Revert of Discount for inactivity timeout for recording session length. (https://codereview.chromiu…

chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc

Index: chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc
diff --git a/chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc b/chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc
index a041fa6dc106771df5be1fd13c44f12770ff7a71..4670e22f60092f77f8783393827f68f09cfc08d8 100644
--- a/chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc
+++ b/chrome/browser/metrics/desktop_engagement/desktop_engagement_service_unittest.cc
@@ -147,26 +147,3 @@ TEST(DesktopEngagementServiceTest, TestAudioEvent) {
   EXPECT_FALSE(instance.is_audio_playing());
   histogram_tester.ExpectTotalCount("Session.TotalDuration", 1);
 }
-
-TEST(DesktopEngagementServiceTest, TestTimeoutDiscount) {
-  base::MessageLoop loop(base::MessageLoop::TYPE_DEFAULT);
-  base::HistogramTester histogram_tester;
-
-  MockDesktopEngagementService instance;
-  instance.SetInactivityTimeoutForTesting(2);
-
-  instance.OnVisibilityChanged(true);
-  instance.OnUserEvent();
-  histogram_tester.ExpectTotalCount("Session.TotalDuration", 0);
-
-  // Wait until the session expires.
-  while (!instance.is_timeout()) {
-    base::RunLoop().RunUntilIdle();
-  }
-
-  histogram_tester.ExpectTotalCount("Session.TotalDuration", 1);
-
-  // The recorded value should be in the 0 bucket even though inactivity timeout
-  // is 2 seconds.
-  histogram_tester.ExpectUniqueSample("Session.TotalDuration", 0, 1);
-}