Make Manifest/Permission Features Compose with Feature

chrome/common/extensions/features/simple_feature.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_SIMPLE_FEATURE_H_
 #define CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_H_
 
 #include <set>
 #include <string>
 
 #include "base/values.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/features/feature.h"
 
 namespace extensions {
 
 class ComplexFeature;
 
 class SimpleFeature : public Feature {
  public:
   SimpleFeature();
   SimpleFeature(const SimpleFeature& other);
+  SimpleFeature(Feature* feature);
   virtual ~SimpleFeature();
 
   std::set<std::string>* whitelist() { return &whitelist_; }
   std::set<Extension::Type>* extension_types() { return &extension_types_; }
 
   // Parses the JSON representation of a feature into the fields of this object.
   // Unspecified values in the JSON are not modified in the object. This allows
   // us to implement inheritance by parsing one value after another.
   void Parse(const DictionaryValue* value);
 
@@ skipping 55 matching lines @@
   int min_manifest_version_;
   int max_manifest_version_;
   chrome::VersionInfo::Channel channel_;
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionSimpleFeatureTest, Context);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_H_