Add <eval-link> - a custom element for evaluating an expression.

runtime/bin/resources_sources.gypi

 # Copyright (c) 2014, 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 Resources table.
 {
   'sources': [
 # Standalone VM service sources.
     'vmservice/resources.dart',
     'vmservice/server.dart',
@@ skipping 29 matching lines @@
     'vmservice/client/deployed/web/packages/observatory/elements.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/breakpoint_list.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/class_ref.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/class_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/code_ref.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/code_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/collapsible_content.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/curly_block.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/error_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/eval_box.html',
+    'vmservice/client/deployed/web/packages/observatory/src/elements/eval_link.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/field_ref.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/field_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/function_ref.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/function_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/heap_map.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/heap_profile.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/img/isolate_icon.png',
     'vmservice/client/deployed/web/packages/observatory/src/elements/instance_ref.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/instance_view.html',
     'vmservice/client/deployed/web/packages/observatory/src/elements/isolate_profile.html',
@@ skipping 21 matching lines @@
     'vmservice/client/deployed/web/packages/observatory/src/elements/vm_view.html',
     'vmservice/client/deployed/web/packages/polymer/boot.js',
     'vmservice/client/deployed/web/packages/shadow_dom/shadow_dom.debug.js',
     'vmservice/client/deployed/web/packages/shadow_dom/shadow_dom.min.js',
     'vmservice/client/deployed/web/packages/shadow_dom/src/platform/patches-shadowdom-polyfill-before.js',
     'vmservice/client/deployed/web/packages/shadow_dom/src/platform/patches-shadowdom-polyfill.js',
     'vmservice/client/deployed/web/packages/shadow_dom/src/platform/platform-init.js',
   ],
 }