Add support for command line switches to Features, and as proof that it works,

extensions/common/features/simple_feature.h

 // Copyright 2014 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 EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_H_
 #define EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 23 matching lines @@
   // nor should it really have any reason to access the SimpleFeature class
   // directly, it should be dealing with the Feature interface.
   enum Location {
     UNSPECIFIED_LOCATION,
     COMPONENT_LOCATION,
     POLICY_LOCATION,
   };
 
   // Accessors defined for testing. See comment above about not directly using
   // SimpleFeature in production code.
+  std::set<std::string>* blacklist() { return &blacklist_; }
+  std::set<std::string>* whitelist() { return &whitelist_; }
+  std::set<Manifest::Type>* extension_types() { return &extension_types_; }
+  std::set<Context>* contexts() { return &contexts_; }
   Location location() const { return location_; }
   void set_location(Location location) { location_ = location; }
   int min_manifest_version() const { return min_manifest_version_; }
   void set_min_manifest_version(int min_manifest_version) {
     min_manifest_version_ = min_manifest_version;
   }
   int max_manifest_version() const { return max_manifest_version_; }
   void set_max_manifest_version(int max_manifest_version) {
     max_manifest_version_ = max_manifest_version;
   }
-
-  std::set<std::string>* blacklist() { return &blacklist_; }
-  std::set<std::string>* whitelist() { return &whitelist_; }
-  std::set<Manifest::Type>* extension_types() { return &extension_types_; }
-  std::set<Context>* contexts() { return &contexts_; }
+  const std::string& command_line_switch() const {
+    return command_line_switch_;
+  }
+  void set_command_line_switch(const std::string& command_line_switch) {
+    command_line_switch_ = command_line_switch;
+  }
 
   // Dependency resolution is a property of Features that is preferrably
   // handled internally to avoid temptation, but FeatureFilters may need
   // to know if there are any at all.
   bool HasDependencies();
 
   // Adds a filter to this feature. The feature takes ownership of the filter.
   void AddFilter(scoped_ptr<SimpleFeatureFilter> filter);
 
   // Parses the JSON representation of a feature into the fields of this object.
@@ skipping 65 matching lines @@
   std::set<std::string> blacklist_;
   std::set<std::string> whitelist_;
   std::set<std::string> dependencies_;
   std::set<Manifest::Type> extension_types_;
   std::set<Context> contexts_;
   URLPatternSet matches_;
   Location location_;
   std::set<Platform> platforms_;
   int min_manifest_version_;
   int max_manifest_version_;
-  bool has_parent_;
   bool component_extensions_auto_granted_;
+  std::string command_line_switch_;
 
   typedef std::vector<linked_ptr<SimpleFeatureFilter> > FilterList;
   FilterList filters_;
 
   DISALLOW_COPY_AND_ASSIGN(SimpleFeature);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_H_