Remove signature classes from the VM.

runtime/observatory/tests/service/graph_test.dart

Index: runtime/observatory/tests/service/graph_test.dart
diff --git a/runtime/observatory/tests/service/graph_test.dart b/runtime/observatory/tests/service/graph_test.dart
index 3cf8c469d0d61c230dbac11144cb96089cb3ce3e..fab9d685358f3ba508f891edd28d253e26c21df9 100644
--- a/runtime/observatory/tests/service/graph_test.dart
+++ b/runtime/observatory/tests/service/graph_test.dart
@@ -71,7 +71,7 @@ var tests = [
                                       bVertex.shallowSize +
                                       rVertex.shallowSize));
 
-  const int fixedSizeListCid = 62;
+  const int fixedSizeListCid = 64;  // TODO(rmacnak): Compute from kArrayCid.

[rmacnak, 2016/01/19 19:27:11]

Library corelib = isolate.libraries.singleWhere((lib) => lib.uri ==
'dart:core');
await corelib.load();
Class _List = corelib.classes.singleWhere((cls) =>
cls.vmName.startsWith('_List'));
int kArrayCid = _List.vmCid;
// startsWith to ignore the private mangling

[regis, 2016/01/19 23:15:29]

Done. Thanks!

   List<ObjectVertex> lists = new List.from(graph.vertices.where(
       (ObjectVertex obj) => obj.vmCid == fixedSizeListCid));
   expect(lists.length >= 2, isTrue);