[Fetch] Expose Fetch API to window/workers without flags

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 5e3b1fc22281db8572492232e0d40f5b84299946..b31b190e6b9d3327f05c7652771a9d3f8232325f 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
@@ -246,6 +246,18 @@ Starting worker: resources/global-interface-listing.js
 [Worker]     method call
 [Worker]     method constructor
 [Worker]     method toString
+[Worker] interface Headers
+[Worker]     method append
+[Worker]     method constructor
+[Worker]     method delete
+[Worker]     method entries
+[Worker]     method forEach
+[Worker]     method get
+[Worker]     method getAll
+[Worker]     method has
+[Worker]     method keys
+[Worker]     method set
+[Worker]     method values
 [Worker] interface IDBCursor
 [Worker]     method advance
 [Worker]     method constructor
@@ -403,6 +415,20 @@ Starting worker: resources/global-interface-listing.js
 [Worker]     method exec
 [Worker]     method test
 [Worker]     method toString
+[Worker] interface Request
+[Worker]     method arrayBuffer
+[Worker]     method blob
+[Worker]     method clone
+[Worker]     method constructor
+[Worker]     method json
+[Worker]     method text
+[Worker] interface Response
+[Worker]     method arrayBuffer
+[Worker]     method blob
+[Worker]     method clone
+[Worker]     method constructor
+[Worker]     method json
+[Worker]     method text
 [Worker] interface Set
 [Worker]     getter size
 [Worker]     method add
@@ -576,6 +602,7 @@ Starting worker: resources/global-interface-listing.js
 [Worker]     method clearTimeout
 [Worker]     method close
 [Worker]     method constructor
+[Worker]     method fetch
 [Worker]     method importScripts
 [Worker]     method setInterval
 [Worker]     method setTimeout