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Migrate lib_2/developer/timeline_recorders_test.dart to null safety.

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Looks like this was added to lib_2 after the initial migration.

Change-Id: Ic56357cd99c9b369c38628f4527cfa84f50f5f72
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152600
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This commit is contained in:
Robert Nystrom 2020-06-25 21:21:32 +00:00 committed by commit-bot@chromium.org
parent d022d4c9e1
commit ffa7969bb8
1 changed files with 23 additions and 0 deletions
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23
tests/lib/developer/timeline_recorders_test.dart Normal file
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// Copyright (c) 2020, 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=--timeline_streams=VM,Isolate,GC,Dart --timeline_recorder=endless
/// VMOptions=--timeline_streams=VM,Isolate,GC,Dart --timeline_recorder=ring
/// VMOptions=--timeline_streams=VM,Isolate,GC,Dart --timeline_recorder=startup
/// VMOptions=--timeline_streams=VM,Isolate,GC,Dart --timeline_recorder=systrace
import 'dart:developer';
void main() {
Timeline.startSync('A');
Timeline.instantSync('B');
var task = new TimelineTask();
task.start('C');
task.instant('D');
task.finish();
Timeline.finishSync();
}