Remove ENABLE_MESSAGE_CENTER

chrome/browser/extensions/api/notifications/notifications_apitest.cc

Index: chrome/browser/extensions/api/notifications/notifications_apitest.cc
diff --git a/chrome/browser/extensions/api/notifications/notifications_apitest.cc b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
index a251db9ea2b03101fbef7f7f8a5b42fc05eebbb6..600db6c56125ec4f33c1a724527dab8d1ec177a0 100644
--- a/chrome/browser/extensions/api/notifications/notifications_apitest.cc
+++ b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
@@ -274,12 +274,10 @@ IN_PROC_BROWSER_TEST_F(NotificationsApiTest, TestCSP) {
   ASSERT_TRUE(RunExtensionTest("notifications/api/csp")) << message_;
 }
 
-#ifdef ENABLE_MESSAGE_CENTER
 #if !defined(OS_WIN) || !defined(USE_ASH)
 
 IN_PROC_BROWSER_TEST_F(NotificationsApiTest, TestByUser) {
-  if (!message_center::IsRichNotificationEnabled())
-    return;
+  SKIP_THIS_TEST_IF_MESSAGE_CENTER_DISABLED();
 
   const extensions::Extension* extension =
       LoadExtensionAndWait("notifications/api/by_user");
@@ -303,4 +301,3 @@ IN_PROC_BROWSER_TEST_F(NotificationsApiTest, TestByUser) {
 }
 
 #endif
-#endif