DCHECK tasks posted by TaskRunner::PostTask

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

Index: third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.cc b/third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.cc
index b2546fc574d45fd0ff580e57d6bc6fc6c4015f9b..7ee64d740f77713b9bb1b9484387d0698358c4c0 100644
--- a/third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.cc
+++ b/third_party/WebKit/Source/platform/scheduler/base/task_queue_impl.cc
@@ -274,6 +274,8 @@ bool TaskQueueImpl::PostDelayedTaskImpl(
 
 void TaskQueueImpl::PushOntoDelayedIncomingQueueFromMainThread(
     Task pending_task, base::TimeTicks now) {
+  CHECK(pending_task.task);
+
   base::TimeTicks delayed_run_time = pending_task.delayed_run_time;
   main_thread_only().task_queue_manager->DidQueueTask(pending_task);
   main_thread_only().delayed_incoming_queue.push(std::move(pending_task));
@@ -293,6 +295,8 @@ void TaskQueueImpl::PushOntoDelayedIncomingQueueFromMainThread(
 }
 
 void TaskQueueImpl::PushOntoDelayedIncomingQueueLocked(Task pending_task) {
+  CHECK(pending_task.task);
+
   any_thread().task_queue_manager->DidQueueTask(pending_task);
 
   int thread_hop_task_sequence_number =
@@ -333,6 +337,8 @@ void TaskQueueImpl::PushOntoImmediateIncomingQueueLocked(
     base::TimeTicks desired_run_time,
     EnqueueOrder sequence_number,
     bool nestable) {
+  CHECK(task);
+
   // If the |immediate_incoming_queue| is empty we need a DoWork posted to make
   // it run.
   if (any_thread().immediate_incoming_queue.empty()) {