Replace RunInSeries() and RunInParallel() with CallbackSeries helper class.

media/base/callback_util.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 MEDIA_BASE_CALLBACK_UTIL_H_
-#define MEDIA_BASE_CALLBACK_UTIL_H_
-
-#include <queue>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "media/base/pipeline_status.h"
-
-namespace media {
-
-typedef base::Callback<void(const base::Closure&)> ClosureFunc;
-typedef base::Callback<void(const PipelineStatusCB&)> PipelineStatusCBFunc;
-
-// Executes the closures in FIFO order, executing |done_cb| when the last
-// closure has completed running.
-//
-// All closures (including |done_cb|) are executed on same thread as the
-// calling thread.
-void RunInSeries(scoped_ptr<std::queue<ClosureFunc> > closures,
-                 const base::Closure& done_cb);
-
-// Executes the closures in FIFO order, executing |done_cb| when the last
-// closure has completed running, reporting the final status code.
-//
-// Closures will stop being executed if a previous closure in the series
-// returned an error status and |done_cb| will be executed prematurely.
-//
-// All closures (including |done_cb|) are executed on same thread as the
-// calling thread.
-void RunInSeriesWithStatus(
-    scoped_ptr<std::queue<PipelineStatusCBFunc> > status_cbs,
-    const PipelineStatusCB& done_cb);
-
-// Executes the closures in parallel, executing |done_cb| when all closures have
-// completed running.
-//
-// No attempt is made to parallelize execution of the closures. In other words,
-// this method will run all closures in FIFO order if said closures execute
-// synchronously on the same call stack.
-//
-// All closures (including |done_cb|) are executed on same thread as the
-// calling thread.
-void RunInParallel(scoped_ptr<std::queue<ClosureFunc> > closures,
-                   const base::Closure& done_cb);
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_CALLBACK_UTIL_H_