Throw TypeError if value conversion to transferable fails.

LayoutTests/fast/events/resources/message-port-multi.js

Index: LayoutTests/fast/events/resources/message-port-multi.js
diff --git a/LayoutTests/fast/events/resources/message-port-multi.js b/LayoutTests/fast/events/resources/message-port-multi.js
index 1cdaf6cb31c89f2cf5c6144d8eac8bc80d3a6fc0..6ae5176299ad6bd832abf111f03bdaf3fa2b4977 100644
--- a/LayoutTests/fast/events/resources/message-port-multi.js
+++ b/LayoutTests/fast/events/resources/message-port-multi.js
@@ -16,14 +16,14 @@ channel.port1.postMessage("two ports", [channel2.port1, channel2.port2]);
 
 // Now test various failure cases
 shouldThrow('channel.port1.postMessage("same port", [channel.port1])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Port at index 0 contains the source port."');
-shouldThrow('channel.port1.postMessage("null port", [channel3.port1, null, channel3.port2])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 is an untransferable \'null\' value."');
-shouldThrow('channel.port1.postMessage("notAPort", [channel3.port1, {}, channel3.port2])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 does not have a transferable type."');
+shouldThrow('channel.port1.postMessage("null port", [channel3.port1, null, channel3.port2])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 is an untransferable \'null\' value."');
+shouldThrow('channel.port1.postMessage("notAPort", [channel3.port1, {}, channel3.port2])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 1 does not have a transferable type."');
 shouldThrow('channel.port1.postMessage("duplicate port", [channel3.port1, channel3.port1])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Message port at index 1 is a duplicate of an earlier port."');
 // Should be OK to send channel3.port1 (should not have been disentangled by the previous failed calls).
 channel.port1.postMessage("entangled ports", [channel3.port1, channel3.port2]);
 
 shouldThrow('channel.port1.postMessage("notAnArray", channel3.port1)', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': The 2nd argument is neither an array, nor does it have indexed properties."');
-shouldThrow('channel.port1.postMessage("notASequence", [{length: 3}])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 does not have a transferable type."');
+shouldThrow('channel.port1.postMessage("notASequence", [{length: 3}])', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 does not have a transferable type."');
 var arrayBuffer = new ArrayBuffer(2);
 shouldThrow('channel.port1.postMessage("duplicate buffer", [arrayBuffer, arrayBuffer])', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': ArrayBuffer at index 1 is a duplicate of an earlier ArrayBuffer."');
 
@@ -31,7 +31,7 @@ shouldThrow('channel.port1.postMessage("duplicate buffer", [arrayBuffer, arrayBu
 // entries).
 var largePortArray = [];
 largePortArray[1234567890] = channel4.port1;
-shouldThrow('channel.port1.postMessage("largeSequence", largePortArray)', '"DataCloneError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 is an untransferable \'undefined\' value."');
+shouldThrow('channel.port1.postMessage("largeSequence", largePortArray)', '"TypeError: Failed to execute \'postMessage\' on \'MessagePort\': Value at index 0 is an untransferable \'undefined\' value."');
 
 channel.port1.postMessage("done");
 
@@ -145,4 +145,3 @@ channel.port2.onmessage = function(event) {
     } else
         testFailed("Received unexpected message: " + event.data);
 }
-