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

chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc

Index: chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc
diff --git a/chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc b/chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc
index b64ebddc13b028f712169397fd12b0f2265262eb..92e6c59601e2a4dcaed014cd8a6ef4c6081c6b84 100644
--- a/chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc
+++ b/chrome/browser/metrics/desktop_engagement/desktop_engagement_service.cc
@@ -117,11 +117,6 @@ void DesktopEngagementService::EndSession() {
   in_session_ = false;
 
   base::TimeDelta delta = base::TimeTicks::Now() - session_start_;
-
-  // If timer is not running then session ended because of inactivity.
-  if (!timer_.IsRunning())
-    delta -= inactivity_timeout_;
-
   DVLOG(4) << "Logging session length of " << delta.InSeconds() << " seconds.";
 
   // Note: This metric is recorded separately for Android in