Prevent redundant DoWorks due to canceled delayed tasks (v2)

third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc

Index: third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc
index db351c79c3fe52a81049d8c2679f2e014581a695..1c6836e0f515a7c9468c01749b35663884b8aa3d 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc
+++ b/third_party/WebKit/Source/platform/scheduler/base/task_queue_manager.cc
@@ -189,11 +189,13 @@ void TaskQueueManager::MaybeScheduleDelayedWork(
       main_thread_pending_wakeups_.end()) {
     return;
   }
-
   // De-duplicate DoWork posts.
   base::TimeTicks run_time = now + delay;
-  if (!main_thread_pending_wakeups_.insert(run_time).second)
+  if (!main_thread_pending_wakeups_.empty() &&
+      *main_thread_pending_wakeups_.begin() <= run_time) {
     return;
+  }
+  main_thread_pending_wakeups_.insert(run_time);
   delegate_->PostDelayedTask(
       from_here, base::Bind(&TaskQueueManager::DoWork,
                             weak_factory_.GetWeakPtr(), run_time, true),