Remove the need to have separate config for authentication.

remoting/host/composite_host_config.h

+// Copyright (c) 2012 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_COMPOSITE_HOST_CONFIG_H_
+#define REMOTING_HOST_COMPOSITE_HOST_CONFIG_H_
+
+#include "remoting/host/host_config.h"
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_vector.h"
+
+class FilePath;
+
+namespace remoting {
+
+// CompositeConfig reads multiple configuration files and merges them together.
+class CompositeHostConfig : public HostConfig {
+ public:
+  CompositeHostConfig();
+  virtual ~CompositeHostConfig();
+
+  // Add configuration file specified stored at |path|. Returns false if the
+  // file with the specified name doesn't exist or can't be opened. When the
+  // same parameter is present in more than one file priority is given to those
+  // that are added first.
+  bool AddConfigPath(const FilePath& path);
+
+  // HostConfig interface.
+  virtual bool GetString(const std::string& path,
+                         std::string* out_value) const OVERRIDE;
+  virtual bool GetBoolean(const std::string& path,
+                          bool* out_value) const OVERRIDE;
+
+ private:
+  ScopedVector<HostConfig> configs_;
+
+  DISALLOW_COPY_AND_ASSIGN(CompositeHostConfig);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_COMPOSITE_HOST_CONFIG_H_