Use ExtensionRegistryObserver instead of deprecated extension notification from c/b/e/api.

chrome/browser/extensions/api/declarative/rules_registry_service.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/browser/extensions/api/declarative/rules_registry_service.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/declarative/rules_cache_delegate.h"
 #include "chrome/browser/extensions/api/declarative_content/content_rules_registry.h"
 #include "chrome/browser/extensions/api/declarative_webrequest/webrequest_constants.h"
 #include "chrome/browser/extensions/api/declarative_webrequest/webrequest_rules_registry.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_process_host.h"
+#include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
 
 namespace extensions {
 
 namespace {
 
 // Registers |web_request_rules_registry| on the IO thread.
 void RegisterToExtensionWebRequestEventRouterOnIO(
     void* profile,
     const RulesRegistryService::WebViewKey& webview_key,
     scoped_refptr<WebRequestRulesRegistry> web_request_rules_registry) {
   ExtensionWebRequestEventRouter::GetInstance()->RegisterRulesRegistry(
       profile, webview_key, web_request_rules_registry);
 }
 
 bool IsWebView(const RulesRegistryService::WebViewKey& webview_key) {
   return webview_key.embedder_process_id && webview_key.webview_instance_id;
 }
 
 }  // namespace
 
 RulesRegistryService::RulesRegistryService(content::BrowserContext* context)
     : content_rules_registry_(NULL),
+      extension_registry_observer_(this),
       profile_(Profile::FromBrowserContext(context)) {
   if (profile_) {
-    registrar_.Add(this,
-                   chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
-                   content::Source<Profile>(profile_->GetOriginalProfile()));
+    extension_registry_observer_.Add(ExtensionRegistry::Get(profile_));
     registrar_.Add(this,
                    chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
                    content::Source<Profile>(profile_->GetOriginalProfile()));
-    registrar_.Add(this,
-                   chrome::NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
-                   content::Source<Profile>(profile_->GetOriginalProfile()));
     registrar_.Add(
         this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
         content::NotificationService::AllBrowserContextsAndSources());
     EnsureDefaultRulesRegistriesRegistered(WebViewKey(0, 0));
   }
 }
 
 RulesRegistryService::~RulesRegistryService() {}
 
 void RulesRegistryService::EnsureDefaultRulesRegistriesRegistered(
@@ skipping 132 matching lines @@
       (registry->*notification_callback)(extension_id);
     } else {
       content::BrowserThread::PostTask(
           registry->owner_thread(),
           FROM_HERE,
           base::Bind(notification_callback, registry, extension_id));
     }
   }
 }
 
+void RulesRegistryService::OnExtensionLoaded(
+    content::BrowserContext* browser_context,
+    const Extension* extension) {
+  NotifyRegistriesHelper(&RulesRegistry::OnExtensionLoaded, extension->id());
+}
+
+void RulesRegistryService::OnExtensionUnloaded(
+    content::BrowserContext* browser_context,
+    const Extension* extension,
+    UnloadedExtensionInfo::Reason reason) {
+  NotifyRegistriesHelper(&RulesRegistry::OnExtensionUnloaded, extension->id());
+}
+
 void RulesRegistryService::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   switch (type) {
-    case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
-      const Extension* extension =
-          content::Details<UnloadedExtensionInfo>(details)->extension;
-      NotifyRegistriesHelper(&RulesRegistry::OnExtensionUnloaded,
-                             extension->id());
-      break;
-    }
     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
       const Extension* extension =
           content::Details<const Extension>(details).ptr();
       NotifyRegistriesHelper(&RulesRegistry::OnExtensionUninstalled,
                              extension->id());
       break;
     }
-    case chrome::NOTIFICATION_EXTENSION_LOADED_DEPRECATED: {
-      const Extension* extension =
-          content::Details<const Extension>(details).ptr();
-      NotifyRegistriesHelper(&RulesRegistry::OnExtensionLoaded,
-                             extension->id());
-      break;
-    }
     case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: {
       content::RenderProcessHost* process =
           content::Source<content::RenderProcessHost>(source).ptr();
       RemoveWebViewRulesRegistries(process->GetID());
       break;
     }
     default:
       NOTREACHED();
       break;
   }
 }
 
 }  // namespace extensions