Declarative rules should be removed on uninstalling, not unloading

chrome/browser/extensions/api/declarative/rules_registry.h

Index: chrome/browser/extensions/api/declarative/rules_registry.h
diff --git a/chrome/browser/extensions/api/declarative/rules_registry.h b/chrome/browser/extensions/api/declarative/rules_registry.h
index a4ef26b44a8068f4d447908c5e552d279cf41d65..59000b2071792b59cb2896d83fb4d9c6988cc263 100644
--- a/chrome/browser/extensions/api/declarative/rules_registry.h
+++ b/chrome/browser/extensions/api/declarative/rules_registry.h
@@ -120,9 +120,11 @@ class RulesRegistry : public base::RefCountedThreadSafe<RulesRegistry> {
   void GetAllRules(const std::string& extension_id,
                    std::vector<linked_ptr<RulesRegistry::Rule> >* out);
 
-  // Called to notify the RulesRegistry that an extension has been unloaded
-  // and all rules of this extension need to be removed.
+  // Called to notify the RulesRegistry that the extension availability has
+  // changed, so that the registry can update which rules are active.
   void OnExtensionUnloaded(const std::string& extension_id);
+  void OnExtensionUninstalled(const std::string& extension_id);
+  void OnExtensionLoaded(const std::string& extension_id);
 
   // Returns the number of entries in used_rule_identifiers_ for leak detection.
   // Every ExtensionId counts as one entry, even if it contains no rules.