Cleanup vm_service library loading.

runtime/bin/vmservice_impl.h

 // 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.
 
 #ifndef BIN_VMSERVICE_IMPL_H_
 #define BIN_VMSERVICE_IMPL_H_
 
 #include "bin/vmservice.h"
 #include "platform/thread.h"
 
@@ skipping 13 matching lines @@
   static bool IsRunning();
 
   static bool SendIsolateStartupMessage(Dart_Port port);
   static bool SendIsolateShutdownMessage(Dart_Port port);
 
   static void VmServiceShutdownCallback(void* callback_data);
 
  private:
   static bool _Start(intptr_t server_port);
   static void _Stop();
+  static Dart_Handle GetSource(const char* name);
   static Dart_Handle LoadScript(const char* name);
   static Dart_Handle LoadSources(Dart_Handle library, const char** names);
   static Dart_Handle LoadSource(Dart_Handle library, const char* name);
   static Dart_Handle LoadResources(Dart_Handle library);
   static Dart_Handle LoadResource(Dart_Handle library, const char* name,
                                   const char* prefix);
 
+  static Dart_Handle LibraryTagHandler(Dart_LibraryTag tag, Dart_Handle library,
+                                       Dart_Handle url);
+
   static void ThreadMain(uword parameters);
 
   static Dart_Isolate isolate_;
   static Dart_Port port_;
   static const char* error_msg_;
   static dart::Monitor* monitor_;
 
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(VmService);
 };
 
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_VMSERVICE_IMPL_H_