Allow root level requests in the vm service.

runtime/bin/vmservice/client/lib/src/observatory/location_manager.dart

 // 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.
 
 part of observatory;
 
 /// The LocationManager class observes and parses the hash ('#') portion of the
 /// URL in window.location. The text after the '#' is used as the request
 /// string for the VM service.
 class LocationManager extends Observable {
@@ skipping 92 matching lines @@
   String currentIsolateScriptLink(String scriptURL) {
     var encoded = Uri.encodeComponent(scriptURL);
     return currentIsolateRelativeLink('scripts/$encoded');
   }
 
   /// Create a request for [l] on [isolateId].
   @observable
   String relativeLink(String isolateId, String l) {
     return '#/$isolateId/$l';
   }
+
+  /// Create a request for [l] on [isolateId].
+  @observable
+  String absoluteLink(String l) {
+    return '#/$l';
+  }
 }