WebSpeech's SpeechRecognition onerror incorrectly reports ErrorEvent as event (#850)

* WebSpeech's SpeechRecognition onerror incorrectly reports ErrorEvent as event

See: https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognitionError/error

* Make travisCI happy, accept  baseline

Author: shareefalis

baselines/dom.generated.d.ts

@@ -15060,7 +15060,7 @@ interface SpeechRecognitionEventMap {
     "audioend": Event;
     "audiostart": Event;
     "end": Event;
-    "error": Event;
+    "error": ErrorEvent;
     "nomatch": SpeechRecognitionEvent;
     "result": SpeechRecognitionEvent;
     "soundend": Event;
@@ -15079,7 +15079,7 @@ interface SpeechRecognition extends EventTarget {
     onaudioend: ((this: SpeechRecognition, ev: Event) => any) | null;
     onaudiostart: ((this: SpeechRecognition, ev: Event) => any) | null;
     onend: ((this: SpeechRecognition, ev: Event) => any) | null;
-    onerror: ((this: SpeechRecognition, ev: Event) => any) | null;
+    onerror: ((this: SpeechRecognition, ev: ErrorEvent) => any) | null;
     onnomatch: ((this: SpeechRecognition, ev: SpeechRecognitionEvent) => any) | null;
     onresult: ((this: SpeechRecognition, ev: SpeechRecognitionEvent) => any) | null;
     onsoundend: ((this: SpeechRecognition, ev: Event) => any) | null;

inputfiles/addedTypes.json

@@ -1050,7 +1050,7 @@
                         },
                         {
                             "name": "error",
-                            "type": "Event"
+                            "type": "ErrorEvent"
                         },
                         {
                             "name": "end",