Certificate Transparency: New component for obtaining fresh STHs.

net/cert/sth_distributor.cc

+// Copyright 2016 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/cert/sth_distributor.h"
+
+#include "net/cert/signed_tree_head.h"
+
+namespace net {
+
+namespace ct {
+
+STHDistributor::STHDistributor()
+    : observer_list_(base::ObserverList<STHObserver>::NOTIFY_EXISTING_ONLY) {}
+
+STHDistributor::~STHDistributor() {}
+
+void STHDistributor::NewSTHObserved(const SignedTreeHead& sth) {
+  FOR_EACH_OBSERVER(STHObserver, observer_list_, NewSTHObserved(sth));
+}
+
+void STHDistributor::RegisterObserver(STHObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void STHDistributor::UnregisterObserver(STHObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+}  // namespace ct
+
+}  // namespace net