Pull out common code from client and host versions of ServerLogEntry.

remoting/client/server_log_entry_client.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_CLIENT_SERVER_LOG_ENTRY_CLIENT_H_
+#define REMOTING_CLIENT_SERVER_LOG_ENTRY_CLIENT_H_
+
+#include "base/time/time.h"
+#include "remoting/protocol/connection_to_host.h"
+#include "remoting/protocol/errors.h"
+
+namespace remoting {
+
+class ChromotingStats;
+
+namespace protocol {
+class ServerLogEntry;
+}  // namespace protocol
+
+// Constructs a log entry for a session state change.

[rmsousa, 2014/05/20 00:54:41]

Nit: I think you could inherit from ServerLogEntry, and make these MakeLogEntry*
statics and the Add* member methods. Not sure if it would look cleaner.

(same for the host side)

[Lambros, 2014/05/20 01:13:35]

I thought about that, but I'm not sure. The problem is that this class is a
wrapper around a std::map, and is passed by value and stored in a std::vector.
People might be tempted to add extra fields to the derived class, which might
cause problems with casting between base/derived types.

+scoped_ptr<protocol::ServerLogEntry> MakeLogEntryForSessionStateChange(
+    protocol::ConnectionToHost::State state,
+    protocol::ErrorCode error);
+
+// Constructs a log entry for reporting statistics.
+scoped_ptr<protocol::ServerLogEntry> MakeLogEntryForStatistics(
+    ChromotingStats* statistics);
+
+// Constructs a log entry for reporting session ID is old.
+scoped_ptr<protocol::ServerLogEntry> MakeLogEntryForSessionIdOld(
+    const std::string& session_id);
+
+// Constructs a log entry for reporting session ID is old.
+scoped_ptr<protocol::ServerLogEntry> MakeLogEntryForSessionIdNew(
+    const std::string& session_id);
+
+void AddClientFieldsToLogEntry(protocol::ServerLogEntry* entry);
+void AddSessionIdToLogEntry(protocol::ServerLogEntry* entry,
+                            const std::string& id);
+void AddSessionDurationToLogEntry(protocol::ServerLogEntry* entry,
+                                  base::TimeDelta duration);
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_SERVER_LOG_ENTRY_CLIENT_H_