Fix http://dartbug.com/23578:

runtime/vm/service.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/service.h"
 
 #include "include/dart_api.h"
 #include "platform/globals.h"
 
 #include "vm/compiler.h"
@@ skipping 2587 matching lines @@
   JSONObject jsobj(js);
   jsobj.AddProperty("type", "VM");
   jsobj.AddProperty("architectureBits", static_cast<intptr_t>(kBitsPerWord));
   jsobj.AddProperty("targetCPU", CPU::Id());
   jsobj.AddProperty("hostCPU", HostCPUFeatures::hardware());
   jsobj.AddProperty("version", Version::String());
   // Send pid as a string because it allows us to avoid any issues with
   // pids > 53-bits (when consumed by JavaScript).
   // TODO(johnmccutchan): Codify how integers are sent across the service.
   jsobj.AddPropertyF("pid", "%" Pd "", OS::ProcessId());
-  jsobj.AddProperty("_assertsEnabled", isolate->AssertsEnabled());
-  jsobj.AddProperty("_typeChecksEnabled", isolate->TypeChecksEnabled());
+  jsobj.AddProperty("_assertsEnabled", isolate->flags().asserts());
+  jsobj.AddProperty("_typeChecksEnabled", isolate->flags().type_checks());
   int64_t start_time_millis = (Dart::vm_isolate()->start_time() /
                                kMicrosecondsPerMillisecond);
   jsobj.AddProperty64("startTime", start_time_millis);
   // Construct the isolate list.
   {
     JSONArray jsarr(&jsobj, "isolates");
     ServiceIsolateVisitor visitor(&jsarr);
     Isolate::VisitIsolates(&visitor);
   }
   return true;
@@ skipping 178 matching lines @@
     ServiceMethodDescriptor& method = service_methods_[i];
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 
 }  // namespace dart