Revert of Introduce the Blink NotificationService, move permission checks there

third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp

Index: third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
diff --git a/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp b/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
index 5ef92123bcadfe2bd22e9a2ef7dcf8f8dfdbc6cd..c2aafb1a1eb82875faade6f3ab7dca5ce7e27e55 100644
--- a/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
+++ b/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
@@ -11,7 +11,6 @@
 #include "modules/notifications/GetNotificationOptions.h"
 #include "modules/notifications/Notification.h"
 #include "modules/notifications/NotificationData.h"
-#include "modules/notifications/NotificationManager.h"
 #include "modules/notifications/NotificationOptions.h"
 #include "modules/notifications/NotificationResourcesLoader.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
@@ -60,7 +59,7 @@
         return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "No active registration available on the ServiceWorkerRegistration."));
 
     // If permission for notification's origin is not "granted", reject promise with a TypeError exception, and terminate these substeps.
-    if (NotificationManager::from(executionContext)->permissionStatus() != mojom::blink::PermissionStatus::GRANTED)
+    if (Notification::checkPermission(executionContext) != mojom::blink::PermissionStatus::GRANTED)
         return ScriptPromise::reject(scriptState, V8ThrowException::createTypeError(scriptState->isolate(), "No notification permission has been granted for this origin."));
 
     // Validate the developer-provided values to get a WebNotificationData object.