TaskScheduler: Change Sequence::PeekTask to Sequence::TakeTask.

base/task_scheduler/task_tracker.cc

 // 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.
 
 #include "base/task_scheduler/task_tracker.h"
 
 #include <limits>
 
 #include "base/callback.h"
 #include "base/debug/task_annotator.h"
@@ skipping 187 matching lines @@
 
   if (task->delayed_run_time.is_null())
     subtle::NoBarrier_AtomicIncrement(&num_pending_undelayed_tasks_, 1);
 
   debug::TaskAnnotator task_annotator;
   task_annotator.DidQueueTask(kQueueFunctionName, *task);
 
   return true;
 }
 
-bool TaskTracker::RunTask(const Task* task,
+bool TaskTracker::RunTask(std::unique_ptr<Task> task,
                           const SequenceToken& sequence_token) {
   DCHECK(task);
   DCHECK(sequence_token.IsValid());
 
   const TaskShutdownBehavior shutdown_behavior =
       task->traits.shutdown_behavior();
   const bool can_run_task = BeforeRunTask(shutdown_behavior);
 
   if (can_run_task) {
     // All tasks run through here and the scheduler itself doesn't use
@@ skipping 216 matching lines @@
       subtle::NoBarrier_AtomicIncrement(&num_pending_undelayed_tasks_, -1);
   DCHECK_GE(new_num_pending_undelayed_tasks, 0);
   if (new_num_pending_undelayed_tasks == 0) {
     AutoSchedulerLock auto_lock(flush_lock_);
     flush_cv_->Signal();
   }
 }
 
 }  // namespace internal
 }  // namespace base