base::Bind() conversion for chrome/browser/search_engines

base/task_queue.h

-// Copyright (c) 2011 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_TASK_QUEUE_H_
-#define BASE_TASK_QUEUE_H_
-#pragma once
-
-#include <deque>
-
-#include "base/base_export.h"
-#include "base/task.h"
-
-// A TaskQueue is a queue of tasks waiting to be run.  To run the tasks, call
-// the Run method.  A task queue is itself a Task so that it can be placed in a
-// message loop or another task queue.
-class BASE_EXPORT TaskQueue : public Task {
- public:
-  TaskQueue();
-  virtual ~TaskQueue();
-
-  // Push the specified task onto the queue.  When the queue is run, the tasks
-  // will be run in the order they are pushed.
-  //
-  // This method takes ownership of |task| and will delete task after it is run
-  // (or when the TaskQueue is destroyed, if we never got a chance to run it).
-  void Push(Task* task);
-
-  // Remove all tasks from the queue.  The tasks are deleted.
-  void Clear();
-
-  // Returns true if this queue contains no tasks.
-  bool IsEmpty() const;
-
-  // Run all the tasks in the queue.  New tasks pushed onto the queue during
-  // a run will be run next time |Run| is called.
-  virtual void Run();
-
- private:
-   // The list of tasks we are waiting to run.
-   std::deque<Task*> queue_;
-};
-
-#endif  // BASE_TASK_QUEUE_H_