List scripts in library and display script source

runtime/bin/vmservice/client/lib/src/observatory_elements/source_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 error_view_element;
+library source_view_element;
 
 import 'package:polymer/polymer.dart';
+import 'package:observatory/observatory.dart';
 import 'observatory_element.dart';
 
 /// Displays an Error response.
-@CustomTag('error-view')
-class ErrorViewElement extends ObservatoryElement {
-  @published String error = '';
-  @published var error_obj;
+@CustomTag('source-view')
+class SourceViewElement extends ObservatoryElement {
+  @published ScriptSource source;
 
-  ErrorViewElement.created() : super.created();
+  SourceViewElement.created() : super.created();
 }