TaskScheduler: Remove base::ExecutionMode.

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 <stddef.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/synchronization/atomic_flag.h"
-#include "base/task_runner.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_traits.h"
 #include "base/threading/thread.h"
 
 namespace base {
 
 class HistogramBase;
 class SchedulerWorkerPoolParams;
@@ skipping 19 matching lines @@
   // Destroying a TaskSchedulerImpl is not allowed in production; it is always
   // leaked. In tests, it can only be destroyed after JoinForTesting() has
   // returned.
   ~TaskSchedulerImpl() override;
 
   // TaskScheduler:
   void PostTaskWithTraits(const tracked_objects::Location& from_here,
                           const TaskTraits& traits,
                           const Closure& task) override;
   scoped_refptr<TaskRunner> CreateTaskRunnerWithTraits(
-      const TaskTraits& traits,
-      ExecutionMode execution_mode) override;
+      const TaskTraits& traits) override;
+  scoped_refptr<SequencedTaskRunner> CreateSequencedTaskRunnerWithTraits(
+      const TaskTraits& traits) override;
+  scoped_refptr<SingleThreadTaskRunner> CreateSingleThreadTaskRunnerWithTraits(
+      const TaskTraits& traits) override;
   std::vector<const HistogramBase*> GetHistograms() const override;
   void Shutdown() override;
   void FlushForTesting() override;
 
   // Joins all threads of this scheduler. Tasks that are already running are
   // allowed to complete their execution. This can only be called once.
   void JoinForTesting();
 
  private:
   explicit TaskSchedulerImpl(const WorkerPoolIndexForTraitsCallback&
@@ skipping 20 matching lines @@
   AtomicFlag join_for_testing_returned_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(TaskSchedulerImpl);
 };
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_TASK_SCHEDULER_TASK_SCHEDULER_IMPL_H_