Implement the MediaStreamTrackEvent constructor

third_party/WebKit/LayoutTests/imported/wpt/mediacapture-streams/MediaStreamTrackEvent-constructor.https-expected.txt

Index: third_party/WebKit/LayoutTests/imported/wpt/mediacapture-streams/MediaStreamTrackEvent-constructor.https-expected.txt
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/mediacapture-streams/MediaStreamTrackEvent-constructor.https-expected.txt b/third_party/WebKit/LayoutTests/imported/wpt/mediacapture-streams/MediaStreamTrackEvent-constructor.https-expected.txt
deleted file mode 100644
index d01a7c7d31c349123c46438fc93f4ce40b761311..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/imported/wpt/mediacapture-streams/MediaStreamTrackEvent-constructor.https-expected.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-This is a testharness.js-based test.
-FAIL The eventInitDict argument is required MediaStreamTrackEvent is not defined
-FAIL The eventInitDict's track member is required. assert_throws: function "function () {
-    new MediaStreamTrackEvent("type", {});
-  }" threw object "ReferenceError: MediaStreamTrackEvent is not defined" ("ReferenceError") expected object "TypeError" ("TypeError")
-FAIL The MediaStreamTrackEvent instance's track attribute is set. promise_test: Unhandled rejection with value: object "ReferenceError: MediaStreamTrackEvent is not defined"
-Harness: the test ran to completion.
-