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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
@@ skipping 120 matching lines @@
                                    const base::PendingTask& task) override;
 
   // TaskTimeObserver implementation:
   void WillProcessTask(TaskQueue* task_queue, double start_time) override;
   void DidProcessTask(TaskQueue* task_queue,
                       double start_time,
                       double end_time) override;
   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();
   scoped_refptr<TaskQueue> LoadingTaskQueue();
   scoped_refptr<TaskQueue> TimerTaskQueue();
 
   // Returns a new loading task queue. This queue is intended for tasks related
   // to resource dispatch, foreground HTML parsing, etc...
   scoped_refptr<TaskQueue> NewLoadingTaskQueue(TaskQueue::QueueType queue_type);
 
@@ skipping 391 matching lines @@
   CompositorThreadOnly compositor_thread_only_;
   CompositorThreadOnly& GetCompositorThreadOnly() {
     compositor_thread_only_.CheckOnValidThread();
     return compositor_thread_only_;
   }
 
   PollableThreadSafeFlag policy_may_need_update_;
 
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
+  base::TimeTicks uma_last_report_window_start_time_;

[tdresser, 2017/05/11 13:52:45]

Let's make this be a bit more explicit.
Maybe uma_last_queueing_time_report_window_start_time_?

[Liquan (Max) Gu, 2017/05/11 15:14:13]

Thanks! it's clearer.

+
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_