Plumb Task Scheduler Histograms to the Task Scheduler Internals Page

base/task_scheduler/task_scheduler_impl.cc

Index: base/task_scheduler/task_scheduler_impl.cc
diff --git a/base/task_scheduler/task_scheduler_impl.cc b/base/task_scheduler/task_scheduler_impl.cc
index 70a71baf7ce45d9ab1ce3632071b863f9cc40b11..346fdb1a2d9301ac3b600fe1c2eab4aa73b453a3 100644
--- a/base/task_scheduler/task_scheduler_impl.cc
+++ b/base/task_scheduler/task_scheduler_impl.cc
@@ -9,6 +9,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ptr_util.h"
+#include "base/metrics/histogram_base.h"
 #include "base/task_scheduler/scheduler_service_thread.h"
 #include "base/task_scheduler/scheduler_worker_pool_params.h"
 #include "base/task_scheduler/sequence_sort_key.h"
@@ -52,6 +53,14 @@ scoped_refptr<TaskRunner> TaskSchedulerImpl::CreateTaskRunnerWithTraits(
       traits, execution_mode);
 }
 
+std::vector<const HistogramBase*> TaskSchedulerImpl::GetHistograms() const {
+  std::vector<const HistogramBase*> histograms;
+  for (const auto& worker_pool : worker_pools_) {

[fdoray, 2016/10/18 16:50:25]

no braces

+    worker_pool->ReportHistograms(&histograms);
+  }
+  return histograms;
+}
+
 void TaskSchedulerImpl::Shutdown() {
   // TODO(fdoray): Increase the priority of BACKGROUND tasks blocking shutdown.
   task_tracker_.Shutdown();