Make Manifest/Permission Features Compose with Feature

chrome/common/extensions/features/simple_feature.cc

 // 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.
 
 #include "chrome/common/extensions/features/simple_feature.h"
 
 #include <map>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 163 matching lines @@
     : whitelist_(other.whitelist_),
       extension_types_(other.extension_types_),
       contexts_(other.contexts_),
       location_(other.location_),
       platform_(other.platform_),
       min_manifest_version_(other.min_manifest_version_),
       max_manifest_version_(other.max_manifest_version_),
       channel_(other.channel_) {
 }
 
+SimpleFeature::SimpleFeature(Feature* feature) {
+  SimpleFeature();
+}
+
 SimpleFeature::~SimpleFeature() {
 }
 
 bool SimpleFeature::Equals(const SimpleFeature& other) const {
   return whitelist_ == other.whitelist_ &&
       extension_types_ == other.extension_types_ &&
       contexts_ == other.contexts_ &&
       location_ == other.location_ &&
       platform_ == other.platform_ &&
       min_manifest_version_ == other.min_manifest_version_ &&
@@ skipping 168 matching lines @@
 Feature::Availability SimpleFeature::CreateAvailability(
     AvailabilityResult result, Extension::Type type) const {
   return Availability(result, GetAvailabilityMessage(result, type));
 }
 
 std::set<Feature::Context>* SimpleFeature::GetContexts() {
   return &contexts_;
 }
 
 }  // namespace extensions