Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/config.h

-// Copyright (c) 2013 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 TOOLS_GN_CONFIG_H_
-#define TOOLS_GN_CONFIG_H_
-
-#include "base/compiler_specific.h"
-#include "tools/gn/config_values.h"
-#include "tools/gn/item.h"
-
-class Err;
-class ItemTree;
-class LocationRange;
-class Settings;
-
-// Represents a named config in the dependency graph.
-class Config : public Item {
- public:
-  Config(const Label& label);
-  virtual ~Config();
-
-  virtual Config* AsConfig() OVERRIDE;
-  virtual const Config* AsConfig() const OVERRIDE;
-
-  ConfigValues& config_values() { return config_values_; }
-  const ConfigValues& config_values() const { return config_values_; }
-
-  // Gets or creates a config.
-  //
-  // This is like the TargetManager is for Targets, but Configs are so much
-  // simpler that this one function is all we need.
-  static Config* GetConfig(const Settings* settings,
-                           const LocationRange& specified_from_here,
-                           const Label& label,
-                           Item* dep_from,
-                           Err* err);
-
- private:
-  ConfigValues config_values_;
-
-  DISALLOW_COPY_AND_ASSIGN(Config);
-};
-
-#endif  // TOOLS_GN_CONFIG_H_