[Reland] Dont post delayed DoWork for disabled queues.

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

Index: third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler_unittest.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler_unittest.cc b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler_unittest.cc
index d5fdb53a7fc929637ab09646c3c750ecd67a0088..79cef1c6244f84d61a0c8960f4472ce81d3869ff 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler_unittest.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/task_queue_throttler_unittest.cc
@@ -979,5 +979,41 @@ TEST_F(TaskQueueThrottlerTest, AddQueueToBudgetPoolWhenThrottlingDisabled) {
                                      base::TimeDelta::FromMilliseconds(300)));
 }
 
+TEST_F(TaskQueueThrottlerTest, DisabledQueueThenEnabledQueue) {
+  std::vector<base::TimeTicks> run_times;
+
+  scoped_refptr<TaskQueue> second_queue =
+      scheduler_->NewTimerTaskRunner(TaskQueue::QueueType::TEST);
+
+  task_queue_throttler_->IncreaseThrottleRefCount(timer_queue_.get());
+  task_queue_throttler_->IncreaseThrottleRefCount(second_queue.get());
+
+  timer_queue_->PostDelayedTask(FROM_HERE,
+                                base::Bind(&TestTask, &run_times, clock_.get()),
+                                base::TimeDelta::FromMilliseconds(100));
+  second_queue->PostDelayedTask(FROM_HERE,
+                                base::Bind(&TestTask, &run_times, clock_.get()),
+                                base::TimeDelta::FromMilliseconds(200));
+
+  std::unique_ptr<TaskQueue::QueueEnabledVoter> voter =
+      timer_queue_->CreateQueueEnabledVoter();
+  voter->SetQueueEnabled(false);
+
+  clock_->Advance(base::TimeDelta::FromMilliseconds(250));
+
+  mock_task_runner_->RunUntilIdle();
+
+  EXPECT_THAT(run_times, ElementsAre(base::TimeTicks() +
+                                     base::TimeDelta::FromMilliseconds(1000)));
+
+  voter->SetQueueEnabled(true);
+  mock_task_runner_->RunUntilIdle();
+
+  EXPECT_THAT(
+      run_times,
+      ElementsAre(base::TimeTicks() + base::TimeDelta::FromMilliseconds(1000),
+                  base::TimeTicks() + base::TimeDelta::FromMilliseconds(2000)));
+}
+
 }  // namespace scheduler
 }  // namespace blink