pkg/vm_service_client: add getSourceReport to VMServiceReference

test/isolate_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.
 
 import 'dart:async';
 
 import 'package:async/async.dart';
 import 'package:json_rpc_2/json_rpc_2.dart' as rpc;
 import 'package:test/test.dart';
 import 'package:vm_service_client/vm_service_client.dart';
@@ skipping 358 matching lines @@
           inner();
           print("after inner"); // line 10
         }
       """, main: r"""
         outer();
         print("after outer"); // line 18
       """);
 
       isolate = (await client.getVM()).isolates.first;
       await isolate.waitUntilPaused();
-      stdout = new StreamQueue(lines.bind(isolate.stdout));
+      stdout = new StreamQueue(isolate.stdout.transform(lines));
     });
 
     test("resumes normal execution by default", () async {
       expect(stdout.next, completion(equals("in inner")));
       expect(stdout.next, completion(equals("after inner")));
       expect(stdout.next, completion(equals("after outer")));
 
       isolate.resume();
     });
 
@@ skipping 151 matching lines @@
   var vm = await client.getVM();
   var main = vm.isolates.first;
 
   var otherFuture = client.onIsolateRunnable.first;
   await main.resume();
   var other = await otherFuture;
   await other.resume();
 
   return [main, other];
 }