Reland of "Expose events in workers as per latest DOM specification"

LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt

Index: LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt
diff --git a/LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt b/LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt
index a9759b678adc404384db5cb312e0dbfe9f0de26c..9267b74acacbce531d3b1c5bb6d1b68e6c802510 100644
--- a/LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt
+++ b/LayoutTests/webexposed/global-interface-listing-dedicated-worker-expected.txt
@@ -63,6 +63,9 @@ Starting worker: resources/global-interface-listing.js
 [Worker]     method getRandomValues
 [Worker] interface CryptoKey
 [Worker]     method constructor
+[Worker] interface CustomEvent
+[Worker]     method constructor
+[Worker]     method initCustomEvent
 [Worker] interface DOMException
 [Worker]     attribute ABORT_ERR
 [Worker]     attribute DATA_CLONE_ERR
@@ -173,12 +176,43 @@ Starting worker: resources/global-interface-listing.js
 [Worker]     getter stack
 [Worker]     method constructor
 [Worker]     setter stack
+[Worker] interface Event
+[Worker]     attribute AT_TARGET
+[Worker]     attribute BLUR
+[Worker]     attribute BUBBLING_PHASE
+[Worker]     attribute CAPTURING_PHASE
+[Worker]     attribute CHANGE
+[Worker]     attribute CLICK
+[Worker]     attribute DBLCLICK
+[Worker]     attribute DRAGDROP
+[Worker]     attribute FOCUS
+[Worker]     attribute KEYDOWN
+[Worker]     attribute KEYPRESS
+[Worker]     attribute KEYUP
+[Worker]     attribute MOUSEDOWN
+[Worker]     attribute MOUSEDRAG
+[Worker]     attribute MOUSEMOVE
+[Worker]     attribute MOUSEOUT
+[Worker]     attribute MOUSEOVER
+[Worker]     attribute MOUSEUP
+[Worker]     attribute NONE
+[Worker]     attribute SELECT
+[Worker]     method constructor
+[Worker]     method initEvent
+[Worker]     method preventDefault
+[Worker]     method stopImmediatePropagation
+[Worker]     method stopPropagation
 [Worker] interface EventSource
 [Worker]     attribute CLOSED
 [Worker]     attribute CONNECTING
 [Worker]     attribute OPEN
 [Worker]     method close
 [Worker]     method constructor
+[Worker] interface EventTarget
+[Worker]     method addEventListener
+[Worker]     method constructor
+[Worker]     method dispatchEvent
+[Worker]     method removeEventListener
 [Worker] interface ExclusiveStreamReader
 [Worker]     method cancel
 [Worker]     method constructor