Always use isolate creation callback passed to Dart_Initialize for service isolate startup

runtime/vm/service.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 VM_SERVICE_H_
 #define VM_SERVICE_H_
 
 #include "include/dart_api.h"
 
 #include "vm/allocation.h"
 #include "vm/os_thread.h"
 
 namespace dart {
 
 class Array;
 class DebuggerEvent;
 class EmbedderServiceHandler;
 class GCEvent;
 class Instance;
 class Isolate;
 class JSONStream;
 class Object;
 class RawInstance;
 class String;
 
 class Service : public AllStatic {
  public:
-  static const char* kServiceIsolateName;
+  static const char* kIsolateName;
   static bool IsServiceIsolateName(const char* name);
 
   // Handles a message which is not directed to an isolate.
   static void HandleRootMessage(const Instance& message);
 
   // Handles a message which is directed to a particular isolate.
   static void HandleIsolateMessage(Isolate* isolate, const Array& message);
 
   static Isolate* GetServiceIsolate(void* callback_data);
   static bool SendIsolateStartupMessage();
@@ skipping 35 matching lines @@
 
   static void SendEchoEvent(Isolate* isolate);
   static void SendGraphEvent(Isolate* isolate);
 
   static void MaybeInjectVMServiceLibrary(Isolate* isolate);
 
   static void RunService();
 
   static void FinishedInitializing();
 
+  static Dart_IsolateCreateCallback create_callback() {
+    return create_callback_;
+  }
+
  private:
   // These must be kept in sync with service/constants.dart
   static const int kEventFamilyDebug = 0;
   static const int kEventFamilyGC = 1;
   static const uint32_t kEventFamilyDebugMask = (1 << kEventFamilyDebug);
   static const uint32_t kEventFamilyGCMask = (1 << kEventFamilyGC);
 
   static void EmbedderHandleMessage(EmbedderServiceHandler* handler,
                                     JSONStream* js);
 
   static EmbedderServiceHandler* FindIsolateEmbedderHandler(const char* name);
   static EmbedderServiceHandler* FindRootEmbedderHandler(const char* name);
   static Dart_Handle GetSource(const char* name);
   static Dart_Handle LibraryTagHandler(Dart_LibraryTag tag, Dart_Handle library,
                                        Dart_Handle url);
 
   static void SendEvent(intptr_t eventId, const Object& eventMessage);
   // Does not take ownership of 'data'.
   static void SendEvent(intptr_t eventId,
                         const String& meta,
                         const uint8_t* data,
                         intptr_t size);
 
   static EmbedderServiceHandler* isolate_service_handler_head_;
   static EmbedderServiceHandler* root_service_handler_head_;
 
 
+  static Dart_IsolateCreateCallback create_callback_;
   static Monitor* monitor_;
   static bool initializing_;
   static Isolate* service_isolate_;
   static Dart_Port service_port_;
   static Dart_Port load_port_;
   static uint32_t event_mask_;
 };
 
 }  // namespace dart
 
 #endif  // VM_SERVICE_H_