Fix analyzer run on bot

runtime/observatory/tests/service/debugging_inlined_finally_test.dart

 // Copyright (c) 2015, 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.
 // VMOptions=--compile-all --error_on_bad_type --error_on_bad_override
 
+import "package:expect/expect.dart";
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 import 'dart:async';
 import 'dart:developer';
 
 testFunction() {
   debugger();
   var a;
   try {
@@ skipping 102 matching lines @@
 
   Script script = stack['frames'][0].location.script;
   expect(script.tokenToLine(stack['frames'][0].location.tokenPos), equals(26));
 },
 
 resumeIsolate,
 
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testMain);