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

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc

Index: third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc
diff --git a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc
index f2f6239d3c1d6061ea0127e300209ff10c71f3ad..5ab38c32e8f45da133be1ede4652a84e52ea340d 100644
--- a/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc
+++ b/third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl_unittest.cc
@@ -3801,6 +3801,32 @@ TEST_F(RendererSchedulerImplTest, UnresponsiveMainThread) {
       scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));
 }
 
+// As |responsiveness_threshold| == expected queueing time threshold == 0.2s,
+// for a task shorter than the length of the window (1s), the critical value of
+// the length of task x can be calculated by (x/2) * (x/1) = 0.2, in which x =
+// 0.6324.
+TEST_F(RendererSchedulerImplTest, UnresponsiveMainThreadAboveThreshold) {
+  EXPECT_FALSE(
+      scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));
+
+  AdvanceTimeWithTask(0.64);
+  EXPECT_TRUE(
+      scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));
+}
+
+// As |responsiveness_threshold| == expected queueing time threshold == 0.2s,
+// for a task shorter than the length of the window (1s), the critical value of
+// the length of task x can be calculated by (x/2) * (x/1) = 0.2, in which x =
+// 0.6324.
+TEST_F(RendererSchedulerImplTest, ResponsiveMainThreadBelowThreshold) {
+  EXPECT_FALSE(
+      scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));
+
+  AdvanceTimeWithTask(0.63);
+  EXPECT_FALSE(
+      scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));
+}
+
 TEST_F(RendererSchedulerImplTest, ResponsiveMainThreadDuringTask) {
   EXPECT_FALSE(
       scheduler_->MainThreadSeemsUnresponsive(responsiveness_threshold()));