Revert of Change VirtualTimePolicy::PAUSE_IF_NETWORK_FETCHES_PENDING

components/scheduler/renderer/renderer_scheduler_impl.h

 // Copyright 2014 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 COMPONENTS_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 #define COMPONENTS_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
@@ skipping 13 matching lines @@
 #include "components/scheduler/renderer/web_view_scheduler_impl.h"
 #include "components/scheduler/scheduler_export.h"
 
 namespace base {
 namespace trace_event {
 class ConvertableToTraceFormat;
 }
 }
 
 namespace scheduler {
-class AutoAdvancingVirtualTimeDomain;
 class RenderWidgetSchedulingState;
 class WebViewSchedulerImpl;
 class ThrottlingHelper;
 
 class SCHEDULER_EXPORT RendererSchedulerImpl
     : public RendererScheduler,
       public IdleHelper::Delegate,
       public SchedulerHelper::Observer,
       public RenderWidgetSignals::Observer,
       public TaskTimeTracker,
@@ skipping 93 matching lines @@
 
   // QueueingTimeEstimator::Client implementation:
   void OnQueueingTimeForWindowEstimated(base::TimeDelta queueing_time) override;
 
   // Returns a task runner where tasks run at the highest possible priority.
   scoped_refptr<TaskQueue> ControlTaskRunner();
 
   void RegisterTimeDomain(TimeDomain* time_domain);
   void UnregisterTimeDomain(TimeDomain* time_domain);
 
-  // Tells the scheduler that all TaskQueues should use virtual time.
-  void EnableVirtualTime();
-
   void SetExpensiveTaskBlockingAllowed(bool allowed);
 
   void AddWebViewScheduler(WebViewSchedulerImpl* web_view_scheduler);
   void RemoveWebViewScheduler(WebViewSchedulerImpl* web_view_scheduler);
 
   LongTaskTracker::LongTaskTiming GetLongTaskTiming();
 
   // Test helpers.
   SchedulerHelper* GetSchedulerHelperForTesting();
   TaskCostEstimator* GetLoadingTaskCostEstimatorForTesting();
   TaskCostEstimator* GetTimerTaskCostEstimatorForTesting();
   IdleTimeEstimator* GetIdleTimeEstimatorForTesting();
   base::TimeTicks CurrentIdleTaskDeadlineForTesting() const;
   void RunIdleTasksForTesting(const base::Closure& callback);
   void EndIdlePeriodForTesting(const base::Closure& callback,
                                base::TimeTicks time_remaining);
   bool PolicyNeedsUpdateForTesting();
 
   base::TickClock* tick_clock() const;
 
   RealTimeDomain* real_time_domain() const {
     return helper_.real_time_domain();
   }
 
-  AutoAdvancingVirtualTimeDomain* GetVirtualTimeDomain();
-
   ThrottlingHelper* throttling_helper() { return throttling_helper_.get(); }
 
  private:
   friend class RendererSchedulerImplTest;
   friend class RendererSchedulerImplForTest;
   friend class RenderWidgetSchedulingState;
 
   enum class ExpensiveTaskPolicy { RUN, BLOCK, THROTTLE };
 
   enum class TimeDomainType {
     REAL,
     THROTTLED,
-    VIRTUAL,
   };
 
   struct TaskQueuePolicy {
     TaskQueuePolicy()
         : is_enabled(true),
           priority(TaskQueue::NORMAL_PRIORITY),
           time_domain_type(TimeDomainType::REAL) {}
 
     bool is_enabled;
     TaskQueue::QueuePriority priority;
@@ skipping 154 matching lines @@
 
   SchedulerHelper helper_;
   IdleHelper idle_helper_;
   std::unique_ptr<ThrottlingHelper> throttling_helper_;
   RenderWidgetSignals render_widget_scheduler_signals_;
 
   const scoped_refptr<TaskQueue> control_task_runner_;
   const scoped_refptr<TaskQueue> compositor_task_runner_;
   std::set<scoped_refptr<TaskQueue>> loading_task_runners_;
   std::set<scoped_refptr<TaskQueue>> timer_task_runners_;
-  std::set<scoped_refptr<TaskQueue>> unthrottled_task_runners_;
   scoped_refptr<TaskQueue> default_loading_task_runner_;
   scoped_refptr<TaskQueue> default_timer_task_runner_;
 
-  // Note |virtual_time_domain_| is lazily created.
-  std::unique_ptr<AutoAdvancingVirtualTimeDomain> virtual_time_domain_;
-
   base::Closure update_policy_closure_;
   DeadlineTaskRunner delayed_update_policy_runner_;
   CancelableClosureHolder end_renderer_hidden_idle_period_closure_;
   CancelableClosureHolder suspend_timers_when_backgrounded_closure_;
 
   // We have decided to improve thread safety at the cost of some boilerplate
   // (the accessors) for the following data members.
 
   struct MainThreadOnly {
     MainThreadOnly(RendererSchedulerImpl* renderer_scheduler_impl,
@@ skipping 24 matching lines @@
     bool loading_tasks_seem_expensive;
     bool timer_tasks_seem_expensive;
     bool touchstart_expected_soon;
     bool have_seen_a_begin_main_frame;
     bool have_reported_blocking_intervention_in_current_policy;
     bool have_reported_blocking_intervention_since_navigation;
     bool has_visible_render_widget_with_touch_handler;
     bool begin_frame_not_expected_soon;
     bool expensive_task_blocking_allowed;
     bool in_idle_period_for_testing;
-    bool use_virtual_time;
     std::set<WebViewSchedulerImpl*> web_view_schedulers;  // Not owned.
     RAILModeObserver* rail_mode_observer;                 // Not owned.
   };
 
   struct AnyThread {
     AnyThread();
     ~AnyThread();
 
     base::TimeTicks last_idle_period_end_time;
     base::TimeTicks rails_loading_priority_deadline;
@@ skipping 57 matching lines @@
 
   PollableThreadSafeFlag policy_may_need_update_;
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_