Revert of scheduler: Add a base directory

components/scheduler/child/lazy_now.h

+// Copyright 2015 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.
+
+#ifndef COMPONENTS_SCHEDULER_CHILD_LAZY_NOW_H_
+#define COMPONENTS_SCHEDULER_CHILD_LAZY_NOW_H_
+
+#include "base/time/time.h"
+
+namespace scheduler {
+class TaskQueueManager;
+
+namespace internal {
+
+// Now() is somewhat expensive so it makes sense not to call Now() unless we
+// really need to.
+class LazyNow {
+ public:
+  explicit LazyNow(base::TimeTicks now)
+      : task_queue_manager_(nullptr), now_(now) {
+    DCHECK(!now.is_null());
+  }
+
+  explicit LazyNow(TaskQueueManager* task_queue_manager)
+      : task_queue_manager_(task_queue_manager) {}
+
+  base::TimeTicks Now();
+
+ private:
+  TaskQueueManager* task_queue_manager_;  // NOT OWNED
+  base::TimeTicks now_;
+};
+
+}  // namespace internal
+}  // namespace scheduler
+
+#endif  // COMPONENTS_SCHEDULER_CHILD_LAZY_NOW_H_