DevTools: remove PerformanceMonitor::HandlerCall, migrate to the new scoped probes.

third_party/WebKit/Source/core/events/EventTarget.cpp

Index: third_party/WebKit/Source/core/events/EventTarget.cpp
diff --git a/third_party/WebKit/Source/core/events/EventTarget.cpp b/third_party/WebKit/Source/core/events/EventTarget.cpp
index d9c66ba8db318832da42792cf6c5b8ba62646402..edce17336f69008ff24ddaaf9b021b0220cb1b54 100644
--- a/third_party/WebKit/Source/core/events/EventTarget.cpp
+++ b/third_party/WebKit/Source/core/events/EventTarget.cpp
@@ -704,7 +704,7 @@ bool EventTarget::fireEventListeners(Event* event,
     bool passiveForced = registeredListener.passiveForcedForDocumentTarget();
 
     probe::NativeBreakpoint nativeBreakpoint(context, this, event);
-    PerformanceMonitor::HandlerCall handlerCall(context, event->type(), false);
+    probe::UserCallback probe(context, "", event->type(), false);
 
     // To match Mozilla, the AT_TARGET phase fires both capturing and bubbling
     // event listeners, even though that violates some versions of the DOM spec.