TaskScheduler [11] Support ExecutionMode::SINGLE_THREADED.

base/task_scheduler/scheduler_worker_thread.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/scheduler_worker_thread.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 41 matching lines @@
       task_tracker_(task_tracker) {
   DCHECK(delegate_);
   DCHECK(task_tracker_);
 
   const size_t kDefaultStackSize = 0;
   PlatformThread::CreateWithPriority(kDefaultStackSize, this, &thread_handle_,
                                      thread_priority);
 }
 
 void SchedulerWorkerThread::ThreadMain() {
-  delegate_->OnMainEntry();
+  delegate_->OnMainEntry(this);
 
   // A SchedulerWorkerThread starts out sleeping.
   wake_up_event_.Wait();
 
   while (!task_tracker_->shutdown_completed() && !ShouldExitForTesting()) {
     // Get the sequence containing the next task to execute.
     scoped_refptr<Sequence> sequence = delegate_->GetWork(this);
 
     if (!sequence) {
       wake_up_event_.Wait();
@@ skipping 21 matching lines @@
   }
 }
 
 bool SchedulerWorkerThread::ShouldExitForTesting() const {
   AutoSchedulerLock auto_lock(should_exit_for_testing_lock_);
   return should_exit_for_testing_;
 }
 
 }  // namespace internal
 }  // namespace base