EQT: Change Expected Queuing Time from per-second to sliding window

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
index a9c0be3a05e389c0296a5391829dc90a1a9b6fb2..266cf3ef29e7588a0ce8b729d8706903f752c4d8 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h
@@ -138,7 +138,9 @@ class PLATFORM_EXPORT RendererSchedulerImpl
   void OnBeginNestedMessageLoop() override;
 
   // QueueingTimeEstimator::Client implementation:
-  void OnQueueingTimeForWindowEstimated(base::TimeDelta queueing_time) override;
+  void OnQueueingTimeForWindowEstimated(
+      base::TimeDelta queueing_time,
+      base::TimeTicks window_start_time) override;
 
   scoped_refptr<TaskQueue> DefaultTaskQueue();
   scoped_refptr<TaskQueue> CompositorTaskQueue();
@@ -550,6 +552,8 @@ class PLATFORM_EXPORT RendererSchedulerImpl
 
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
+  base::TimeTicks uma_last_queueing_time_report_window_start_time_;

[Sami, 2017/05/12 16:06:27]

Please move this to the MainThreadOnly struct to make the threading constrains a
little more obvious.

[Liquan (Max) Gu, 2017/05/12 18:25:45]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };