Added support for "bin-ified" vmstats web app source files

runtime/bin/vmstats_sources.gypi

Index: runtime/bin/vmstats_sources.gypi
===================================================================
--- runtime/bin/vmstats_sources.gypi	(revision 0)
+++ runtime/bin/vmstats_sources.gypi	(revision 0)
@@ -0,0 +1,17 @@
+# 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.
+
+# This file contains all sources for the vmstats application.
+{
+  'sources': [
+    'vmstats/bargraph.dart',
+    'vmstats/favicon.ico',
+    'vmstats/isolate_list.dart',
+    'vmstats/models.dart',
+    'vmstats/packages/browser/dart.js',
+    'vmstats/vmstats.css',
+    'vmstats/vmstats.dart',
+    'vmstats/vmstats.html',
+  ],
+}