Fix Observatory code coverage

runtime/bin/vmservice/client/lib/src/app/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 app;
 
 abstract class LocationManager extends Observable {
   final _initialPath = '/vm';
   ObservatoryApplication _app;
 
@@ skipping 24 matching lines @@
   void _go(String url) {
     // Chop off leading '#'.
     if (url.startsWith('#')) {
       url = url.substring(1);
     }
     // Fall through handles '#/'
     // Chop off leading '/'.
     if (url.startsWith('/')) {
       url = url.substring(1);
     }
-    _app._visit(url);
+    var args;
+    // Parse out arguments.
+    if (url.contains('#')) {
+      var chunks = url.split('#');
+      url = chunks[0];
+      if ((chunks.length > 1) && (chunks[1] != '')) {
+        args = chunks[1];
+      }
+    }
+    _app._visit(url, args);
   }
 
   /// Go back.
   void back() {
     window.history.go(-1);
   }
 
   /// Go forward.
   void forward() {
     window.history.go(1);
@@ skipping 52 matching lines @@
     _go(window.location.pathname);
   }
 
   void _onLocationChange(PopStateEvent _) {
     _go(window.location.pathname);
   }
 
   /// Given an application url, generate a link for an anchor tag.
   String makeLink(String url) => url;
 }