"Fix" remaining connection error handlers in Blink

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

 // Copyright 2016 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 "modules/notifications/NotificationManager.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "modules/notifications/Notification.h"
 #include "modules/notifications/NotificationPermissionCallback.h"
@@ skipping 86 matching lines @@
     NotificationPermissionCallback* deprecatedCallback,
     mojom::blink::PermissionStatus status) {
   String statusString = Notification::permissionString(status);
   if (deprecatedCallback)
     deprecatedCallback->handleEvent(statusString);
 
   resolver->resolve(statusString);
 }
 
 void NotificationManager::onPermissionServiceConnectionError() {
+  if (!Platform::current()) {
+    // TODO(rockot): Clean this up once renderer shutdown sequence is fixed.
+    return;
+  }
   m_permissionService.reset();
 }
 
 DEFINE_TRACE(NotificationManager) {
   ContextLifecycleObserver::trace(visitor);
   Supplement<ExecutionContext>::trace(visitor);
 }
 
 }  // namespace blink