CHECK tasks posted by TaskRunner::PostTask

base/task_scheduler/sequence.cc

Index: base/task_scheduler/sequence.cc
diff --git a/base/task_scheduler/sequence.cc b/base/task_scheduler/sequence.cc
index 9867c1dfd20d07d43f8bb0f5efc370757d7659bb..4db5478fe4a82e7893d047b1e53fa8906c93eb32 100644
--- a/base/task_scheduler/sequence.cc
+++ b/base/task_scheduler/sequence.cc
@@ -16,7 +16,10 @@ Sequence::Sequence() = default;
 
 bool Sequence::PushTask(std::unique_ptr<Task> task) {
   DCHECK(task);
-  DCHECK(task->task);
+
+  // Use CHECK instead of DCHECK to crash earlier. See http://crbug.com/711167
+  // for details.
+  CHECK(task->task);
   DCHECK(task->sequenced_time.is_null());
   task->sequenced_time = base::TimeTicks::Now();