Revert "Build Observatory with runtime"

runtime/observatory/lib/src/elements/script_ref.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.
-
-library script_ref_element;
-
-import 'package:polymer/polymer.dart';
-import 'package:observatory/service.dart';
-import 'service_ref.dart';
-
-@CustomTag('script-ref')
-class ScriptRefElement extends ServiceRefElement {
-  @published int pos = -1;
-
-  String get hoverText {
-    if (ref == null) {
-      return super.hoverText;
-    }
-    return ref.vmName;
-  }
-
-  void posChanged(oldValue) {
-    _updateProperties(null);
-  }
-
-  void _updateProperties(_) {
-    if (ref != null && ref.loaded) {
-      notifyPropertyChange(#name, 0, 1);
-      notifyPropertyChange(#url, 0, 1);
-    }
-  }
-
-  String get name {
-    if (ref == null) {
-      return super.name;
-    }
-    if (pos >= 0) {
-      if (ref.loaded) {
-        // Script is loaded, get the line number.
-        Script script = ref;
-        return '${super.name}:${script.tokenToLine(pos)}';
-      } else {
-        ref.load().then(_updateProperties);
-      }
-    }
-    return super.name;
-  }
-
-  String get url {
-    if (ref == null) {
-      return super.url;
-    }
-    if (pos >= 0) {
-      if (ref.loaded) {
-        // Script is loaded, get the line number.
-        Script script = ref;
-        return '${super.url}---pos=${pos}';
-      } else {
-        ref.load().then(_updateProperties);
-      }
-    }
-    return super.url;
-  }
-
-  ScriptRefElement.created() : super.created();
-}