Implement automatic loading of dart:core_native_fields library

vm/object.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/dart.h"
 #include "vm/globals.h"
@@ skipping 1534 matching lines @@
   }
 
   void Register() const;
   static RawLibrary* LookupLibrary(const String& url);
   static RawString* CheckForDuplicateDefinition();
   static bool IsKeyUsed(intptr_t key);
 
   static void InitCoreLibrary(Isolate* isolate);
   static RawLibrary* CoreLibrary();
   static RawLibrary* CoreImplLibrary();
+  static void InitNativeFieldsLibrary(Isolate* isolate);
+  static RawLibrary* NativeFieldsLibrary();
 
   // Eagerly compile all classes and functions in the library.
   static void CompileAll();
 
  private:
   static const int kInitialImportsCapacity = 4;
   static const int kImportsCapacityIncrement = 8;
   static const int kInitialImportedIntoCapacity = 1;
   static const int kImportedIntoCapacityIncrement = 2;
   static RawLibrary* New();
@@ skipping 1435 matching lines @@
 }
 
 
 void Context::SetAt(intptr_t index, const Instance& value) const {
   StorePointer(InstanceAddr(index), value.raw());
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_