Moving all the incident reporting stuff to a common folder

chrome/browser/safe_browsing/delayed_callback_runner.h

-// Copyright 2014 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 CHROME_BROWSER_SAFE_BROWSING_DELAYED_CALLBACK_RUNNER_H_
-#define CHROME_BROWSER_SAFE_BROWSING_DELAYED_CALLBACK_RUNNER_H_
-
-#include <list>
-
-#include "base/callback_forward.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/task_runner.h"
-#include "base/threading/thread_checker.h"
-#include "base/time/time.h"
-#include "base/timer/timer.h"
-
-namespace safe_browsing {
-
-// Runs callbacks on a given task runner, waiting a certain amount of time
-// between each. The delay also applies to running the first callback (i.e.,
-// the first callback will be run some time after Start() is invoked). Callbacks
-// are deleted after they are run. Start() is idempotent: calling it while the
-// runner is doing its job has no effect.
-class DelayedCallbackRunner {
- public:
-  // Constructs an instance that runs tasks on |callback_runner|, waiting for
-  // |delay| time to pass before and between each callback.
-  DelayedCallbackRunner(base::TimeDelta delay,
-                        const scoped_refptr<base::TaskRunner>& task_runner);
-  ~DelayedCallbackRunner();
-
-  // Registers |callback| with the runner. A copy of |callback| is held until it
-  // is run.
-  void RegisterCallback(const base::Closure& callback);
-
-  // Starts running the callbacks after the delay.
-  void Start();
-
- private:
-  typedef std::list<base::Closure> CallbackList;
-
-  // A callback invoked by the timer to run the next callback. The timer is
-  // restarted to process the next callback if there is one.
-  void OnTimer();
-
-  base::ThreadChecker thread_checker_;
-
-  // The runner on which callbacks are to be run.
-  scoped_refptr<base::TaskRunner> task_runner_;
-
-  // The list of callbacks to run. Callbacks are removed when run.
-  CallbackList callbacks_;
-
-  // callbacks_.end() when no work is being done. Any other value otherwise.
-  CallbackList::iterator next_callback_;
-
-  // A timer upon the firing of which the next callback will be run.
-  base::DelayTimer<DelayedCallbackRunner> timer_;
-
-  DISALLOW_COPY_AND_ASSIGN(DelayedCallbackRunner);
-};
-
-}  // namespace safe_browsing
-
-#endif  // CHROME_BROWSER_SAFE_BROWSING_DELAYED_CALLBACK_RUNNER_H_