Revert "Hide Isolate pointer from embedder"

runtime/bin/dartutils.cc

 // Copyright (c) 2012, 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 "bin/dartutils.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
@@ skipping 464 matching lines @@
   bool bytes_written = file->WriteFully(magic_number, sizeof(magic_number));
   ASSERT(bytes_written);
 }
 
 
 Dart_Handle DartUtils::LoadScript(const char* script_uri,
                                   Dart_Handle builtin_lib) {
   Dart_Handle uri = Dart_NewStringFromCString(script_uri);
 
   Dart_Port load_port = Dart_ServiceWaitForLoadPort();
-  if (load_port == DART_ILLEGAL_PORT) {
+  if (load_port == ILLEGAL_PORT) {
     return NewDartUnsupportedError("Service did not return load port.");
   }
   Builtin::SetLoadPort(load_port);
 
   return LoadDataAsync_Invoke(Dart_Null(), uri, Dart_Null(), builtin_lib);
 }
 
 
 // Callback function, gets called from asynchronous script and library
 // reading code when there is an i/o error.
@@ skipping 709 matching lines @@
       new CObjectString(CObject::NewString(os_error->message()));
   CObjectArray* result = new CObjectArray(CObject::NewArray(3));
   result->SetAt(0, new CObjectInt32(CObject::NewInt32(kOSError)));
   result->SetAt(1, new CObjectInt32(CObject::NewInt32(os_error->code())));
   result->SetAt(2, error_message);
   return result;
 }
 
 }  // namespace bin
 }  // namespace dart