Allow tasks scheduled for the instant virtual time budges expires to run

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
index 00c85c4de334aa48883ccdc1b4187ea1626b5945..44c6e8133e4241a874b3b9ef4fb9e01f4f330593 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
@@ -117,6 +117,8 @@ class PLATFORM_EXPORT RendererSchedulerImpl
   void Shutdown() override;
   void SuspendTimerQueue() override;
   void ResumeTimerQueue() override;
+  void InsertTimerFence() override;
+  void RemoveTimerFence() override;
   void SetTimerQueueSuspensionWhenBackgroundedEnabled(bool enabled) override;
   void SetTopLevelBlameContext(
       base::trace_event::BlameContext* blame_context) override;
@@ -493,6 +495,7 @@ class PLATFORM_EXPORT RendererSchedulerImpl
     bool in_idle_period_for_testing;
     bool use_virtual_time;
     bool is_audio_playing;
+    bool virtual_time_suspended;
     std::set<WebViewSchedulerImpl*> web_view_schedulers;  // Not owned.
     RAILModeObserver* rail_mode_observer;                 // Not owned.
     WakeUpBudgetPool* wake_up_budget_pool;                // Not owned.