Service Workers: Cache.put() should resolve to undefined

LayoutTests/http/tests/serviceworker/cache-put-expected.txt

Index: LayoutTests/http/tests/serviceworker/cache-put-expected.txt
diff --git a/LayoutTests/http/tests/serviceworker/cache-put-expected.txt b/LayoutTests/http/tests/serviceworker/cache-put-expected.txt
index eeba38f858393cce79dd3a102961ae559c01976d..acf77727cd3cea606d9abfb415895d40e840ffdf 100644
--- a/LayoutTests/http/tests/serviceworker/cache-put-expected.txt
+++ b/LayoutTests/http/tests/serviceworker/cache-put-expected.txt
@@ -1,6 +1,6 @@
 This is a testharness.js-based test.
 PASS Service Worker: Cache.put 
-FAIL Cache.put called with simple Request and Response assert_equals: Cache.put should resolve with undefined on success. expected (undefined) undefined but got (object) object "[object Response]"
+PASS Cache.put called with simple Request and Response 
 PASS Cache.put called with Request and Response from fetch() 
 FAIL Cache.put with Request containing a body assert_false: Cache.put should not consume Request body. expected false got true
 FAIL Cache.put with a Response containing an empty URL assert_equals: Cache.put should update the cache with new Request and Response. :[object].url expected "" but got "https://example.com/foo"