Revert of DevTools: do not use RAII for sync native breakpoints, reuse AsyncTask where possible.

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

Index: third_party/WebKit/Source/modules/notifications/Notification.cpp
diff --git a/third_party/WebKit/Source/modules/notifications/Notification.cpp b/third_party/WebKit/Source/modules/notifications/Notification.cpp
index 16838d9569ef756f006633ae5dbdfcbd57d4c844..930099c9ba50e0fd2bf76b03226ff9b12ceaa0ce 100644
--- a/third_party/WebKit/Source/modules/notifications/Notification.cpp
+++ b/third_party/WebKit/Source/modules/notifications/Notification.cpp
@@ -380,8 +380,8 @@
         "Only request notification permission in response to a user gesture.",
         0, nullptr);
   }
-  InspectorInstrumentation::breakIfNeeded(context,
-                                          "Notification.requestPermission");
+  InspectorInstrumentation::NativeBreakpoint nativeBreakpoint(
+      context, "Notification.requestPermission", true);
 
   return NotificationManager::from(context)->requestPermission(
       scriptState, deprecatedCallback);