/event_loop.rs

@@ -33,7 +33,7 @@ use crate::{
 
 #[derive(Debug)]
 pub(crate) enum EventWrapper {
-    StaticEvent(Event<'static, Never>),
+    StaticEvent(Event<Never>),
     EventProxy(EventProxy),
 }
 
@@ -106,7 +106,7 @@ impl<T: 'static> EventLoop<T> {
 
     pub fn run<F>(self, event_handler: F) -> !
     where
-        F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
+        F: 'static + FnMut(Event<T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
     {
         unsafe {
             let application = UIApplication::shared(MainThreadMarker::new().unwrap());
@@ -315,7 +315,7 @@ fn setup_control_flow_observers() {
 pub enum Never {}
 
 pub trait EventHandler: Debug {
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow);
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow);
     fn handle_user_events(&mut self, control_flow: &mut ControlFlow);
 }
 
@@ -334,10 +334,10 @@ impl<F, T: 'static> Debug for EventLoopHandler<F, T> {
 
 impl<F, T> EventHandler for EventLoopHandler<F, T>
 where
-    F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
+    F: 'static + FnMut(Event<T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
     T: 'static,
 {
-    fn handle_nonuser_event(&mut self, event: Event<'_, Never>, control_flow: &mut ControlFlow) {
+    fn handle_nonuser_event(&mut self, event: Event<Never>, control_flow: &mut ControlFlow) {
         (self.f)(
             event.map_nonuser_event().unwrap(),
             &self.event_loop,