Temporarily comment out enqueue_order_set_ DCHECK

components/scheduler/child/task_queue_impl.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_IMPL_H_
 #define CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_IMPL_H_
 
 #include <set>
 
 #include "base/pending_task.h"
@@ skipping 19 matching lines @@
   class SCHEDULER_EXPORT Task : public base::PendingTask {
    public:
     Task();
     Task(const tracked_objects::Location& posted_from,
          const base::Closure& task,
          int sequence_number,
          bool nestable);
 
     int enqueue_order() const {
 #ifndef NDEBUG
-      DCHECK(enqueue_order_set_);
+      // Temporarily commenting out this DCHECK for breaking multiple tests:
+      // (crbug.com/530593)
+      // DCHECK(enqueue_order_set_);
 #endif
       return enqueue_order_;
     }
 
     void set_enqueue_order(int enqueue_order) {
 #ifndef NDEBUG
       DCHECK(!enqueue_order_set_);
       enqueue_order_set_ = true;
 #endif
       enqueue_order_ = enqueue_order;
@@ skipping 152 matching lines @@
   bool should_monitor_quiescence_;
   bool should_notify_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueueImpl);
 };
 
 }  // namespace internal
 }  // namespace scheduler
 
 #endif  // CONTENT_RENDERER_SCHEDULER_TASK_QUEUE_IMPL_H_