Add actiivity in factory

athena/extensions/chrome/extensions_delegate_impl.cc

Index: athena/extensions/chrome/extensions_delegate_impl.cc
diff --git a/athena/extensions/chrome/extensions_delegate_impl.cc b/athena/extensions/chrome/extensions_delegate_impl.cc
index ca3646f19de6ed67849042d486e366a0bf2b7b4a..0fbb129a2decb7c58738844fbab17bd95e3dbba0 100644
--- a/athena/extensions/chrome/extensions_delegate_impl.cc
+++ b/athena/extensions/chrome/extensions_delegate_impl.cc
@@ -5,7 +5,6 @@
 #include "athena/extensions/public/extensions_delegate.h"
 
 #include "athena/activity/public/activity_factory.h"
-#include "athena/activity/public/activity_manager.h"
 #include "athena/extensions/chrome/athena_chrome_app_window_client.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
@@ -97,9 +96,8 @@ class ChromeExtensionsDelegate : public ExtensionsDelegate {
 
     DCHECK(!url_input.is_empty() || extension);
     GURL url = UrlForExtension(extension, url_input);
-    athena::ActivityManager::Get()->AddActivity(
-        athena::ActivityFactory::Get()->CreateWebActivity(
-            GetBrowserContext(), base::UTF8ToUTF16(extension->name()), url));
+    athena::ActivityFactory::Get()->CreateWebActivity(
+        GetBrowserContext(), base::UTF8ToUTF16(extension->name()), url);
   }
 
   // ExtensionService for the browser context this is created for.