Task Scheduler.

base/task_scheduler/task_traits.cc

Index: base/task_scheduler/task_traits.cc
diff --git a/base/task_scheduler/task_traits.cc b/base/task_scheduler/task_traits.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b5dd8b7ebb6321c57923127287692fcd086fb3bd
--- /dev/null
+++ b/base/task_scheduler/task_traits.cc
@@ -0,0 +1,31 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/task_scheduler/task_traits.h"
+
+namespace base {
+
+TaskTraits::TaskTraits()
+    : with_file_io_(false),
+      priority_(TaskPriority::BACKGROUND),
+      shutdown_behavior_(TaskShutdownBehavior::BLOCK_SHUTDOWN) {}
+
+TaskTraits::~TaskTraits() = default;
+
+TaskTraits& TaskTraits::WithFileIO() {
+  with_file_io_ = true;
+  return *this;
+}
+
+TaskTraits& TaskTraits::WithPriority(TaskPriority priority) {
+  priority_ = priority;
+  return *this;
+}
+
+TaskTraits& TaskTraits::WithShutdownBehavior(TaskShutdownBehavior behavior) {
+  shutdown_behavior_ = behavior;
+  return *this;
+}
+
+}  // namespace base