Domain Reliability: Expire queued beacons after 1 hour.

components/domain_reliability/context.cc

Index: components/domain_reliability/context.cc
diff --git a/components/domain_reliability/context.cc b/components/domain_reliability/context.cc
index 8cae5a7fbd2d021add2e5ae8552d260944a562f9..a5c0e1977983ecc91cd571ae2b719aa76cd083ac 100644
--- a/components/domain_reliability/context.cc
+++ b/components/domain_reliability/context.cc
@@ -154,6 +154,10 @@ void DomainReliabilityContext::ScheduleUpload(
 }
 
 void DomainReliabilityContext::StartUpload() {
+  RemoveExpiredBeacons();
+  if (beacons_.empty())
+    return;
+
   MarkUpload();
 
   size_t collector_index = scheduler_.OnUploadStart();
@@ -266,4 +270,11 @@ void DomainReliabilityContext::RemoveOldestBeacon() {
     --uploading_beacons_size_;
 }
 
+void DomainReliabilityContext::RemoveExpiredBeacons() {
+  base::TimeTicks now = time_->NowTicks();
+  const base::TimeDelta kMaxAge = base::TimeDelta::FromHours(1);

[Randy Smith (Not in Mondays), 2016/11/04 16:06:29]

Defined constant somewhere?

+  while (!beacons_.empty() && now - beacons_.front()->start_time >= kMaxAge)
+    beacons_.pop_front();
+}
+
 }  // namespace domain_reliability