Refactor VM service IDs

runtime/bin/vmservice/client/lib/src/observatory_elements/code_ref.dart

Index: runtime/bin/vmservice/client/lib/src/observatory_elements/code_ref.dart
diff --git a/pkg/polymer/example/canonicalization/lib/a.dart b/runtime/bin/vmservice/client/lib/src/observatory_elements/code_ref.dart
similarity index 60%
copy from pkg/polymer/example/canonicalization/lib/a.dart
copy to runtime/bin/vmservice/client/lib/src/observatory_elements/code_ref.dart
index 78426db67214373e8e60ef08a3cc33cf5cc762b4..47103d3a3443bdda67623817ffa44fadd1a77541 100644
--- a/pkg/polymer/example/canonicalization/lib/a.dart
+++ b/runtime/bin/vmservice/client/lib/src/observatory_elements/code_ref.dart
@@ -2,15 +2,12 @@
 // 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.
 
-library canonicalization.a;
+library code_ref_element;
 
 import 'package:polymer/polymer.dart';
-import 'package:canonicalization/c.dart';
-import 'd.dart';
+import 'service_ref.dart';
 
-int a = 0;
-@initMethod _init() {
-  a++;
-  c++;
-  d++;
+@CustomTag('code-ref')
+class CodeRefElement extends ServiceRefElement {
+  CodeRefElement.created() : super.created();
 }