Introduced support for external services registration in the ServiceProtocol

runtime/observatory/observatory_sources.gypi

 # Copyright (c) 2017, 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 dart, css, and html sources for Observatory.
 {
   'sources': [
     'lib/allocation_profile.dart',
     'lib/app.dart',
     'lib/cli.dart',
@@ skipping 87 matching lines @@
     'lib/src/elements/metrics.dart',
     'lib/src/elements/native_memory_profiler.dart',
     'lib/src/elements/nav/class_menu.dart',
     'lib/src/elements/nav/isolate_menu.dart',
     'lib/src/elements/nav/library_menu.dart',
     'lib/src/elements/nav/menu_item.dart',
     'lib/src/elements/nav/notify.dart',
     'lib/src/elements/nav/notify_event.dart',
     'lib/src/elements/nav/notify_exception.dart',
     'lib/src/elements/nav/refresh.dart',
+    'lib/src/elements/nav/reload.dart',
     'lib/src/elements/nav/top_menu.dart',
     'lib/src/elements/nav/vm_menu.dart',
     'lib/src/elements/object_common.dart',
     'lib/src/elements/object_view.dart',
     'lib/src/elements/objectpool_ref.dart',
     'lib/src/elements/objectpool_view.dart',
     'lib/src/elements/objectstore_view.dart',
     'lib/src/elements/observatory_application.dart',
     'lib/src/elements/pc_descriptors_ref.dart',
     'lib/src/elements/persistent_handles.dart',
@@ skipping 54 matching lines @@
     'lib/src/models/objects/object.dart',
     'lib/src/models/objects/objectpool.dart',
     'lib/src/models/objects/objectstore.dart',
     'lib/src/models/objects/pc_descriptors.dart',
     'lib/src/models/objects/persistent_handles.dart',
     'lib/src/models/objects/ports.dart',
     'lib/src/models/objects/retaining_path.dart',
     'lib/src/models/objects/sample_profile.dart',
     'lib/src/models/objects/script.dart',
     'lib/src/models/objects/sentinel.dart',
+    'lib/src/models/objects/service.dart',
     'lib/src/models/objects/single_target_cache.dart',
     'lib/src/models/objects/source_location.dart',
     'lib/src/models/objects/subtype_test_cache.dart',
     'lib/src/models/objects/target.dart',
     'lib/src/models/objects/thread.dart',
     'lib/src/models/objects/timeline_event.dart',
     'lib/src/models/objects/token_stream.dart',
     'lib/src/models/objects/type_arguments.dart',
     'lib/src/models/objects/unknown.dart',
     'lib/src/models/objects/unlinked_call.dart',
@@ skipping 77 matching lines @@
     'lib/utils.dart',
     'web/favicon.ico',
     'web/index.html',
     'web/main.dart',
     'web/third_party/trace_viewer_full.html',
     'web/timeline.html',
     'web/timeline.js',
     'web/timeline_message_handler.js',
   ]
 }