Introduce TaskRunner::RunsTasksInCurrentSequence()

base/deferred_sequenced_task_runner.h

 // Copyright (c) 2013 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_DEFERRED_SEQUENCED_TASK_RUNNER_H_
 #define BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_
 
 #include <vector>
 
 #include "base/base_export.h"
@@ skipping 12 matching lines @@
 // queues up all requests until the first call to Start() is issued.
 class BASE_EXPORT DeferredSequencedTaskRunner : public SequencedTaskRunner {
  public:
   explicit DeferredSequencedTaskRunner(
       scoped_refptr<SequencedTaskRunner> target_runner);
 
   // TaskRunner implementation
   bool PostDelayedTask(const tracked_objects::Location& from_here,
                        OnceClosure task,
                        TimeDelta delay) override;
-  bool RunsTasksOnCurrentThread() const override;
+  bool RunsTasksInCurrentSequence() const override;
 
   // SequencedTaskRunner implementation
   bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
                                   OnceClosure task,
                                   TimeDelta delay) override;
 
   // Start the execution - posts all queued tasks to the target executor. The
   // deferred tasks are posted with their initial delay, meaning that the task
   // execution delay is actually measured from Start.
   // Fails when called a second time.
@@ skipping 27 matching lines @@
   bool started_;
   const scoped_refptr<SequencedTaskRunner> target_task_runner_;
   std::vector<DeferredTask> deferred_tasks_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(DeferredSequencedTaskRunner);
 };
 
 }  // namespace base
 
 #endif  // BASE_DEFERRED_SEQUENCED_TASK_RUNNER_H_