Remove SchedulerWorkerPoolImpl::ReEnqueueSequenceCallback.

base/task_scheduler/task_scheduler_impl.cc

Index: base/task_scheduler/task_scheduler_impl.cc
diff --git a/base/task_scheduler/task_scheduler_impl.cc b/base/task_scheduler/task_scheduler_impl.cc
index 01786493748a967f9901b206245d2bb5879f05c0..b31f6061a40be529141c421031340ec0950314d5 100644
--- a/base/task_scheduler/task_scheduler_impl.cc
+++ b/base/task_scheduler/task_scheduler_impl.cc
@@ -6,8 +6,6 @@
 
 #include <utility>
 
-#include "base/bind.h"
-#include "base/bind_helpers.h"
 #include "base/memory/ptr_util.h"
 #include "base/task_scheduler/delayed_task_manager.h"
 #include "base/task_scheduler/scheduler_single_thread_task_runner_manager.h"
@@ -196,12 +194,6 @@ void TaskSchedulerImpl::Initialize(
           task_tracker_.get(), delayed_task_manager_.get());
   single_thread_task_runner_manager_->Start();
 
-  // Callback invoked by workers to re-enqueue a sequence in the appropriate
-  // PriorityQueue.
-  const SchedulerWorkerPoolImpl::ReEnqueueSequenceCallback
-      re_enqueue_sequence_callback =
-          Bind(&TaskSchedulerImpl::ReEnqueueSequenceCallback, Unretained(this));
-
   // Order must match the EnvironmentType enum.
   const SchedulerWorkerPoolParams* worker_pool_params[] = {
       &init_params.background_worker_pool_params,
@@ -226,8 +218,7 @@ void TaskSchedulerImpl::Initialize(
     // deleted before all its worker pools have been joined.
     worker_pools_[environment_type] = MakeUnique<SchedulerWorkerPoolImpl>(
         name_ + kEnvironmentParams[environment_type].name_suffix,
-        kEnvironmentParams[environment_type].priority_hint,
-        re_enqueue_sequence_callback, task_tracker_.get(),
+        kEnvironmentParams[environment_type].priority_hint, task_tracker_.get(),
         delayed_task_manager_.get());
     worker_pools_[environment_type]->Start(
         *worker_pool_params[environment_type]);
@@ -239,21 +230,5 @@ SchedulerWorkerPoolImpl* TaskSchedulerImpl::GetWorkerPoolForTraits(
   return worker_pools_[GetEnvironmentIndexForTraits(traits)].get();
 }
 
-void TaskSchedulerImpl::ReEnqueueSequenceCallback(
-    scoped_refptr<Sequence> sequence) {
-  DCHECK(sequence);
-
-  const SequenceSortKey sort_key = sequence->GetSortKey();
-
-  // The next task in |sequence| should run in a worker pool suited for its
-  // traits, except for the priority which is adjusted to the highest priority
-  // in |sequence|.
-  const TaskTraits traits =
-      sequence->PeekTaskTraits().WithPriority(sort_key.priority());
-
-  GetWorkerPoolForTraits(traits)->ReEnqueueSequence(std::move(sequence),
-                                                    sort_key);
-}
-
 }  // namespace internal
 }  // namespace base