Pull out common code from client and host versions of LogToServer

remoting/client/log_to_server_client.h

Index: remoting/client/log_to_server_client.h
diff --git a/remoting/client/log_to_server_client.h b/remoting/client/log_to_server_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..b8a1b33af90b89a6eaf0916c0d6a41830d12173f
--- /dev/null
+++ b/remoting/client/log_to_server_client.h
@@ -0,0 +1,53 @@
+// 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_LOG_TO_SERVER_CLIENT_H_
+#define REMOTING_CLIENT_LOG_TO_SERVER_CLIENT_H_
+
+#include "base/time/time.h"
+#include "remoting/jingle_glue/log_to_server.h"
+#include "remoting/protocol/connection_to_host.h"
+#include "remoting/protocol/errors.h"
+
+namespace remoting {
+
+class ChromotingStats;
+
+// LogToServerClient sends client log entries to a server.
+// The contents of the log entries are described in server_log_entry_client.cc.
+// They do not contain any personally identifiable information.
+class LogToServerClient : public LogToServer {
+ public:
+  LogToServerClient(ServerLogEntry::Mode mode,
+                    SignalStrategy* signal_strategy,
+                    const std::string& directory_bot_jid);
+  virtual ~LogToServerClient() OVERRIDE;
+
+  void LogSessionStateChange(protocol::ConnectionToHost::State state,
+                             protocol::ErrorCode error);
+  void LogStatistics(remoting::ChromotingStats* statistics);
+
+ private:
+  // Generates a new random session ID.
+  void GenerateSessionId();
+
+  // Expire the session ID if the maximum duration has been exceeded.
+  void MaybeExpireSessionId();
+
+  // A randomly generated session ID to be attached to log messages. This
+  // is regenerated at the start of a new session.
+  std::string session_id_;
+
+  // Start time of the session.
+  base::TimeTicks session_start_time_;
+
+  // Time when the session ID was generated.
+  base::TimeTicks session_id_generation_time_;
+
+  DISALLOW_COPY_AND_ASSIGN(LogToServerClient);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_LOG_TO_SERVER_CLIENT_H_