Report expected task queueing time via UMA

components/scheduler/base/time_domain.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_TIME_DOMAIN_H_
 #define COMPONENTS_SCHEDULER_BASE_TIME_DOMAIN_H_
 
 #include <map>
 
 #include "base/callback.h"
@@ skipping 86 matching lines @@
 
   // Removes |queue| from the set of task queues that UpdateWorkQueues calls
   // UpdateWorkQueue on.
   void UnregisterAsUpdatableTaskQueue(internal::TaskQueueImpl* queue);
 
   // Removes |queue| from all internal data structures.
   void UnregisterQueue(internal::TaskQueueImpl* queue);
 
   // Updates active queues associated with this TimeDomain.
   void UpdateWorkQueues(bool should_trigger_wakeup,
-                        const internal::TaskQueueImpl::Task* previous_task);
+                        const internal::TaskQueueImpl::Task* previous_task,
+                        LazyNow lazy_now);
 
   // Called by the TaskQueueManager when the TimeDomain is registered.
   virtual void OnRegisterWithTaskQueueManager(
       TaskQueueManager* task_queue_manager) = 0;
 
   // The implementaion will secedule task processing to run with |delay| with
   // respect to the TimeDomain's time source.  Always called on the main thread.
   // NOTE this is only called by ScheduleDelayedWork if the scheduled runtime
   // is sooner than any previously sheduled work or if there is no other
   // scheduled work.
@@ skipping 36 matching lines @@
   Observer* observer_;  // NOT OWNED.
 
   base::ThreadChecker main_thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(TimeDomain);
 };
 
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_BASE_TIME_DOMAIN_H_