Reporting: Remove persistence for now.

net/reporting/reporting_garbage_collector.cc

Index: net/reporting/reporting_garbage_collector.cc
diff --git a/net/reporting/reporting_garbage_collector.cc b/net/reporting/reporting_garbage_collector.cc
index 76dbf3ad0e4401c5d7db7747db4c2b54012065af..b6486b4cc0438ac742dcdd997f7c5b97feffd3f3 100644
--- a/net/reporting/reporting_garbage_collector.cc
+++ b/net/reporting/reporting_garbage_collector.cc
@@ -24,28 +24,22 @@ class ReportingGarbageCollectorImpl : public ReportingGarbageCollector,
                                       public ReportingObserver {
  public:
   ReportingGarbageCollectorImpl(ReportingContext* context)
-      : context_(context), timer_(base::MakeUnique<base::OneShotTimer>()) {}
+      : context_(context), timer_(base::MakeUnique<base::OneShotTimer>()) {
+    context_->AddObserver(this);
+  }
 
   // ReportingGarbageCollector implementation:
 
   ~ReportingGarbageCollectorImpl() override {
-    DCHECK(context_->initialized());
     context_->RemoveObserver(this);
   }
 
-  void Initialize() override {
-    context_->AddObserver(this);
-    CollectGarbage();
-  }
-
   void SetTimerForTesting(std::unique_ptr<base::Timer> timer) override {
-    DCHECK(!context_->initialized());
     timer_ = std::move(timer);
   }
 
   // ReportingObserver implementation:
   void OnCacheUpdated() override {
-    DCHECK(context_->initialized());
     if (!timer_->IsRunning())
       StartTimer();
   }