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

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

Index: LayoutTests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt
diff --git a/LayoutTests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt b/LayoutTests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt
index b31b190e6b9d3327f05c7652771a9d3f8232325f..bb87b7762e38ea31aec9a4a74ff998c0c897211d 100644
--- a/LayoutTests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt
+++ b/LayoutTests/virtual/stable/webexposed/global-interface-listing-dedicated-worker-expected.txt
@@ -58,6 +58,9 @@ 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
@@ -168,12 +171,43 @@ 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 File
 [Worker]     method constructor
 [Worker] interface FileError