Run clang-modernize -use-nullptr over src/extensions/.

extensions/common/api/sockets/sockets_manifest_permission.cc

Index: extensions/common/api/sockets/sockets_manifest_permission.cc
diff --git a/extensions/common/api/sockets/sockets_manifest_permission.cc b/extensions/common/api/sockets/sockets_manifest_permission.cc
index f695494e7b7f68ced683dc4dfd01ccd92f49c4a9..7124b80e0f8b7a5d021590669d312b9a9b37fba4 100644
--- a/extensions/common/api/sockets/sockets_manifest_permission.cc
+++ b/extensions/common/api/sockets/sockets_manifest_permission.cc
@@ -202,21 +202,21 @@ scoped_ptr<base::Value> SocketsManifestPermission::ToValue() const {
   if (sockets.udp->bind->as_strings->size() == 0 &&
       sockets.udp->send->as_strings->size() == 0 &&
       sockets.udp->multicast_membership->as_strings->size() == 0) {
-    sockets.udp.reset(NULL);
+    sockets.udp.reset(nullptr);
   }
 
   sockets.tcp.reset(new Sockets::Tcp());
   SetHostPatterns(
       sockets.tcp->connect, this, SocketPermissionRequest::TCP_CONNECT);
   if (sockets.tcp->connect->as_strings->size() == 0) {
-    sockets.tcp.reset(NULL);
+    sockets.tcp.reset(nullptr);
   }
 
   sockets.tcp_server.reset(new Sockets::TcpServer());
   SetHostPatterns(
       sockets.tcp_server->listen, this, SocketPermissionRequest::TCP_LISTEN);
   if (sockets.tcp_server->listen->as_strings->size() == 0) {
-    sockets.tcp_server.reset(NULL);
+    sockets.tcp_server.reset(nullptr);
   }
 
   return scoped_ptr<base::Value>(sockets.ToValue().release()).Pass();