Plumb Task Scheduler Histograms to the Task Scheduler Internals Page

base/task_scheduler/scheduler_worker_pool_impl.h

Index: base/task_scheduler/scheduler_worker_pool_impl.h
diff --git a/base/task_scheduler/scheduler_worker_pool_impl.h b/base/task_scheduler/scheduler_worker_pool_impl.h
index a621f797a53473b2096170a07689e456d5c3f2de..0bea1a4a25b930356dc6d8f709c78f18f551913b 100644
--- a/base/task_scheduler/scheduler_worker_pool_impl.h
+++ b/base/task_scheduler/scheduler_worker_pool_impl.h
@@ -98,6 +98,8 @@ class BASE_EXPORT SchedulerWorkerPoolImpl : public SchedulerWorkerPool {
     return num_tasks_between_waits_histogram_;
   }
 
+  void GetHistograms(std::vector<const HistogramBase*>* histograms) const;
+
  private:
   class SchedulerSingleThreadTaskRunner;
   class SchedulerWorkerDelegateImpl;