bootstat: Don't log time_since_factory_reset on device reset.
The zero value is meaningless and skews the histogram buckets.
Bug: 27477664
Change-Id: Idd641aa3005819905a2ecf664d2a5781dbbff59b
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index c199190..bcc8abd 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -170,7 +170,9 @@
// use this signal to mark the time of the factory reset.
if (!boot_event_store.GetBootEvent("factory_reset", &record)) {
boot_event_store.AddBootEventWithValue("factory_reset", current_time_utc);
- boot_event_store.AddBootEventWithValue("time_since_factory_reset", 0);
+
+ // Don't log the time_since_factory_reset until some time has elapsed.
+ // The data is not meaningful yet and skews the histogram buckets.
return;
}