Make SequencedWorkerPool a TaskRunner

base/threading/sequenced_worker_pool_task_runner.h

+// Copyright (c) 2012 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 BASE_THREADING_SEQUENCED_WORKER_POOL_TASK_RUNNER_H_
+#define BASE_THREADING_SEQUENCED_WORKER_POOL_TASK_RUNNER_H_
+#pragma once
+
+#include "base/base_export.h"
+#include "base/compiler_specific.h"
+#include "base/task_runner.h"
+#include "base/threading/sequenced_worker_pool_inner.h"
+
+namespace base {
+namespace internal {
+
+class SequencedWorkerPoolInner;
+
+// This class is part of the SequencedWorkerPool implementation.
+// DO NOT USE THIS CLASS DIRECTLY YOURSELF.
+class BASE_EXPORT SequencedWorkerPoolTaskRunner : public TaskRunner {
+ public:
+  SequencedWorkerPoolTaskRunner(
+      const scoped_refptr<SequencedWorkerPoolInner>& inner);
+  virtual ~SequencedWorkerPoolTaskRunner();
+
+  // TaskRunner implementation.
+  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
+                               const Closure& task,
+                               int64 delay_ms) OVERRIDE;
+  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+
+ private:
+  const scoped_refptr<SequencedWorkerPoolInner> inner_;
+
+  DISALLOW_COPY_AND_ASSIGN(SequencedWorkerPoolTaskRunner);
+};
+
+}  // namespace internal
+}  // namespace base
+
+#endif  // BASE_THREADING_SEQUENCED_WORKER_POOL_INNER_H_