scheduler: Reset pending input event count on navigation

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

 // Copyright 2015 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.
 
 #include "platform/scheduler/renderer/user_model.h"
 
 #include "base/test/simple_test_tick_clock.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 234 matching lines @@
   base::TimeDelta delta(base::TimeDelta::FromMilliseconds(
       UserModel::kMedianGestureDurationMillis * 2));
   clock_->Advance(delta);
 
   base::TimeDelta prediction_valid_duration;
   EXPECT_FALSE(user_model_->IsGestureExpectedToContinue(
       clock_->NowTicks(), &prediction_valid_duration));
   EXPECT_EQ(base::TimeDelta(), prediction_valid_duration);
 }
 
+TEST_F(UserModelTest, ResetPendingInputCount) {
+  user_model_->DidStartProcessingInputEvent(
+      blink::WebInputEvent::Type::GestureScrollBegin, clock_->NowTicks());
+  EXPECT_EQ(priority_escalation_after_input_duration(),
+            user_model_->TimeLeftInUserGesture(clock_->NowTicks()));
+  user_model_->Reset(clock_->NowTicks());
+  EXPECT_EQ(base::TimeDelta(),
+            user_model_->TimeLeftInUserGesture(clock_->NowTicks()));
+}
+
 }  // namespace scheduler
 }  // namespace blink