[scheduler] Add WakeupBudgetPool.

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

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
index e247edc87cc13bd6953fc63dd4b56c097a835f70..c12148ad6bccc15badfe76dd799f8ecd3224ddf5 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.cc
@@ -224,7 +224,8 @@ RendererSchedulerImpl::MainThreadOnly::MainThreadOnly(
       in_idle_period_for_testing(false),
       use_virtual_time(false),
       is_audio_playing(false),
-      rail_mode_observer(nullptr) {
+      rail_mode_observer(nullptr),
+      wake_up_budget_pool(nullptr) {
   foreground_main_thread_load_tracker.Resume(now);
 }
 
@@ -315,6 +316,7 @@ scoped_refptr<TaskQueue> RendererSchedulerImpl::NewLoadingTaskRunner(
   }
   loading_task_queue->AddTaskObserver(
       &GetMainThreadOnly().loading_task_cost_estimator);
+  AddQueueToWakeupBudgetPool(loading_task_queue.get());
   return loading_task_queue;
 }
 
@@ -341,6 +343,7 @@ scoped_refptr<TaskQueue> RendererSchedulerImpl::NewTimerTaskRunner(
   }
   timer_task_queue->AddTaskObserver(
       &GetMainThreadOnly().timer_task_cost_estimator);
+  AddQueueToWakeupBudgetPool(timer_task_queue.get());
   return timer_task_queue;
 }
 
@@ -1865,6 +1868,20 @@ bool RendererSchedulerImpl::ShouldDisableThrottlingBecauseOfAudio(
          now;
 }
 
+void RendererSchedulerImpl::AddQueueToWakeupBudgetPool(TaskQueue* queue) {
+  if (!GetMainThreadOnly().wake_up_budget_pool) {
+    GetMainThreadOnly().wake_up_budget_pool =
+        task_queue_throttler()->CreateWakeupBudgetPool("renderer-wake-up-pool");
+    // We intentionally set current wakeup time to 0 due to lazy initialization.
+    GetMainThreadOnly().wake_up_budget_pool->SetWakeupRate(base::TimeTicks(),
+                                                           1);
+    GetMainThreadOnly().wake_up_budget_pool->SetWakeupDuration(
+        base::TimeTicks(), base::TimeDelta());
+  }
+  GetMainThreadOnly().wake_up_budget_pool->AddQueue(tick_clock()->NowTicks(),
+                                                    queue);
+}
+
 TimeDomain* RendererSchedulerImpl::GetActiveTimeDomain() {
   if (GetMainThreadOnly().use_virtual_time) {
     return GetVirtualTimeDomain();