Remove SchedulerWorkerPoolImpl::ReEnqueueSequenceCallback.

base/task_scheduler/task_scheduler_impl.h

 // Copyright 2016 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_SCHEDULER_TASK_SCHEDULER_IMPL_H_
 #define BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/base_export.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_piece.h"
 #include "base/synchronization/atomic_flag.h"
 #include "base/task_scheduler/delayed_task_manager.h"
 #include "base/task_scheduler/scheduler_single_thread_task_runner_manager.h"
 #include "base/task_scheduler/scheduler_worker_pool_impl.h"
-#include "base/task_scheduler/sequence.h"
 #include "base/task_scheduler/task_scheduler.h"
 #include "base/task_scheduler/task_tracker.h"
 #include "base/task_scheduler/task_traits.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 
 #if defined(OS_POSIX) && !defined(OS_NACL_SFI)
 #include "base/task_scheduler/task_tracker_posix.h"
 #endif
 
@@ skipping 31 matching lines @@
       const TaskTraits& traits) const override;
   void Shutdown() override;
   void FlushForTesting() override;
   void JoinForTesting() override;
 
  private:
   // Returns the worker pool that runs Tasks with |traits|.
   SchedulerWorkerPoolImpl* GetWorkerPoolForTraits(
       const TaskTraits& traits) const;
 
-  // Callback invoked when a non-single-thread |sequence| isn't empty after a
-  // worker pops a Task from it.
-  void ReEnqueueSequenceCallback(scoped_refptr<Sequence> sequence);
-
   const std::string name_;
   Thread service_thread_;
 #if defined(OS_POSIX) && !defined(OS_NACL_SFI)
   TaskTrackerPosix task_tracker_;
 #else
   TaskTracker task_tracker_;
 #endif
   DelayedTaskManager delayed_task_manager_;
   SchedulerSingleThreadTaskRunnerManager single_thread_task_runner_manager_;
 
   // There are 4 SchedulerWorkerPoolImpl in this array to match the 4
   // SchedulerWorkerPoolParams in TaskScheduler::InitParams.
   std::unique_ptr<SchedulerWorkerPoolImpl> worker_pools_[4];
 
 #if DCHECK_IS_ON()
   // Set once JoinForTesting() has returned.
   AtomicFlag join_for_testing_returned_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(TaskSchedulerImpl);
 };
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_