Make EventStreamSubscription DDC safe.

pkg/dev_compiler/lib/js/common/dart_sdk.js

Index: pkg/dev_compiler/lib/js/common/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/common/dart_sdk.js b/pkg/dev_compiler/lib/js/common/dart_sdk.js
index cbf93e59ca6a0395933b4ba22f27f3083c2e8f3e..70e86d02d66f49166178be503aecaefae34388e2 100644
--- a/pkg/dev_compiler/lib/js/common/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/common/dart_sdk.js
@@ -583,6 +583,7 @@
   let EventStreamProviderOfDeviceOrientationEvent = () => (EventStreamProviderOfDeviceOrientationEvent = dart.constFn(html$.EventStreamProvider$(html$.DeviceOrientationEvent)))();
   let EventStreamProviderOfAnimationEvent = () => (EventStreamProviderOfAnimationEvent = dart.constFn(html$.EventStreamProvider$(html$.AnimationEvent)))();
   let EventStreamProviderOfBeforeUnloadEvent = () => (EventStreamProviderOfBeforeUnloadEvent = dart.constFn(html$.EventStreamProvider$(html$.BeforeUnloadEvent)))();
+  let _EventStreamOfBeforeUnloadEvent = () => (_EventStreamOfBeforeUnloadEvent = dart.constFn(html$._EventStream$(html$.BeforeUnloadEvent)))();
   let StreamControllerOfBeforeUnloadEvent = () => (StreamControllerOfBeforeUnloadEvent = dart.constFn(async.StreamController$(html$.BeforeUnloadEvent)))();
   let _ElementEventStreamImplOfBeforeUnloadEvent = () => (_ElementEventStreamImplOfBeforeUnloadEvent = dart.constFn(html$._ElementEventStreamImpl$(html$.BeforeUnloadEvent)))();
   let _ElementListEventStreamImplOfBeforeUnloadEvent = () => (_ElementListEventStreamImplOfBeforeUnloadEvent = dart.constFn(html$._ElementListEventStreamImpl$(html$.BeforeUnloadEvent)))();
@@ -925,6 +926,7 @@
   let RtcStatsResponseTovoid = () => (RtcStatsResponseTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [html$.RtcStatsResponse])))();
   let OptionElementTobool = () => (OptionElementTobool = dart.constFn(dart.definiteFunctionType(core.bool, [html$.OptionElement])))();
   let numTovoid = () => (numTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.num])))();
+  let BeforeUnloadEventTovoid = () => (BeforeUnloadEventTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [html$.BeforeUnloadEvent])))();
   let ElementTovoid$ = () => (ElementTovoid$ = dart.constFn(dart.definiteFunctionType(dart.void, [html$.Element])))();
   let ElementToCssClassSet = () => (ElementToCssClassSet = dart.constFn(dart.definiteFunctionType(html$.CssClassSet, [html$.Element])))();
   let CssClassSetImplTovoid = () => (CssClassSetImplTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [html_common.CssClassSetImpl])))();
@@ -93234,12 +93236,12 @@
     }
     forTarget(e, opts) {
       let useCapture = opts && 'useCapture' in opts ? opts.useCapture : false;
-      let stream = new (_EventStreamOfEvent())(e, this[_eventType], useCapture);
+      let stream = new (_EventStreamOfBeforeUnloadEvent())(e, this[_eventType], useCapture);
       let controller = StreamControllerOfBeforeUnloadEvent().new({sync: true});
       stream.listen(dart.fn(event => {
         let wrapped = new html$._BeforeUnloadEvent(event);
         controller.add(wrapped);
-      }, EventTovoid$()));
+      }, BeforeUnloadEventTovoid()));
       return controller.stream;
     }
     getEventType(target) {
@@ -96401,7 +96403,7 @@
         this[_target$0] = target;
         this[_eventType] = eventType;
         this[_useCapture] = useCapture;
-        this[_onData$0] = html$._wrapZone(html$.Event, dart.dynamic)(_wrapZoneCallbackOfEvent$dynamic()._check(onData));
+        this[_onData$0] = onData == null ? null : html$._wrapZone(html$.Event, dart.dynamic)(dart.fn(e => dart.dcall(onData, e), EventTodynamic()));
         this[_pauseCount$0] = 0;
         this[_tryResume]();
       }
@@ -96452,10 +96454,12 @@
           this[_target$0][dartx.removeEventListener](this[_eventType], this[_onData$0], this[_useCapture]);
         }
       }
-      asFuture(futureValue) {
-        if (futureValue === void 0) futureValue = null;
-        let completer = async.Completer.new();
-        return completer.future;
+      asFuture(E) {
+        return futureValue => {
+          if (futureValue === void 0) futureValue = null;
+          let completer = async.Completer$(E).new();
+          return completer.future;
+        };
       }
     }
     dart.setSignature(_EventStreamSubscription, {
@@ -96480,7 +96484,7 @@
         resume: dart.definiteFunctionType(dart.void, []),
         [_tryResume]: dart.definiteFunctionType(dart.void, []),
         [_unlisten]: dart.definiteFunctionType(dart.void, []),
-        asFuture: dart.definiteFunctionType(async.Future, [], [dart.dynamic])
+        asFuture: dart.definiteFunctionType(E => [async.Future$(E), [], [E]])
       })
     });
     return _EventStreamSubscription;