Virtual destructors should have virtual keyword.

net/tools/flip_server/sm_connection.cc

Index: net/tools/flip_server/sm_connection.cc
diff --git a/net/tools/flip_server/sm_connection.cc b/net/tools/flip_server/sm_connection.cc
index b57c5a9bd3527c4aa745a3bc158e28ee4add6e99..f47b502d0d7e2bfc0bec889b5737f59dd5962416 100644
--- a/net/tools/flip_server/sm_connection.cc
+++ b/net/tools/flip_server/sm_connection.cc
@@ -23,6 +23,11 @@ namespace net {
 // static
 bool SMConnection::force_spdy_ = false;
 
+DataFrame::~DataFrame() {
+  if (delete_when_done)
+    delete[] data;
+}
+
 SMConnection::SMConnection(EpollServer* epoll_server,
                            SSLState* ssl_state,
                            MemoryCache* memory_cache,
@@ -659,5 +664,3 @@ SMConnection* SMConnection::NewSMConnection(EpollServer* epoll_server,
 }
 
 }  // namespace net
-
-