Move core features code to //extensions

chrome/common/extensions/features/base_feature_provider.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 CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_
-#define CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/memory/linked_ptr.h"
-#include "base/values.h"
-#include "chrome/common/extensions/features/simple_feature.h"
-#include "extensions/common/features/feature_provider.h"
-
-namespace extensions {
-
-// Reads Features out of a simple JSON file description.
-class BaseFeatureProvider : public FeatureProvider {
- public:
-  typedef SimpleFeature*(*FeatureFactory)();
-
-  // Creates a new BaseFeatureProvider. Pass null to |factory| to have the
-  // provider create plain old Feature instances.
-  BaseFeatureProvider(const base::DictionaryValue& root,
-                      FeatureFactory factory);
-  virtual ~BaseFeatureProvider();
-
-  // Gets a feature provider for a specific feature type, like "permission".
-  static FeatureProvider* GetByName(const std::string& name);
-
-  // Gets the feature |feature_name|, if it exists.
-  virtual Feature* GetFeature(const std::string& feature_name) const OVERRIDE;
-  virtual Feature* GetParent(Feature* feature) const OVERRIDE;
-  virtual std::vector<Feature*> GetChildren(const Feature& parent) const
-      OVERRIDE;
-
-  virtual const std::vector<std::string>& GetAllFeatureNames() const OVERRIDE;
-
- private:
-  typedef std::map<std::string, linked_ptr<Feature> > FeatureMap;
-  FeatureMap features_;
-
-  // Populated on first use.
-  mutable std::vector<std::string> feature_names_;
-
-  FeatureFactory factory_;
-};
-
-}  // namespace extensions
-
-#endif  // CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_