Lazily load API schemas from resource files and convert all APIs to features

chrome/common/extensions/features/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_FEATURE_H_
 #define CHROME_COMMON_EXTENSIONS_FEATURES_FEATURE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 120 matching lines @@
   static Platform GetCurrentPlatform();
 
   // Gets the Feature::Location value for the specified Manifest::Location.
   static Location ConvertLocation(Manifest::Location extension_location);
 
   virtual std::set<Context>* GetContexts() = 0;
 
   // Tests whether this is an internal API or not.
   virtual bool IsInternal() const = 0;
 
+  // Tests whether this Feature has a parent Feature.
+  virtual bool HasParent() const = 0;
+
   // Returns true if the feature is available to be parsed into a new extension
   // manifest.
   Availability IsAvailableToManifest(const std::string& extension_id,
                                      Manifest::Type type,
                                      Location location,
                                      int manifest_version) const {
     return IsAvailableToManifest(extension_id, type, location, manifest_version,
                                  GetCurrentPlatform());
   }
   virtual Availability IsAvailableToManifest(const std::string& extension_id,
@@ skipping 21 matching lines @@
   virtual bool IsIdInWhitelist(const std::string& extension_id) const = 0;
 
  protected:
   std::string name_;
   std::set<std::string> dependencies_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_FEATURES_FEATURE_H_