Decouple RulesCacheDelegate from RulesRegistry

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

Index: chrome/browser/extensions/api/declarative/rules_cache_delegate.h
diff --git a/chrome/browser/extensions/api/declarative/rules_cache_delegate.h b/chrome/browser/extensions/api/declarative/rules_cache_delegate.h
index c778091dfecd60d8d9a81548d09bdae8e450078b..cf942757e70dc0d8f04cae70f95bd27680ff6256 100644
--- a/chrome/browser/extensions/api/declarative/rules_cache_delegate.h
+++ b/chrome/browser/extensions/api/declarative/rules_cache_delegate.h
@@ -27,14 +27,12 @@ class RulesRegistry;
 // If |log_storage_init_delay| is set, the delay caused by loading and
 // registering rules on initialization will be logged with UMA.
 class RulesCacheDelegate : public content::NotificationObserver {
-  public:
+ public:
+
   // |event_name| identifies the JavaScript event for which rules are
   // registered. For example, for WebRequestRulesRegistry the name is
   // "declarativeWebRequest.onRequest".
-  RulesCacheDelegate(Profile* profile,
-                     const std::string& event_name,
-                     content::BrowserThread::ID rules_registry_thread,
-                     base::WeakPtr<RulesRegistry> registry,
+  RulesCacheDelegate(base::WeakPtr<RulesRegistry> registry,
                      bool log_storage_init_delay);
 
   virtual ~RulesCacheDelegate();
@@ -91,6 +89,12 @@ class RulesCacheDelegate : public content::NotificationObserver {
   void SetDeclarativeRulesStored(const std::string& extension_id,
                                  bool rules_stored);
 
+  // Deserialize the rules from the given Value object and add them to the
+  // RulesRegistry.
+  static void DeserializeAndAddRules(base::WeakPtr<RulesRegistry> registry,
+                                     const std::string& extension_id,
+                                     scoped_ptr<base::Value> rules);
+
   content::NotificationRegistrar registrar_;
 
   Profile* profile_;