Convert //base to use std::unique_ptr

base/task_scheduler/task_tracker.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_TRACKER_H_
 #define BASE_TASK_SCHEDULER_TASK_TRACKER_H_
 
+#include <memory>
+
 #include "base/base_export.h"
 #include "base/callback_forward.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram_base.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/task_scheduler/scheduler_lock.h"
 #include "base/task_scheduler/task.h"
 #include "base/task_scheduler/task_traits.h"
 
 namespace base {
 namespace internal {
 
 // All tasks go through the scheduler's TaskTracker when they are posted and
 // when they are executed. The TaskTracker enforces shutdown semantics and takes
 // care of tracing and profiling. This class is thread-safe.
 class BASE_EXPORT TaskTracker {
  public:
   TaskTracker();
   ~TaskTracker();
 
   // Synchronously shuts down the scheduler. Once this is called, only tasks
   // posted with the BLOCK_SHUTDOWN behavior will be run. Returns when:
   // - All SKIP_ON_SHUTDOWN tasks that were already running have completed their
   //   execution.
   // - All posted BLOCK_SHUTDOWN tasks have completed their execution.
   // This must only be called once.
   void Shutdown();
 
   // Posts |task| by calling |post_task_callback| unless the current shutdown
   // state prevents that. A task forwarded to |post_task_callback| must be
   // handed back to this instance's RunTask() when it is to be executed.
-  void PostTask(const Callback<void(scoped_ptr<Task>)>& post_task_callback,
-                scoped_ptr<Task> task);
+  void PostTask(const Callback<void(std::unique_ptr<Task>)>& post_task_callback,
+                std::unique_ptr<Task> task);
 
   // Runs |task| unless the current shutdown state prevents that. |task| must
   // have been successfully posted via PostTask() first.
   void RunTask(const Task* task);
 
   // Returns true while shutdown is in progress (i.e. Shutdown() has been called
   // but hasn't returned).
   bool IsShuttingDownForTesting() const;
 
   bool shutdown_completed() const {
@@ skipping 16 matching lines @@
   // Called after a task with |shutdown_behavior| has been run by RunTask().
   // Updates |num_tasks_blocking_shutdown_| and signals |shutdown_cv_| if
   // necessary.
   void AfterRunTask(TaskShutdownBehavior shutdown_behavior);
 
   // Synchronizes access to all members.
   mutable SchedulerLock lock_;
 
   // Condition variable signaled when |num_tasks_blocking_shutdown_| reaches
   // zero while shutdown is in progress. Null if shutdown isn't in progress.
-  scoped_ptr<ConditionVariable> shutdown_cv_;
+  std::unique_ptr<ConditionVariable> shutdown_cv_;
 
   // Number of tasks blocking shutdown.
   size_t num_tasks_blocking_shutdown_ = 0;
 
   // Number of BLOCK_SHUTDOWN tasks posted during shutdown.
   HistogramBase::Sample num_block_shutdown_tasks_posted_during_shutdown_ = 0;
 
   // True once Shutdown() has returned. No new task can be scheduled after this.
   bool shutdown_completed_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(TaskTracker);
 };
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_TASK_SCHEDULER_TASK_TRACKER_H_