Include 'fixedId' key when printing service ids

runtime/vm/isolate.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 "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "vm/code_observers.h"
@@ skipping 1473 matching lines @@
 void Isolate::VisitPrologueWeakPersistentHandles(HandleVisitor* visitor) {
   if (api_state() != NULL) {
     api_state()->VisitPrologueWeakHandles(visitor);
   }
 }
 
 
 void Isolate::PrintJSON(JSONStream* stream, bool ref) {
   JSONObject jsobj(stream);
   jsobj.AddProperty("type", (ref ? "@Isolate" : "Isolate"));
-  jsobj.AddPropertyF("id", "isolates/%" Pd "",
-                     static_cast<intptr_t>(main_port()));
+  jsobj.AddFixedServiceId("isolates/%" Pd "",
+                          static_cast<intptr_t>(main_port()));
 
   jsobj.AddProperty("name", debugger_name());
   jsobj.AddPropertyF("number", "%" Pd "",
                      static_cast<intptr_t>(main_port()));
   if (ref) {
     return;
   }
   int64_t start_time_millis = start_time() / kMicrosecondsPerMillisecond;
   jsobj.AddProperty64("startTime", start_time_millis);
   IsolateSpawnState* state = spawn_state();
@@ skipping 451 matching lines @@
                            serialized_message_, serialized_message_len_);
 }
 
 
 void IsolateSpawnState::Cleanup() {
   SwitchIsolateScope switch_scope(I);
   Dart::ShutdownIsolate();
 }
 
 }  // namespace dart