Bind Window focus ability to the ExecutionContext instead of the process.

Source/modules/notifications/Notification.cpp

Index: Source/modules/notifications/Notification.cpp
diff --git a/Source/modules/notifications/Notification.cpp b/Source/modules/notifications/Notification.cpp
index 02496fbe4101a022affedd034a3f6abeefd6c17c..f4f170c38b1cea671c246963a16fa16839f15b89 100644
--- a/Source/modules/notifications/Notification.cpp
+++ b/Source/modules/notifications/Notification.cpp
@@ -35,9 +35,9 @@
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
+#include "core/dom/ScopedWindowFocusAllowedIndicator.h"
 #include "core/events/Event.h"
 #include "core/frame/UseCounter.h"
-#include "core/page/WindowFocusAllowedIndicator.h"
 #include "modules/notifications/NotificationOptions.h"
 #include "modules/notifications/NotificationPermissionClient.h"
 #include "public/platform/Platform.h"
@@ -163,7 +163,7 @@ void Notification::dispatchShowEvent()
 void Notification::dispatchClickEvent()
 {
     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
-    WindowFocusAllowedIndicator windowFocusAllowed;
+    ScopedWindowFocusAllowedIndicator windowFocusAllowed(executionContext());
     dispatchEvent(Event::create(EventTypeNames::click));
 }