Revert of Have postMessage()s throw TypeError on failed arity checks.

LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt

Index: LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt
diff --git a/LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt b/LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt
index 260c48071ebff3d3e1fad39c5dd23a553309c9b1..1b0278826fdb97aa2646e19c174af1ae4bfa36e0 100644
--- a/LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt
+++ b/LayoutTests/fast/dom/Window/window-postmessage-args-expected.txt
@@ -1,36 +1,33 @@
 Test that the second argument of window.postMessage is ignored or triggers an error if it is not a message port. You should see PASS message '1' through '7', followed by 'done', with messages 4-7 received below.
 
-
-PASS Posting message ('1', 1): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 3rd argument is neither an array, nor does it have indexed properties.
-PASS Posting message ('2', c): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 2nd argument is neither an array, nor does it have indexed properties.
-PASS Posting message ('3', [object Object]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 3rd argument is neither an array, nor does it have indexed properties.
-PASS Posting message ('3a', *): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 2nd argument is neither an array, nor does it have indexed properties.
-PASS Posting message ('4', [object Window]) did not throw an exception
-PASS Posting message ('4a', *) did not throw an exception
-PASS Posting message ('5', null) did not throw an exception
-PASS Posting message ('6', undefined) did not throw an exception
-PASS Posting message ('7', [object MessagePort],[object MessagePort]) did not throw an exception
-PASS Posting message ('7a', *) did not throw an exception
-PASS Posting message ('7', [object MessagePort],[object MessagePort]) did not throw an exception
-PASS Posting message ('2147483648', null) did not throw an exception
-PASS Posting message ('[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
-PASS Posting message ('[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
-PASS Posting message ('[object MessagePort],[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
-PASS Posting message ('data', [object MessagePort],[object MessagePort]): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': Port at index 0 is already neutered.
-PASS Posting message ('[object MessagePort],[object MessagePort]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': A MessagePort could not be cloned.
-PASS Posting message ('[object ArrayBuffer]', [object ArrayBuffer]) did not throw an exception
-PASS arrayBuffer neutered
-PASS view neutered
-PASS Posting message ('[object ArrayBuffer]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': An ArrayBuffer is neutered and could not be cloned.
-PASS Posting message ('data', [object ArrayBuffer]): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': ArrayBuffer at index 0 is already neutered.
-PASS Posting message ('[object Int8Array]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': An ArrayBuffer is neutered and could not be cloned.
-PASS Posting message ('data', [object Int8Array]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 does not have a transferable type.
-PASS Posting message ('data', [object Object]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 is an untransferable 'undefined' value.
-PASS Posting message ('data', 1,,2): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 does not have a transferable type.
-PASS Posting message ('data', ,function () { [native code] }): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 is an untransferable 'null' value.
-PASS window.postMessage() threw exception TypeError: Failed to execute 'postMessage' on 'Window': 2 arguments required, but only 0 present..
-PASS window.postMessage('a') threw exception TypeError: Failed to execute 'postMessage' on 'Window': 2 arguments required, but only 1 present..
-PASS Posting message ('done', undefined) did not throw an exception
+PASS: Posting message ('1', 1): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 3rd argument is neither an array, nor does it have indexed properties.
+PASS: Posting message ('2', c): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 2nd argument is neither an array, nor does it have indexed properties.
+PASS: Posting message ('3', [object Object]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 3rd argument is neither an array, nor does it have indexed properties.
+PASS: Posting message ('3a', *): threw exception TypeError: Failed to execute 'postMessage' on 'Window': The 2nd argument is neither an array, nor does it have indexed properties.
+PASS: Posting message ('4', [object Window]) did not throw an exception
+PASS: Posting message ('4a', *) did not throw an exception
+PASS: Posting message ('5', null) did not throw an exception
+PASS: Posting message ('6', undefined) did not throw an exception
+PASS: Posting message ('7', [object MessagePort],[object MessagePort]) did not throw an exception
+PASS: Posting message ('7a', *) did not throw an exception
+PASS: Posting message ('7', [object MessagePort],[object MessagePort]) did not throw an exception
+PASS: Posting message ('2147483648', null) did not throw an exception
+PASS: Posting message ('[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
+PASS: Posting message ('[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
+PASS: Posting message ('[object MessagePort],[object MessagePort]', [object MessagePort],[object MessagePort]) did not throw an exception
+PASS: Posting message ('data', [object MessagePort],[object MessagePort]): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': Port at index 0 is already neutered.
+PASS: Posting message ('[object MessagePort],[object MessagePort]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': A MessagePort could not be cloned.
+PASS: Posting message ('[object ArrayBuffer]', [object ArrayBuffer]) did not throw an exception
+PASS: arrayBuffer neutered
+PASS: view neutered
+PASS: Posting message ('[object ArrayBuffer]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': An ArrayBuffer is neutered and could not be cloned.
+PASS: Posting message ('data', [object ArrayBuffer]): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': ArrayBuffer at index 0 is already neutered.
+PASS: Posting message ('[object Int8Array]', ): threw exception DataCloneError: Failed to execute 'postMessage' on 'Window': An ArrayBuffer is neutered and could not be cloned.
+PASS: Posting message ('data', [object Int8Array]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 does not have a transferable type.
+PASS: Posting message ('data', [object Object]): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 is an untransferable 'undefined' value.
+PASS: Posting message ('data', 1,,2): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 does not have a transferable type.
+PASS: Posting message ('data', ,function () { [native code] }): threw exception TypeError: Failed to execute 'postMessage' on 'Window': Value at index 0 is an untransferable 'null' value.
+PASS: Posting message ('done', undefined) did not throw an exception
 Received message '4' with 0 ports.
 Received message '4a' with 0 ports.
 Received message '5' with 0 ports.
@@ -44,7 +41,4 @@
 Received message '[object MessagePort],[object MessagePort]' with 2 ports.
 Received message '[object ArrayBuffer]' with 0 ports.
 Received message 'done' with 0 ports.
-PASS successfullyParsed is true
 
-TEST COMPLETE
-