Fix a bug that could occasionaly cause setInterval to stop

components/scheduler/base/task_queue.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 COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_H_
 #define COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_H_
 
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/trace_event/trace_event.h"
 #include "components/scheduler/scheduler_export.h"
 
 namespace base {
 namespace trace_event {
 class BlameContext;
 }
 }
 
 namespace scheduler {
+class LazyNow;
 class TimeDomain;
 
 class SCHEDULER_EXPORT TaskQueue : public base::SingleThreadTaskRunner {
  public:
   TaskQueue() {}
 
   // Unregisters the task queue after which no tasks posted to it will run and
   // the TaskQueueManager's reference to it will be released soon.
   virtual void UnregisterTaskQueue() = 0;
 
@@ skipping 144 matching lines @@
   // that the tasks in the work queue, if any, are scheduled for execution.
   //
   // This function only needs to be called if automatic pumping is disabled.
   // By default automatic pumping is enabled for all queues. NOTE this must be
   // called on the thread this TaskQueue was created by.
   //
   // The |may_post_dowork| parameter controls whether or not PumpQueue calls
   // TaskQueueManager::MaybeScheduleImmediateWork.
   // TODO(alexclarke): Add a base::RunLoop observer so we can get rid of
   // |may_post_dowork|.
-  virtual void PumpQueue(bool may_post_dowork) = 0;
+  virtual void PumpQueue(LazyNow* lazy_now, bool may_post_dowork) = 0;
 
   // These functions can only be called on the same thread that the task queue
   // manager executes its tasks on.
   virtual void AddTaskObserver(
       base::MessageLoop::TaskObserver* task_observer) = 0;
   virtual void RemoveTaskObserver(
       base::MessageLoop::TaskObserver* task_observer) = 0;
 
   // Set the blame context which is entered and left while executing tasks from
   // this task queue. |blame_context| must be null or outlive this task queue.
@@ skipping 10 matching lines @@
 
  protected:
   ~TaskQueue() override {}
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueue);
 };
 
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_BASE_TASK_QUEUE_H_