Revert "Build Observatory with runtime"

runtime/observatory/lib/src/elements/code_view.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 code_view_element;
-
-import 'dart:html';
-import 'observatory_element.dart';
-import 'package:observatory/service.dart';
-import 'package:polymer/polymer.dart';
-
-@CustomTag('code-view')
-class CodeViewElement extends ObservatoryElement {
-  @published Code code;
-  CodeViewElement.created() : super.created();
-
-  @override
-  void attached() {
-    super.attached();
-    if (code == null) {
-      return;
-    }
-    code.load().then((Code c) {
-      c.loadScript();
-    });
-  }
-
-  void refresh(var done) {
-    code.reload().whenComplete(done);
-  }
-
-  Element _findJumpTarget(Element target) {
-    var jumpTarget = target.attributes['data-jump-target'];
-    if (jumpTarget == '') {
-      return null;
-    }
-    var address = int.parse(jumpTarget);
-    var node = shadowRoot.querySelector('#addr-$address');
-    if (node == null) {
-      return null;
-    }
-    return node;
-  }
-
-  void mouseOver(Event e, var detail, Node target) {
-    var jt = _findJumpTarget(target);
-    if (jt == null) {
-      return;
-    }
-    jt.classes.add('highlight');
-  }
-
-  void mouseOut(Event e, var detail, Node target) {
-    var jt = _findJumpTarget(target);
-    if (jt == null) {
-      return;
-    }
-    jt.classes.remove('highlight');
-  }
-}