Improved how closures are displayed by <instance-ref>.

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 "vm/compiler.h"
 #include "vm/coverage.h"
@@ skipping 813 matching lines @@
 
 static bool HandleObjects(Isolate* isolate, JSONStream* js) {
   REQUIRE_COLLECTION_ID("objects");
   ASSERT(js->num_arguments() >= 2);
   const char* arg = js->GetArgument(1);
 
   // TODO(turnidge): Handle <optimized out> the same way as other
   // special nulls.
   if (strcmp(arg, "null") == 0 ||
       strcmp(arg, "not-initialized") == 0 ||
-      strcmp(arg, "being-initialized") == 0) {
+      strcmp(arg, "being-initialized") == 0 ||
+      strcmp(arg, "optimized-out") == 0) {
     Object::null_object().PrintToJSONStream(js, false);
     return true;
 
   } else if (strcmp(arg, "int") == 0) {
     if (js->num_arguments() < 3) {
       PrintError(js, "expected 3 arguments but found %" Pd "\n",
                  js->num_arguments());
       return true;
     }
     int64_t value = 0;
@@ skipping 305 matching lines @@
       return entry.handler;
     }
   }
   if (FLAG_trace_service) {
     OS::Print("Service has no root message handler for <%s>\n", command);
   }
   return NULL;
 }
 
 }  // namespace dart