Reporting: Set up in ProfileImplIOData.

net/reporting/reporting_garbage_collector.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/reporting/reporting_garbage_collector.h"
 
 #include <vector>
 
 #include "base/memory/ptr_util.h"
 #include "base/time/tick_clock.h"
@@ skipping 22 matching lines @@
   ~ReportingGarbageCollectorImpl() override {
     context_->RemoveObserver(this);
   }
 
   void SetTimerForTesting(std::unique_ptr<base::Timer> timer) override {
     timer_ = std::move(timer);
   }
 
   // ReportingObserver implementation:
   void OnCacheUpdated() override {
-    if (!timer_->IsRunning())
-      StartTimer();
-  }
+    if (timer_->IsRunning())
+      return;
 
- private:
-  void StartTimer() {
     timer_->Start(FROM_HERE, context_->policy().garbage_collection_interval,
                   base::Bind(&ReportingGarbageCollectorImpl::CollectGarbage,
                              base::Unretained(this)));
   }
 
+ private:
   void CollectGarbage() {
     base::TimeTicks now = context_->tick_clock()->NowTicks();
     const ReportingPolicy& policy = context_->policy();
 
     std::vector<const ReportingReport*> all_reports;
     context_->cache()->GetReports(&all_reports);
 
     std::vector<const ReportingReport*> reports_to_remove;
     for (const ReportingReport* report : all_reports) {
       if (now - report->queued >= policy.max_report_age ||
@@ skipping 16 matching lines @@
 
 // static
 std::unique_ptr<ReportingGarbageCollector> ReportingGarbageCollector::Create(
     ReportingContext* context) {
   return base::MakeUnique<ReportingGarbageCollectorImpl>(context);
 }
 
 ReportingGarbageCollector::~ReportingGarbageCollector() {}
 
 }  // namespace net