DevTools: instrument user callbacks based on generic probes, remove NativeBreakpoint.

third_party/WebKit/Source/core/frame/DOMTimer.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 127 matching lines @@
   DCHECK(!context->isContextSuspended());
   // Only the first execution of a multi-shot timer should get an affirmative
   // user gesture indicator.
   UserGestureIndicator gestureIndicator(std::move(m_userGestureToken));
 
   TRACE_EVENT1("devtools.timeline", "TimerFire", "data",
                InspectorTimerFireEvent::data(context, m_timeoutID));
   probe::UserCallback probe(context,
                             repeatInterval() ? "setInterval" : "setTimeout",
                             AtomicString(), true);
-  probe::AsyncTask asyncTask(context, this, "timerFired");
+  probe::AsyncTask asyncTask(context, this);
 
   // Simple case for non-one-shot timers.
   if (isActive()) {
     if (repeatInterval() && repeatInterval() < minimumInterval) {
       m_nestingLevel++;
       if (m_nestingLevel >= maxTimerNestingLevel)
         augmentRepeatInterval(minimumInterval - repeatInterval());
     }
 
     // No access to member variables after this point, it can delete the timer.
@@ skipping 30 matching lines @@
 RefPtr<WebTaskRunner> DOMTimer::timerTaskRunner() const {
   return getExecutionContext()->timers()->timerTaskRunner();
 }
 
 DEFINE_TRACE(DOMTimer) {
   visitor->trace(m_action);
   SuspendableTimer::trace(visitor);
 }
 
 }  // namespace blink