Mandate unique_ptr for base::IDMap in IDMapOwnPointer mode.

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 e799a9b3ef1d117714013dc2171e406a7dc31900..207ffeb0e04ea3cb1c568c32114410abd600908d 100644
--- a/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
+++ b/third_party/WebKit/Source/modules/notifications/ServiceWorkerRegistrationNotifications.cpp
@@ -24,6 +24,7 @@
 #include "wtf/PtrUtil.h"
 #include "wtf/RefPtr.h"
 #include <memory>
+#include <utility>
 
 namespace blink {
 namespace {
@@ -120,15 +121,16 @@ ScriptPromise ServiceWorkerRegistrationNotifications::getNotifications(
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
   ScriptPromise promise = resolver->promise();
 
-  WebNotificationGetCallbacks* callbacks =
-      new CallbackPromiseAdapter<NotificationArray, void>(resolver);
+  std::unique_ptr<WebNotificationGetCallbacks> callbacks =
+      WTF::makeUnique<CallbackPromiseAdapter<NotificationArray, void>>(
+          resolver);
 
   WebNotificationManager* notificationManager =
       Platform::current()->notificationManager();
   DCHECK(notificationManager);
 
   notificationManager->getNotifications(
-      options.tag(), registration.webRegistration(), callbacks);
+      options.tag(), registration.webRegistration(), std::move(callbacks));
   return promise;
 }