Remove the reply port form the native isolate handler

runtime/bin/dartutils.h

Index: runtime/bin/dartutils.h
diff --git a/runtime/bin/dartutils.h b/runtime/bin/dartutils.h
index ca8fa060e57d6cd299b5b1a270fc7e76bff850e8..7f61cfa9a763969027bb3c867716fe305075ef78 100644
--- a/runtime/bin/dartutils.h
+++ b/runtime/bin/dartutils.h
@@ -251,6 +251,7 @@ class CObject {
     return type() == Dart_CObject_kTypedData &&
            byte_array_type() == Dart_TypedData_kUint8;
   }
+  bool IsSendPort() { return type() == Dart_CObject_kSendPort; }
 
   bool IsTrue() {
     return type() == Dart_CObject_kBool && cobject_->value.as_bool;
@@ -468,6 +469,17 @@ class CObjectArray : public CObject {
 };
 
 
+class CObjectSendPort : public CObject {
+ public:
+  DECLARE_COBJECT_CONSTRUCTORS(SendPort)
+
+  Dart_Port Value() const { return cobject_->value.as_send_port; }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CObjectSendPort);
+};
+
+
 class CObjectTypedData : public CObject {
  public:
   explicit CObjectTypedData(Dart_CObject *cobject) : CObject(cobject) {