Basic user access check for chromoting host.

remoting/host/host_config.h

 // Copyright (c) 2010 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_HOST_HOST_CONFIG_H_
 #define REMOTING_HOST_HOST_CONFIG_H_
 
 #include <string>
 
 #include "base/ref_counted.h"
@@ skipping 21 matching lines @@
  public:
   HostConfig() { };
   virtual ~HostConfig() { }
 
   virtual bool GetString(const std::string& path, std::string* out_value) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(HostConfig);
 };
 
 // MutableHostConfig extends HostConfig for mutability.
+//
+// TODO(sergeyu): Simplify this interface.
 class MutableHostConfig : public HostConfig {
  public:
   MutableHostConfig() { };
 
   // Update() must be used to update config values.
   // It acquires lock, calls the specified task, releases the lock and
   // then schedules the config to be written to storage.
   virtual void Update(Task* task) = 0;
 
   // SetString() updates specified config value. This methods must only
   // be called from task specified in Update().
   virtual void SetString(const std::string& path,
                          const std::string& in_value) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(MutableHostConfig);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_HOST_CONFIG_H_