DCHECK tasks posted by TaskRunner::PostTask

base/threading/worker_pool_posix.cc

Index: base/threading/worker_pool_posix.cc
diff --git a/base/threading/worker_pool_posix.cc b/base/threading/worker_pool_posix.cc
index e0efa463f75dcbbaa0ccf20dfc6be5c0ab73f6fe..5d0689bfa0c5767967769ca7c99c493cc457567c 100644
--- a/base/threading/worker_pool_posix.cc
+++ b/base/threading/worker_pool_posix.cc
@@ -146,6 +146,8 @@ void PosixDynamicThreadPool::PostTask(
 }
 
 void PosixDynamicThreadPool::AddTask(PendingTask* pending_task) {
+  DCHECK(pending_task);
+  DCHECK(pending_task->task);
   AutoLock locked(lock_);
 
   pending_tasks_.push(std::move(*pending_task));