VM: [Kernel] Revert changes to the native ports that introduced peers.

runtime/vm/native_api_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_message.h"
 #include "vm/dart_api_state.h"
@@ skipping 64 matching lines @@
   }
   Dart_CObject cobj;
   cobj.type = Dart_CObject_kInt64;
   cobj.value.as_int64 = message;
   return PostCObjectHelper(port_id, &cobj);
 }
 
 
 DART_EXPORT Dart_Port Dart_NewNativePort(const char* name,
                                          Dart_NativeMessageHandler handler,
-                                         bool handle_concurrently,
-                                         void* peer) {
+                                         bool handle_concurrently) {
   if (name == NULL) {
     name = "<UnnamedNativePort>";
   }
   if (handler == NULL) {
     OS::PrintErr("%s expects argument 'handler' to be non-null.\n",
                  CURRENT_FUNC);
     return ILLEGAL_PORT;
   }
   // Start the native port without a current isolate.
   IsolateSaver saver(Isolate::Current());
 
-  NativeMessageHandler* nmh = new NativeMessageHandler(name, handler, peer);
+  NativeMessageHandler* nmh = new NativeMessageHandler(name, handler);
   Dart_Port port_id = PortMap::CreatePort(nmh);
   PortMap::SetPortState(port_id, PortMap::kLivePort);
   nmh->Run(Dart::thread_pool(), NULL, NULL, 0);
   return port_id;
 }
 
 
 DART_EXPORT bool Dart_CloseNativePort(Dart_Port native_port_id) {
   // Close the native port without a current isolate.
   IsolateSaver saver(Isolate::Current());
@@ skipping 44 matching lines @@
   Dart_Handle result = Api::CheckAndFinalizePendingClasses(T);
   if (::Dart_IsError(result)) {
     return result;
   }
   CHECK_CALLBACK_STATE(T);
   ParseAll(T, &result);
   return result;
 }
 
 }  // namespace dart