[content]: Add CanExceedIdleDeadlineIfRequired function to RendererScheduler.

content/renderer/scheduler/renderer_scheduler_impl.cc

Index: content/renderer/scheduler/renderer_scheduler_impl.cc
diff --git a/content/renderer/scheduler/renderer_scheduler_impl.cc b/content/renderer/scheduler/renderer_scheduler_impl.cc
index dffd0b5d5b61951c0022d2bd3a8c301642c455cb..77d10487b0a52158538958ba80d04522d6711947 100644
--- a/content/renderer/scheduler/renderer_scheduler_impl.cc
+++ b/content/renderer/scheduler/renderer_scheduler_impl.cc
@@ -519,6 +519,7 @@ void RendererSchedulerImpl::StartIdlePeriod(IdlePeriodState new_state) {
                            "RendererSchedulerIdlePeriod", this);
   DCHECK(main_thread_checker_.CalledOnValidThread());
   DCHECK(IsInIdlePeriod(new_state));
+
   renderer_task_queue_selector_->EnableQueue(
       IDLE_TASK_QUEUE, RendererTaskQueueSelector::BEST_EFFORT_PRIORITY);
   task_queue_manager_->PumpQueue(IDLE_TASK_QUEUE);
@@ -563,6 +564,13 @@ bool RendererSchedulerImpl::IsInIdlePeriod(IdlePeriodState state) {
   return state != IdlePeriodState::NOT_IN_IDLE_PERIOD;
 }
 
+bool RendererSchedulerImpl::CanExceedIdleDeadlineIfRequired() const {
+  TRACE_EVENT_BEGIN0("renderer.scheduler", "CanExceedIdleDeadlineIfRequired");
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+  return idle_period_state_ ==
+         IdlePeriodState::IN_LONG_IDLE_PERIOD_WITH_MAX_DEADLINE;
+}
+
 void RendererSchedulerImpl::SetTimeSourceForTesting(
     scoped_refptr<cc::TestNowSource> time_source) {
   DCHECK(main_thread_checker_.CalledOnValidThread());