Support MessageEventInit.ports sequences.

Source/bindings/v8/V8Utilities.cpp

Index: Source/bindings/v8/V8Utilities.cpp
diff --git a/Source/bindings/v8/V8Utilities.cpp b/Source/bindings/v8/V8Utilities.cpp
index a2dc1548c3c9dd7ee9c6b173d1d346fa20332c41..7078d9a00ea3bef273cf66e3efe06138d3c762e5 100644
--- a/Source/bindings/v8/V8Utilities.cpp
+++ b/Source/bindings/v8/V8Utilities.cpp
@@ -121,10 +121,6 @@ bool getMessagePortArray(v8::Local<v8::Value> value, const String& propertyName,
         ports.resize(0);
         return true;
     }
-    if (!value->IsArray()) {
-        throwTypeError(ExceptionMessages::notASequenceTypeProperty(propertyName), isolate);
-        return false;
-    }
     bool success = false;
     ports = toRefPtrNativeArray<MessagePort, V8MessagePort>(value, propertyName, isolate, &success);
     return success;
@@ -136,10 +132,6 @@ bool getMessagePortArray(v8::Local<v8::Value> value, int argumentIndex, MessageP
         ports.resize(0);
         return true;
     }
-    if (!value->IsArray()) {
-        throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(argumentIndex), isolate);
-        return false;
-    }
     bool success = false;
     ports = toRefPtrNativeArray<MessagePort, V8MessagePort>(value, argumentIndex, isolate, &success);
     return success;