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 cab7b87810299f5b79c0700103b9cfd857b537ff..6314efbea497a66f12f36c1281d60ef03b698a90 100644
--- a/base/task_scheduler/scheduler_worker_pool_impl.h
+++ b/base/task_scheduler/scheduler_worker_pool_impl.h
@@ -102,6 +102,8 @@ 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;