Fix decoration of ObjectPool references to stubs broken by their movement to VM isolate.

runtime/vm/service.cc

Index: runtime/vm/service.cc
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index de3f48d391d19764e521a7bacc6b9e1edca8588a..8b8ff42c92a09618cceb8d1abda4f5ad53699c54 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -2594,11 +2594,24 @@ static bool GetObjectByAddress(Isolate* isolate, JSONStream* js) {
     ContainsAddressVisitor visitor(isolate, addr);
     object = isolate->heap()->FindObject(&visitor);
   }
-  if (object.IsNull()) {
-    PrintSentinel(js, kFreeSentinel);
-  } else {
+
+  if (!object.IsNull()) {
+    object.PrintJSON(js, ref);
+    return true;
+  }
+
+  {
+    NoSafepointScope no_safepoint;
+    ContainsAddressVisitor visitor(Dart::vm_isolate(), addr);
+    object = Dart::vm_isolate()->heap()->FindObject(&visitor);

[Cutch, 2015/07/23 23:59:25]

Maybe refactor the FindObject calls into a helper:

Object& object = FindObjectHelper(addr);

Which checks both the current and vm isolates for the address.

[rmacnak, 2015/07/24 00:17:45]

Done.

+  }
+
+  if (!object.IsNull()) {
     object.PrintJSON(js, ref);
+    return true;
   }
+
+  PrintSentinel(js, kFreeSentinel);
   return true;
 }