Reconnect P2P socket dispatcher if network service dies.

Bug: chromium:1113227
Change-Id: Ifc8e856fde4cf4eee25149f0a1e86a3cad71ea83
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2344747
Commit-Queue: Taylor <deadbeef@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797125}

third_party/blink/renderer/platform/p2p/socket_dispatcher.cc

@@ -110,6 +110,18 @@ void P2PSocketDispatcher::RequestNetworkEventsIfNecessary() {
 void P2PSocketDispatcher::OnConnectionError() {
   base::AutoLock lock(p2p_socket_manager_lock_);
   p2p_socket_manager_.reset();
+  // Attempt to reconnect in case the network service crashed in his being
+  // restarted.
+  PostCrossThreadTask(
+      *main_task_runner_.get(), FROM_HERE,
+      CrossThreadBindOnce(&P2PSocketDispatcher::ReconnectP2PSocketManager,
+                          scoped_refptr<P2PSocketDispatcher>(this)));
+}
+
+void P2PSocketDispatcher::ReconnectP2PSocketManager() {
+  network_notification_client_receiver_.reset();
+  GetP2PSocketManager()->StartNetworkNotifications(
+      network_notification_client_receiver_.BindNewPipeAndPassRemote());
 }
 
 }  // namespace blink

third_party/blink/renderer/platform/p2p/socket_dispatcher.h

@@ -82,6 +82,7 @@ class PLATFORM_EXPORT P2PSocketDispatcher
   void RequestNetworkEventsIfNecessary();
 
   void OnConnectionError();
+  void ReconnectP2PSocketManager();
 
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;