Move throttling of background timers into the renderer scheduler

components/scheduler/base/task_queue_manager_unittest.cc

Index: components/scheduler/base/task_queue_manager_unittest.cc
diff --git a/components/scheduler/base/task_queue_manager_unittest.cc b/components/scheduler/base/task_queue_manager_unittest.cc
index 251ac56523ae93077f53192525332fa6f95d4c9c..c3566c59eb3501ebff9ec927895123eaa119b80d 100644
--- a/components/scheduler/base/task_queue_manager_unittest.cc
+++ b/components/scheduler/base/task_queue_manager_unittest.cc
@@ -233,6 +233,7 @@ TEST_F(TaskQueueManagerTest, DelayedTaskPosting) {
                                delay);
   EXPECT_EQ(delay, test_task_runner_->DelayToNextTaskTime());
   EXPECT_TRUE(runners_[0]->IsQueueEmpty());
+  EXPECT_TRUE(runners_[0]->HasPendingDelayedTask());
   EXPECT_TRUE(run_order.empty());
 
   // The task doesn't run before the delay has completed.
@@ -242,6 +243,7 @@ TEST_F(TaskQueueManagerTest, DelayedTaskPosting) {
   // After the delay has completed, the task runs normally.
   test_task_runner_->RunForPeriod(base::TimeDelta::FromMilliseconds(1));
   EXPECT_THAT(run_order, ElementsAre(1));
+  EXPECT_FALSE(runners_[0]->HasPendingDelayedTask());
 }
 
 bool MessageLoopTaskCounter(size_t* count) {
@@ -1102,33 +1104,6 @@ TEST_F(TaskQueueManagerTest, DelayedTaskDoesNotSkipAHeadOfShorterDelayedTask) {
   EXPECT_THAT(run_order, ElementsAre(2, 1));
 }
 
-TEST_F(TaskQueueManagerTest, DelayedTaskWithAbsoluteRunTime) {
-  Initialize(1u);
-
-  // One task in the past, two with the exact same run time and one in the
-  // future.
-  base::TimeDelta delay = base::TimeDelta::FromMilliseconds(10);
-  base::TimeTicks runTime1 = now_src_->NowTicks() - delay;
-  base::TimeTicks runTime2 = now_src_->NowTicks();
-  base::TimeTicks runTime3 = now_src_->NowTicks();
-  base::TimeTicks runTime4 = now_src_->NowTicks() + delay;
-
-  std::vector<int> run_order;
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&TestTask, 1, &run_order), runTime1);
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&TestTask, 2, &run_order), runTime2);
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&TestTask, 3, &run_order), runTime3);
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&TestTask, 4, &run_order), runTime4);
-
-  now_src_->Advance(2 * delay);
-  test_task_runner_->RunUntilIdle();
-
-  EXPECT_THAT(run_order, ElementsAre(1, 2, 3, 4));
-}
-
 void CheckIsNested(bool* is_nested) {
   *is_nested = base::MessageLoop::current()->IsNested();
 }
@@ -1323,20 +1298,6 @@ TEST_F(TaskQueueManagerTest, OnUnregisterTaskQueue) {
   manager_->SetObserver(nullptr);
 }
 
-TEST_F(TaskQueueManagerTest, ScheduleDelayedWorkIsNotReEntrant) {
-  Initialize(1u);
-
-  // Post two tasks into the past. The second one used to trigger a deadlock
-  // because it tried to re-entrantly wake the first task in the same queue.
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&NullTask),
-      base::TimeTicks() + base::TimeDelta::FromMicroseconds(100));
-  runners_[0]->PostDelayedTaskAt(
-      FROM_HERE, base::Bind(&NullTask),
-      base::TimeTicks() + base::TimeDelta::FromMicroseconds(200));
-  test_task_runner_->RunUntilIdle();
-}
-
 void HasOneRefTask(std::vector<bool>* log, internal::TaskQueueImpl* tq) {
   log->push_back(tq->HasOneRef());
 }