Make sure read/write buffer alive in TCPSocketLibevent.

net/socket/tcp_socket_libevent.h

Index: net/socket/tcp_socket_libevent.h
diff --git a/net/socket/tcp_socket_libevent.h b/net/socket/tcp_socket_libevent.h
index 59978aa3bb3969b256bc73cd41166566121e3da9..add22dd3bcf2032e246fc1fdeb4f05e98386cc84 100644
--- a/net/socket/tcp_socket_libevent.h
+++ b/net/socket/tcp_socket_libevent.h
@@ -148,12 +148,16 @@ class NET_EXPORT TCPSocketLibevent {
   void LogConnectBegin(const AddressList& addresses) const;
   void LogConnectEnd(int net_error) const;
 
-  void ReadCompleted(IOBuffer* buf,
+  // Binds with scoped_refptr<IOBuffer> instead of IOBuffer* to make sure buf
+  // alive when this callback is called.
+  void ReadCompleted(scoped_refptr<IOBuffer> buf,
                      const CompletionCallback& callback,
                      int rv);
   int HandleReadCompleted(IOBuffer* buf, int rv);
 
-  void WriteCompleted(IOBuffer* buf,
+  // Binds with scoped_refptr<IOBuffer> instead of IOBuffer* to make sure buf
+  // alive when this callback is called.
+  void WriteCompleted(scoped_refptr<IOBuffer> buf,

[Ryan Sleevi, 2014/07/11 18:13:35]

scoped-refptrs should always be const-ref

[byungchul, 2014/07/11 18:58:18]

Done.

                       const CompletionCallback& callback,
                       int rv) const;
   int HandleWriteCompleted(IOBuffer* buf, int rv) const;