Certificate Transparency: Discard entries pending auditing on network change

components/certificate_transparency/single_tree_tracker.cc

Index: components/certificate_transparency/single_tree_tracker.cc
diff --git a/components/certificate_transparency/single_tree_tracker.cc b/components/certificate_transparency/single_tree_tracker.cc
index 281231690f6a3257b61ed084a75ed8d45635d57b..ea76da96864490b5e8c74c490f8a85acd3ca0b02 100644
--- a/components/certificate_transparency/single_tree_tracker.cc
+++ b/components/certificate_transparency/single_tree_tracker.cc
@@ -221,9 +221,12 @@ SingleTreeTracker::SingleTreeTracker(
       weak_factory_(this) {
   memory_pressure_listener_.reset(new base::MemoryPressureListener(base::Bind(
       &SingleTreeTracker::OnMemoryPressure, base::Unretained(this))));
+  net::NetworkChangeNotifier::AddNetworkChangeObserver(this);
 }
 
-SingleTreeTracker::~SingleTreeTracker() {}
+SingleTreeTracker::~SingleTreeTracker() {
+  net::NetworkChangeNotifier::RemoveNetworkChangeObserver(this);
+}
 
 void SingleTreeTracker::OnSCTVerified(net::X509Certificate* cert,
                                       const SignedCertificateTimestamp* sct) {
@@ -326,6 +329,11 @@ void SingleTreeTracker::NewSTHObserved(const SignedTreeHead& sth) {
   ProcessPendingEntries();
 }
 
+void SingleTreeTracker::OnNetworkChanged(
+    net::NetworkChangeNotifier::ConnectionType type) {
+  pending_entries_.clear();
+}
+
 SingleTreeTracker::SCTInclusionStatus
 SingleTreeTracker::GetLogEntryInclusionStatus(
     net::X509Certificate* cert,