Prepare for per-webview virtual time

components/scheduler/base/task_queue_impl.h

 // Copyright 2015 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 CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_
 #define CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 86 matching lines @@
   bool NeedsPumping() const override;
   void SetQueuePriority(QueuePriority priority) override;
   QueuePriority GetQueuePriority() const override;
   void PumpQueue(bool may_post_dowork) override;
   void SetPumpPolicy(PumpPolicy pump_policy) override;
   PumpPolicy GetPumpPolicy() const override;
   void AddTaskObserver(base::MessageLoop::TaskObserver* task_observer) override;
   void RemoveTaskObserver(
       base::MessageLoop::TaskObserver* task_observer) override;
   void SetTimeDomain(TimeDomain* time_domain) override;
+  TimeDomain* GetTimeDomain() const override;
 
   void UpdateImmediateWorkQueue(bool should_trigger_wakeup,
                                 const Task* previous_task);
   void UpdateDelayedWorkQueue(LazyNow* lazy_now,
                               bool should_trigger_wakeup,
                               const Task* previous_task);
 
   WakeupPolicy wakeup_policy() const {
     DCHECK(main_thread_checker_.CalledOnValidThread());
     return wakeup_policy_;
@@ skipping 179 matching lines @@
   const bool should_notify_observers_;
   const bool should_report_when_execution_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueueImpl);
 };
 
 }  // namespace internal
 }  // namespace scheduler
 
 #endif  // CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_IMPL_H_