Remove worker pool names from TaskScheduler.TaskLatency.* histograms.

base/task_scheduler/scheduler_worker.cc

Index: base/task_scheduler/scheduler_worker.cc
diff --git a/base/task_scheduler/scheduler_worker.cc b/base/task_scheduler/scheduler_worker.cc
index 5853bf6131e46e67ea8492d1351ef0e53e7338de..9a45a098e908e6bd4b49ae208fe6f2cd31b2942a 100644
--- a/base/task_scheduler/scheduler_worker.cc
+++ b/base/task_scheduler/scheduler_worker.cc
@@ -79,10 +79,8 @@ class SchedulerWorker::Thread : public PlatformThread::Delegate {
       }
 
       std::unique_ptr<Task> task = sequence->TakeTask();

[gab, 2017/01/05 19:25:46]

inline

[fdoray, 2017/01/05 20:13:37]

Done.

-      const TaskPriority task_priority = task->traits.priority();
-      const TimeDelta task_latency = TimeTicks::Now() - task->sequenced_time;
       if (outer_->task_tracker_->RunTask(std::move(task), sequence->token()))
-        outer_->delegate_->DidRunTaskWithPriority(task_priority, task_latency);
+        outer_->delegate_->DidRunTask();
 
       const bool sequence_became_empty = sequence->Pop();