Set up _enqueueImmediate hook in Dartium.

Source/bindings/dart/DartController.cpp

 // Copyright (c) 2009, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 159 matching lines @@
     Dart_Handle typedData = Dart_LookupLibrary(Dart_NewStringFromCString("dart:typed_data"));
     ASSERT(!Dart_IsError(typedData));
     domData->setTypedDataLibrary(Dart_NewPersistentHandle(typedData));
 
     // Setup configuration closures
     const char * const printClosure = getenv("DART_FORWARDING_PRINT") ?
         "_forwardingPrintClosure" :
         (isDOMEnabled ?  "_printClosure" : "_pureIsolatePrintClosure");
     copyValue(html, printClosure, "dart:_collection-dev", 0, "_printClosure");
     copyValue(html, isDOMEnabled ? "_timerFactoryClosure" : "_pureIsolateTimerFactoryClosure", "dart:async", "_TimerFactory", "_factory");
+    copyValue(html, isDOMEnabled ? "_scheduleImmediateClosure" : "_pureIsolateScheduleImmediateClosure", "dart:async", "_ScheduleImmediate", "_closure");
 
     if (isDOMEnabled) {
         // Create strongly reachable document wrapper. Document wrapper acts as a
         // retainer for in-document node wrappers group. There is no need to destroy
         // this persistent handle explicitly because we will shutdown the isolate on
         // navigation.
         Dart_Handle localHandle = DartDocument::toDart(document);
         Dart_PersistentHandle strongHandle = Dart_NewPersistentHandle(localHandle);
         // We need a weak handle to always reachable object to temporary render
         // so weak handles strong, see the corresponding logic in
@@ skipping 737 matching lines @@
             libraryIdMap->set(libraryId, scriptState);
         } else {
             scriptState = libraryIter->value;
             ASSERT(scriptState);
         }
         result.append(scriptState);
     }
 }
 
 }