Revert of Make initEvent's first argument non-optional

third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt

Index: third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt
diff --git a/third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt b/third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt
index d4573b98f37c4a83d6ba9f2bcca4b39a0f6373c7..37f7c805eeb23297188b7e2236a4a0c277c0a97c 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt
+++ b/third_party/WebKit/LayoutTests/external/wpt/dom/interfaces-expected.txt
@@ -1,5 +1,5 @@
 This is a testharness.js-based test.
-Found 1609 tests; 1428 PASS, 181 FAIL, 0 TIMEOUT, 0 NOTRUN.
+Found 1609 tests; 1423 PASS, 186 FAIL, 0 TIMEOUT, 0 NOTRUN.
 PASS Event interface: existence and properties of interface object 
 PASS Event interface object length 
 PASS Event interface object name 
@@ -24,7 +24,7 @@
 PASS Event interface: operation preventDefault() 
 PASS Event interface: attribute defaultPrevented 
 PASS Event interface: attribute timeStamp 
-PASS Event interface: operation initEvent(DOMString,boolean,boolean) 
+FAIL Event interface: operation initEvent(DOMString,boolean,boolean) assert_equals: property has wrong .length expected 1 but got 0
 PASS Event must be primary interface of document.createEvent("Event") 
 PASS Stringification of document.createEvent("Event") 
 PASS Event interface: document.createEvent("Event") must inherit property "type" with the proper type (0) 
@@ -44,7 +44,9 @@
 PASS Event interface: document.createEvent("Event") must have own property "isTrusted" 
 PASS Event interface: document.createEvent("Event") must inherit property "timeStamp" with the proper type (15) 
 PASS Event interface: document.createEvent("Event") must inherit property "initEvent" with the proper type (16) 
-PASS Event interface: calling initEvent(DOMString,boolean,boolean) on document.createEvent("Event") with too few arguments must throw TypeError 
+FAIL Event interface: calling initEvent(DOMString,boolean,boolean) on document.createEvent("Event") with too few arguments must throw TypeError assert_throws: Called with 0 arguments function "function () {
+            fn.apply(obj, args);
+        }" did not throw
 PASS Event must be primary interface of new Event("foo") 
 PASS Stringification of new Event("foo") 
 PASS Event interface: new Event("foo") must inherit property "type" with the proper type (0) 
@@ -64,7 +66,9 @@
 PASS Event interface: new Event("foo") must have own property "isTrusted" 
 PASS Event interface: new Event("foo") must inherit property "timeStamp" with the proper type (15) 
 PASS Event interface: new Event("foo") must inherit property "initEvent" with the proper type (16) 
-PASS Event interface: calling initEvent(DOMString,boolean,boolean) on new Event("foo") with too few arguments must throw TypeError 
+FAIL Event interface: calling initEvent(DOMString,boolean,boolean) on new Event("foo") with too few arguments must throw TypeError assert_throws: Called with 0 arguments function "function () {
+            fn.apply(obj, args);
+        }" did not throw
 PASS CustomEvent interface: existence and properties of interface object 
 PASS CustomEvent interface object length 
 PASS CustomEvent interface object name 
@@ -94,7 +98,9 @@
 PASS Event interface: new CustomEvent("foo") must have own property "isTrusted" 
 PASS Event interface: new CustomEvent("foo") must inherit property "timeStamp" with the proper type (15) 
 PASS Event interface: new CustomEvent("foo") must inherit property "initEvent" with the proper type (16) 
-PASS Event interface: calling initEvent(DOMString,boolean,boolean) on new CustomEvent("foo") with too few arguments must throw TypeError 
+FAIL Event interface: calling initEvent(DOMString,boolean,boolean) on new CustomEvent("foo") with too few arguments must throw TypeError assert_throws: Called with 0 arguments function "function () {
+            fn.apply(obj, args);
+        }" did not throw
 PASS EventTarget interface: existence and properties of interface object 
 PASS EventTarget interface object length 
 PASS EventTarget interface object name