Allow for embedder provided service request handlers

runtime/vm/dart_api_impl.cc

 // 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.
 
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
@@ skipping 4537 matching lines @@
   return Api::Success();
 }
 
 
 // --- Service support ---
 
 DART_EXPORT Dart_Isolate Dart_GetServiceIsolate(void* callback_data) {
   return Api::CastIsolate(Service::GetServiceIsolate(callback_data));
 }
 
+
+DART_EXPORT bool Dart_IsServiceRunning() {
+  return Service::IsRunning();
+}
+
+
+DART_EXPORT void Dart_RegisterIsolateServiceRequestCallback(
+    const char* name,
+    Dart_ServiceRequestCallback callback,
+    void* user_data) {
+  Service::RegisterIsolateEmbedderCallback(name, callback, user_data);
+}
+
+
+DART_EXPORT void Dart_RegisterRootServiceRequestCallback(
+    const char* name,
+    Dart_ServiceRequestCallback callback,
+    void* user_data) {
+  Service::RegisterRootEmbedderCallback(name, callback, user_data);
+}
+
 }  // namespace dart