More informative error messages for non-Transferables.

Source/bindings/v8/custom/V8MessagePortCustom.cpp

Index: Source/bindings/v8/custom/V8MessagePortCustom.cpp
diff --git a/Source/bindings/v8/custom/V8MessagePortCustom.cpp b/Source/bindings/v8/custom/V8MessagePortCustom.cpp
index cedf23f3274ff44d92382051c786a3a1ce722334..551df9c3215bd854fe7c9c24b45e14e16bf4a988 100644
--- a/Source/bindings/v8/custom/V8MessagePortCustom.cpp
+++ b/Source/bindings/v8/custom/V8MessagePortCustom.cpp
@@ -31,6 +31,7 @@
 #include "config.h"
 #include "V8MessagePort.h"
 
+#include "bindings/v8/ExceptionMessages.h"
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/SerializedScriptValue.h"
 #include "bindings/v8/V8Binding.h"
@@ -46,8 +47,15 @@ void V8MessagePort::postMessageMethodCustom(const v8::FunctionCallbackInfo<v8::V
     MessagePortArray portArray;
     ArrayBufferArray arrayBufferArray;
     if (args.Length() > 1) {
-        if (!extractTransferables(args[1], portArray, arrayBufferArray, args.GetIsolate()))
+        bool notASequence = false;
+        if (!extractTransferables(
+            args[1], portArray, arrayBufferArray, notASequence, args.GetIsolate())) {

[Mike West, 2013/10/22 06:50:40]

Nit: line breaks.

+            if (notASequence) {
+                throwTypeError(ExceptionMessages::failedToExecute(

[Mike West, 2013/10/22 06:50:40]

Nit: line breaks.

+                    "postMessage", "MessagePort", ExceptionMessages::notASequenceType("Second")), args.GetIsolate());
+            }
             return;
+        }
     }
     bool didThrow = false;
     RefPtr<SerializedScriptValue> message =