Use words please.

runtime/observatory/tests/service/get_retaining_path_rpc_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:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 
 import 'test_helper.dart';
 
@@ skipping 14 matching lines @@
   target2 = new _TestClass(null, null);
   globalObject = new _TestClass(target1, target2);
 
   target3 = new _TestClass(null, null);
   globalList = new List(100);
   globalList[12] = target3;
 }
 
 eval(Isolate isolate, String expression) async {
   Map params = {
-    'targetId': isolate.rootLib.id,
+    'targetId': isolate.rootLibrary.id,
     'expression': expression,
   };
-  return await isolate.invokeRpcNoUpgrade('eval', params);
+  return await isolate.invokeRpcNoUpgrade('evaluate', params);
 }
 
 var tests = [
   // simple path
   (Isolate isolate) async {
     var obj = await eval(isolate, 'globalObject');
     var params = {
       'targetId': obj['id'],
       'limit': 4,
     };
@@ skipping 54 matching lines @@
       'limit': 4,
     };
     var result = await isolate.invokeRpcNoUpgrade('_getRetainingPath', params);
     expect(result['type'], equals('RetainingPath'));
     expect(result['elements'][0]['parentListIndex'], equals(12));
     expect(result['elements'][2]['value']['name'], equals('globalList'));
   },
 ];
 
 main(args) async => runIsolateTests(args, tests, testeeBefore:warmup);