From eb02a76b364ba9fae4ed325ae91eb8edc9507341 Mon Sep 17 00:00:00 2001
From: Sebastian Jansson <srte@webrtc.org>
Date: Mon, 15 Apr 2019 16:20:44 +0200
Subject: [PATCH] Allow negative delta in EventRateCounter.

Bug: webrtc:10365
Change-Id: I13192d1e179ef5637210cfea3e67010d00117957
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133025
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27637}
---
 test/scenario/performance_stats.cc | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/test/scenario/performance_stats.cc b/test/scenario/performance_stats.cc
index 3ff66cd10c..3471cbe0e1 100644
--- a/test/scenario/performance_stats.cc
+++ b/test/scenario/performance_stats.cc
@@ -14,13 +14,10 @@
 namespace webrtc {
 namespace test {
 void EventRateCounter::AddEvent(Timestamp event_time) {
-  if (first_time_.IsInfinite()) {
-    first_time_ = event_time;
-  } else {
-    RTC_DCHECK(event_time >= last_time_);
+  if (first_time_.IsFinite())
     interval_.AddSample(event_time - last_time_);
-  }
-  last_time_ = event_time;
+  first_time_ = std::min(first_time_, event_time);
+  last_time_ = std::max(last_time_, event_time);
   event_count_++;
 }